24 Jul 2012

Powers of Transformation. Exponential Functions in Edwards & Penney's Calculus

Edwards & Penney's Calculus is an incredibly-impressive, comprehensive, and understandable book. I highly recommend it.

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[I your author am not a mathematician; I am merely an admirer of Edwards & Penney's wonderful calculus book. Please consult the text or other references to be certain about anything in the summary below. I mean this emphatically.]


Powers of Transformation
Exponential Functions in Edwards & Penney's Calculus



What do exponential functions got to do with you?

As we are learning how to swim, there is a whole host of powers/abilities/capacities that we are acquiring. For example, we are becoming able to enjoy swimming at the beach, to learn watersports like waterpolo or competitive swimming, to be capable of saving a drowning person, to be fit for sailing, and so on. So in a sense, becoming a swimmer does not merely add a little to our powers, but raises our powers to a whole new level of expression. Then consider if we do take up sailing. As we are becoming a sailor, we then are rising to yet another even higher level; for, we can move great distances on the water, compete in races, have new experiences out at sea, and so forth. If we continue through a sequence of changes in which one increased power raises us up to a far greater level from which we can yet rise yet remarkably further, this is something like growing exponentially. Each increase gives us more powers. But also, each increase gives us more power to increase. So one way we might understand our continuous changing is that we go through a series of states. But maybe we can also judge the changes that we go through and that we put ourselves through on the basis of how they increase our ability to increase our abilities. Who we are changes over time, but there is a sort of 'constant', which is our constantly changing in power.


Brief Summary

In an exponential function, a constant base is raised to a variable power.


Points Relative to Deleuze

Our series of self-transformations is for Deleuze and Orson Welles like a series of forgers or fakes of oneself, yet these are self-creative forgeries or fakeries. Each such self-forgery is like an exponential power increase:

It is Welles who, beginning with The Lady from Shanghai, imposes one single character, the forger. But the forger exists only in series of forges who are his metamorphoses, because the power itself exists only in the form of a series of powers which are its exponents. (Deleuze, Cinema 2, 140b)

Summary of
Edwards & Penney
Calculus

Chapter 1: Functions, Graphs, and Models
Section 1.4: Transcendental Functions

Subsection 3: Exponential Functions


Before examining exponential functions, we first will review power functions for contrast. In both cases of power functions and exponential functions, we speak of their 'form', which means we give explicit formulation to the categories of its component parts and of their relations. The form that power functions takes is

f (x) = xk (where k is a constant)

So in some specific case of a power function, the base is a variable that can take on one from a range of values, while the exponent is specified as some given numerical value.

Exponential functions, however, take this form:

f(x) = ax

We see that in exponential functions, the base is given as a constant, while the exponent is a variable that may take-on one of a range of values. Edwards and Penney write that in the case of power functions, the variable is raised to a constant power, while in exponential functions, a constant is raised to a variable power. (37c)

Below is a graph (made with geogebra) resembling the diagram in Edwards & Penney, and showing exponential functions y = 2x (blue) and y = 10x (red).


Example 6

Consider exponential functions when they have a base that is greater than one (base a > 1). Its value increases quite rapidly when the exponent x is large. Power functions, however, grow more slowly as x increases.


Edwards and Penney then have us consider smaller values for x2 and 2x. Seeing where their graphs overlap tell us the solutions to the equation x2 = 2x.


They also have us consider when the exponent in the exponential function is negative. The graphs for such functions fall from left to right.

The authors then compare the purposes of trigonometric and exponential functions. We use trigonometric functions to describe "periodic phenomena of ebb and flow;" however, we use exponential functions to describe "natural processes of steady growth or steady decline." (p38bc)


from Edwards & Penney: Calculus. New Jersey: Prentice Hall, 2002, pp.37-38.

Deleuze, Gilles. Cinema 2: The Time Image. Transl. Hugh Tomlinson and Robert Galeta. London & New York: 1989.

4 Jul 2012

Kneading Friendship: Deleuze, Blanchot, and the Folding of Disciplines

by Corry Shores
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The following is Julie Van der Wielen's and my presentation at the Deleuze, Philosophy, Transdisciplinarity conference at Goldsmiths College, University of London in February of 2012. Thank you Masa Kosugi, Guillaume Collett, and Chryssa Sdrolia for all your help and for organizing the wonderful conference.


Julie Van der WielenCorry Shores

Kneading Friendship:Deleuze, Blanchot, and the Folding of Disciplines


[Corry Shores reads:]

We would like now to explain Deleuze’s appreciation for Blanchot’s idea that friendship is the condition for thought, and as well, how for both of them, friendship is as well philosophy’s path to transdisciplinarity.


[Julie Van Der Wielen reads:]


Friendship

When you have a friend who tries to get to close to you, or you try to get to close to a friend, either by trying to be the same or by trying to know his deepest thoughts, it will get uncomfortable. Also, we are all aware of the fact that it’s wrong to dispose of knowledge we have from a friend and to talk about the friend when this one is absent. Distance is needed, even between the closest friends. In his reflections about friendship, Blanchot takes the distance between friends as a necessary condition for their relation.

Because the other is irreducibly other and I am inevitably separated from him, a kind of collision takes place between me and the other wherein I’m confronted to a limit: I’m radically different from the other, I can’t posses him and even the possibility of really understanding the other person is questionable. This distance between me and the other, our being radically separated from each other is the precondition for a relation between us. The distance as an interval, an interruption of being or as a no man’s land, is where friendship takes place. In this openness of the interval the other is present and nearby, but this proximity hides and affirms the other as very far-off and belonging to no one. What I see of my friend when I talk to him, when I decipher his gestures or silence is an openness to his thought, nevertheless I will never really access this distant thought. Even in the closest moments, the infinite distance between friends remains.

This is why, in the last chapter of l’Amitie, Blanchot writes on the impossibility to write about his friend Georges Bataille. He doesn’t accept to write on Bataille’s character or on his thoughts because with his death, their relation as separation disappeared and all that is left are memories of that of Bataille which was close to people, not the distant reality where this proximity was the affirmation of. Without the presence of the friend, there is no possible openness to him and his thought. My relation with my friend preserves the openness to his thought. As the presence of my friend and our relation are a condition for me to find a possible openness to him, any grasp on him is out of the question, if without a relation or dialogue with him. Our relation follows an unpredictable course, where presence and dialogue are necessary to openness. For this reason I cannot know univocally who my friend is, and he will always be infinitely far from me. I can only find openness to his thought when we are present to each other, in an unpredictable movement of understanding which makes it impossible for me to get hold on him.

Another name Blanchot gives to the interval between friends, rising from the unpredictability of the other and his absolute strangeness, is discretion. This is not just the outright refusal to make assertions about the friend, or to dispose of knowledge I have of him, it is the pure interval as everything that is between us. The discretion doesn’t prevent communication, it links us up in difference, making communication possible through speech or silence. The interval or discretion is a necessary condition to communication. Real communication implies the acknowledgement of its limit, the distance between two parties. This limit shows it is impossible to talk about my friend but only to talk to him. It is an impossibility which opens up infinite possibility: impossibility of understanding by which we are driven to create new meaning, radical difference that pulls together.

We can see the interval operate in speech: talking together is never actually talking at the same time. Speech goes from one to the other, the talkers take turns. The impossibility to talk together opens up to the possibility of a dialogue. This dialogue follows an unpredictable course since there is always the possibility of contradiction, development or affirmation of my thought by the friend. The impossibility to predict the course of the conversation is a necessary condition to communication.

In a dialogue with a friend I should never claim comprehension of my friend or of fixed meaning. Communication and the relation with my friend is an unpredictable movement rising from the impossibility to get hold on the other. When Blanchot claims friendship is a necessary condition to thought, we should look at it this way: thought should be openness without pretention of fixed meaning, as in friendship communication should be a dialogue with the other as an unpredictable movement. In the Abecedaire, Deleuze paraphrases Blanchot saying friendship is a condition for thought, not because we need friends to think but because the category of friendship is a condition for the exercise of thought.


[Corry Shores reads:]

We also find Deleuze offering a strikingly similar account of friendship. Consider first his example of comedic friends, Laurel and Hardy.


Their cartoonish contrasts suggests they would regard one another as though from a great distance. One is fat, the other skinny; one more extroverted, the other more introverted. Yet, they always seem to be in communion with one another, despite their features that might normally push them apart. It is as if they are constantly together in communication. Even when one is physically distant from the other, we still never sense that there is a break in that continued communicative link that holds them together. But, what about when they seem to miscommunicate, like when Hardy says he is waiting for a streetcar, as if charmed rather than enraged by Laurel’s feigned innocence? Despite the disconnection and absurdity of their messages to one another, they do not break their constant bond of communicative contact.

Is it not as though they share a unique language that makes sense only to them? Would we really be surprised if Laurel and Hardy spent a whole day together without ever saying even one word, while the whole time, still conducting a sort of unspoken dialogue that unfolds without any need for conventional signs?


For Deleuze, our friendships form not on the basis of our explicit messages to one another, but rather on a more profound sort of reading of one another’s implicit and even inexplicable expressions to one another, or what Deleuze here calls signs.

Yet they are not signs in the sense of representations; they instead form a sort of prelanguage. But how are they read, if it is not by means of explicit interpretations? One reason is that they are sensed affectively. Friends are charmed by these implicit messages that reveal something slightly less than sane about the other, something that would only lose its meaning if it were clearly stated. These mutually-affective charming signs pull friends together even though there remains between them something mysterious and unspoken, something that might normally make people feel a distance to one another. And yet, it is not like a secret code that both can decipher. Friends do not share common ideas. They do not necessarily know what the other means, although they still know that they are saying something meaningful to one another.

Deleuze even discusses his own friendships to further illustrate. When he and his hypo-chondriac friend-converse, there might seem to be an absurd disconnect between what they say to one another. For example, if Deleuze asks him how he is doing, his friend replies “like a cork tossed by the sea.” But with Guattari, they may both just simply observe to one another that they have the same brand of hat. In the first case of communication, their explicit meanings did not need to cleanly match for them to read their deeper inexplicable signs. Yet, in the second case of noticing the same hats, it seems they say nothing important at all to one another; but nonetheless, something more profound transpired between them.

Now, to understand why Deleuze appreciates Blanchot’s point that friendship is the condition for thought, we will turn to Deleuze’s discussion of neurophysiology. What we will then suggest is that a friendship of disciplines happens not when they completely understand one another, but when they like friends are sensitive to each other’s inexplicable and charming signs.

We make this connection, because Deleuze talks in similar terms when discussing the brain activity at work in our thinking.

[Clips should be played and viewed simultaneously, if possible]



The brain’s production of ideas is a bit like the activities in a pinball machine. Neural electrical events often occur randomly, indeterminately, and probabilistically. Also, there are both continuous and discontinuous communications between neural circuits. Deleuze notes how very distant neurons can make a ‘jump’ over their gap in this probabilistic scheme.




To further illustrate, he describes a mathematical concept called the baker’s transformation. It gets its name from the procedure that bakers perform when kneading bread dough. They stretch it, which makes it flatter. Then they fold it back upon itself, which returns it to its thicker form. Here first is Deleuze showing the transformative motions with his hands.


bakers transformation animation
(Animation above is my own, made with OpenOffice Draw and Unfreeze)

Likewise, in the Baker’s Transformation, a square is stretched and then folded back upon itself. This animation shows the geometrical rendition of the transformation.

bakers transformation deleuze intensity depth animation
(Animation above is my own, made with OpenOffice Draw and Unfreeze)

What Deleuze observes is how distant points will come together after some number of transformations.

Deleuze uses this example not only to illustrate neuro-biological activity during thinking, but also how he was able to connect ideas between disciplines that he had no training or background in. These illustrations might remind us of how friends communicate without knowing explicitly each other’s meanings. On the basis of charming signs that Deleuze detects in various disciplines, he is able to cross these disparate fields in order to understand ideas that connect them, even without him having the expertise normally needed for uncovering these concepts. He offers two examples.








Michelson Morely Experiment Animation for Bergson's Duration and Simultaneity
(Animation above is my own, made with OpenOffice Draw and Unfreeze)

Delaunay image credits, in order
(Thanks spenceralley)
(Thanks leninimports)
(Thanks keepingupwithmyjoneses)
(Thanks joearevaloadam)
(Thanks 1artclub)

In one, he comes to understand an aspect of relativity theory through painting. He wanted to conceptualize regarding the Michelson experiment the way that a light beam expresses a form that is independent of the geometrical structure of the channel that the light beam moves through. In this moving diagram above, we observe the independent diagonal path that the vertical beam traverses, were it seen from an immobile point of reference.

Deleuze arrived at this concept not by working through the mathematics, but instead when he conjoined this scientific expression of the concept with the artistic one of Delaunay, who paints not the geometrical forms that the light shines on, but rather, he paints light itself as independently expressing forms in its own way. His other example is the way he came to understand Riemann space. He needed to grasp how each point is like a joint that varies the space in a non-predetermined way. He obtained this concept by juxtaposing the mathematical expression of this concept with these scenes in Bresson’s Pickpocket.


Deleuze further accounts how mathematicians tell him after reading the details of his mathematical writings that it fits together within what they know in their more specialized way, even though they and Deleuze would probably misunderstand each other in an intellectual conversation. He as well had such resonances with artists. In fact, Deleuze explains the importance also for philosophers to have a non-specialized reading of other philosophers, as if a philosopher for example would read Spinoza the way a merchant would.

For philosophical concepts to form, Deleuze explains, we need as well to have a non-philosophical reading of philosophical texts. So in this way, philosophers should alsoin a sense befriend other philosophers, as well as other non-philosophers, by dwelling below one other’s specialized terminology to instead produce concepts through non-representational communication.


[Julie Van der Wielen reads:]

Philosophy as friendship

Like Deleuze, Blanchot thinks friendship is a condition for thought. Philosophy should proceed in dialogue with the other, otherwise it strangles itself. Nothing is left then but thought thinking itself, scraping concepts until they’re empty. Blanchot himself oscillates between philosophy and literature, saying they’re both open to one another. He believes philosophy needs to be talked to from the outside, staying at her side we have to talk to her from outside, making a dialogue possible. As thought, philosophy needs to be in dialogue with a distant other in order to continue her unpredictable discourse.



Image credits

Delaunay

http://spenceralley.blogspot.com/2011/12/sonia-delaunay-again.html


http://joearevaloadam.blogspot.com/2009/08/robert-delaunay-1885-1941-hommage.htm

http://www.leninimports.com/robert_delaunay.html


http://keepingupwithmyjoneses.blogspot.com/2011/08/explore-art-projects-robert-delaunay.html

http://www.1artclub.com/tall-portuguese-woman-by-robert-delaunay/

Difference & Sensation: Deleuze's Spinozistic Affect


by Corry Shores
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The following is my presentation at the Nederlands Genootschap voor Esthetica (Dutch Association of Aesthetics) Utrecht Expertmeeting Kunstfilosofie in Utrecht, November 2011


Corry Shores

Difference & Sensation:
Deleuze's Spinozistic Affect



Photobucket
(Animation above is my own, made with GIMP and Unfreeze,
image from Spinoza, Opera vol. 2, archive.org
, p.233)

Deleuze is commonly considered an anti-phenomenologist. However, I would like to explore the phenomenological value of his aesthetical ideas regarding affection and bodily sensation. The aim of this presentation is to offer a Spinozistic interpretation of certain concepts in Deleuze’s Francis Bacon book. For this aim, I draw primarily upon Deleuze’s writings on Spinoza’s affection. We will regard affection phenomenologically as involving a sort of affective awareness of bodily-given phenomena. We do this because Deleuze explains Spinoza’s kinds of knowledge in terms of the rhythm of affection.

Deleuze specifically refers to affective awareness as ‘the phenomenon of passage.’ It is the lived transition that we undergo when affections transfer us from one bodily state to another.


There are two primary dimensions, then, to such affective alterations.

One is the physical composition of bodies that becomes changed by the affection. The other is the dynamic of the alteration. Deleuze combines these two dimensions of affection, the compositional and the dynamic, by analyzing two sorts of infinities in Spinoza’s theory of affection, namely, extensive and intensive infinities. There is a cryptic diagram in Spinoza’s Twelfth Letter: the ‘letter on infinity.’ Deleuze’s novel interpretation of the diagram shows how it illustrates the two infinities.


Spinoza writes of the diagram that “all the inequalities of the space lying between the two circles ABCD in the diagram exceed any number, as do all the variations of the speed of matter moving through that area.”


We find similar diagrams in Spinoza’s Principles of Cartesian Philosophy. In the left diagram, both semi-circles share the same center. The space between their circumferences is everywhere the same. However, if the semi-circles do not share the same center, then the space between their circumferences will be everywhere unequal.


He also has us consider the circulation of water moving through the space between offset circles. And on account of the geometry of the non-concentric circles, every place along the circuit has a different width and hence “the fluid body that moves through the tube ABC receives an indefinite number of degrees of speed.”

The infinity diagram would then seem to be a hybrid of these two other figures.


Yet, Spinoza explains in his 81st letter that the infinity here is not obtained from the fact that there are more parts than can be counted. Instead, the diagram according to Deleuze, illustrates a mode’s infinite division into differential relations between infinitely small partitions.

Now, although Spinoza’s ‘letter on the infinite’ predates the inception of differential calculus, Deleuze locates in it what he considers to be seminal calculus notions. To explain the concept of infinitely small vanishing values, Deleuze guides us through the remarkably simple and illuminating visualization in one of Leibniz’ letters.


The diagonal line moves to the right, which diminishes the top triangle, all while increasing the bottom one; yet, because the triangles stay proportionally similar throughout the alteration, the ratio between the smaller one’s legs always remains proportional to the ratio between the larger one’s legs.


Photobucket
(Animation above is my own, made with OpenOffice Draw and Unfreeze)

The vanished triangle, Deleuze says, is not actually there, but is there “virtually,” because the vanishing lines have not yet entirely merged together at the corner. So the infinitely small legs of the smaller triangle are still distinct from each other and from the corner they are collapsing upon; and yet, they also do not extend beyond it. Thus, they do not bear extensive magnitudes but rather only intensive ones, which we will treat as degrees of variation. The philosophical idea here – difference without terms – is essential to Deleuze’s Spinozistic notion of affection. And it will allow us to see how Deleuze can use Spinoza’s diagram to illustrate both the intensive and extensive infinities that are involved in affection.

Photobucket
(Thanks en.wikipedia.org/ A.Greg)

Extensive bodies, for Spinoza, are divisible until reaching what he calls simplest bodies. Simplest bodies form compounds when ones moving at the same or at different speeds maintain a fixed relation in their mutual motions and when “the laws or nature of one part adapts itself to the laws or nature of another part in such wise that there is the least possible opposition between them.”

These infinitely small simplest bodies are never found alone, but rather only in infinite sets. These sets reciprocally unite with other infinite sets to compose a more complex body. These compound bodies are then combined with other bodies, and so on to higher orders until reaching the whole of Nature.

Photobucket
pulsing blue balls animated gif
heart cell beating
circulatory system pulsing beating pumping animated gif
circulatory system animation
Egypt protest bridge animated gif
amazon river animated gif
earth from space animated gif
solar system gif
spiral galaxy animated gif
galaxies animated gif


(Credits in order)
(colliding particles: Thanks A.Greg / en.wikipedia.org)
(blue molecule: Thanks M.L. Rahman / faculty.bracu.ac.bd)
(heart cell: Thanks Bluegrass Pundit / scinewsblog)
(heart beating: Thanks Sterile Barrier Solutions / sbsmed.net)
(circulatory system: Thanks John U / quietmoment.org)
(Egypt bridge protest: Thanks Freemanfilmsuk / youtube.com)
(Amazon river: Thanks BestofAttenborough /youtube.com)
(earth: Thanks UweTube / youtube.com)
(solar system: Thanks animated-sun.weebly.com)
(spiral galaxy: Thanks Kanal von beltoforion1 /youtube.com)
(galaxies: Thanks BrainMind.com / youtube.com)

In his letter on blood, Spinoza has his correspondent imagine a tiny worm so small that it can swim through the blood and observe how its tiniest particles collide and communicate their motion. The worm would see that the simple bodies of blood, the lymph and chyle, continually affect one another’s speeds. Yet, because they maintain their mutual affections without one destroying the other, they together make up the composite body that is our blood. The ratio of their speeds is a level of power that must stay within certain limits.


For otherwise, the simple bodies could decompose and enter into other relations. This happens, for example, when arsenic enters the blood. They will not combine. Rather, on account of their incompatible levels of power, arsenic will decompose our blood.

This sends a chain reaction of affective shockwaves throughout the body, decomposing all the other higher orders of differentially related parts. If it decreases our whole body’s power below a certain threshold, we die. Our body no longer expresses our modal essence, but instead its rearranged parts express the essences of other modes, such as the worms and soil we recompose into.

Thus, Deleuze interprets the infinity diagram as showing how a finite body extending between the limits of its size is divisible into an infinity of simplest bodies.

Photobucket
(Animation above is my own, made with GIMP and Unfreeze,
image from Spinoza, Opera vol. 2, archive.org, p.233)


Now to understand intensive infinities, first consider a ball on a chain swung in a circle. There are competing forces acting on the ball: on the one hand, it wants to fly outward, but on the other hand, its chain pulls it inward. As a result, the ball is always tending to go some certain way at each moment in its circular motion. If we were to cut the ball loose, it would not fly-off in a spiral, but instead outward in a straight line. This would also be the tangent to a circle’s curve at that point.
Photobucket
(Animation above is my own, made with OpenOffice Draw and Unfreeze)

The tangent on curves is like a tendency in the line’s change of direction at that place that is only implied in the movement. Physicists use techniques to find the instantaneous velocity of a moving object; it is something like the speed it is tending to go at that moment.


But how can a velocity be instantaneous? Well, nonetheless, it is a real quantity in the physical world, although it exists only as a virtuality.

Now, for a curve moving in a somewhat more irregular path, finding its tendency-toward-change is more complex, and here is where we might use Leibniz’ method.

Photobucket
(Animation above is my own, made with OpenOffice Draw and Unfreeze)

Photobucket
(Thanks Dr. Siddique / faculty.uncfsu.edu)

Sometimes we can almost feel where a certain part of the curve is heading just by judging its pattern of change. We can also create a triangle showing how the curve’s dimensions extend in a certain region. Then, like with Leibniz’ triangles, we slowly diminish the two triangle legs, and the third diagonal side gives us the tangent, which also tells us which way the curve is tending at that place.

Now, when sets of simplest bodies affectively impact the parts of our own bodies, their shocking collision corresponds with the production of an idea of that object in our imagination. “I look at the sun,” says Deleuze, “and the sun little-by-little disappears and I find myself in the dark of night; it is thus a series of successions, of coexistences of ideas, successions of ideas.” These ideas also correspond to an increase or decrease in our power of acting, and the variations are continuous.

He has us imagine that we encounter on the street our enemy Peter who makes us afraid. Yet, we suddenly turn our glance toward our friend Paul, whose charm reassures us. While moving from the ideas of Peter to Paul, we underwent a continuous increase in our power of action. These variations, Deleuze explains, are ever-altering quantities: “In other words, there is a continuous variation in the form of an increase-diminution-increase-diminution of the power of acting or the force of existing of someone according to the ideas which she has,” and “this kind of melodic line of continuous variation will define affect.”

In the 22nd letter, we find “nothing else pertains to an essence than that which it possesses at the moment it is perceived.” Deleuze reinterprets this as, “there belongs to an essence only the present, instantaneous affection that it experiences.” Deleuze offers an example of this instantaneity of an affective alteration.


We are meditating in a dark room. Then without warning, someone enters the room and abruptly turns on the lights, which completely dazzles us and renders us no longer able to maintain mental focus.

We pass between two very different states in a “lightning fast” alteration: “Two successive affections, in cuts. The passage is the lived transition from one to the other.” Every passage between affections is then necessarily an increase of power or a decrease of power. So if instead we are looking for our glasses in the complete dark, and then someone turns on a dim light, we appreciate him, because then the light increased our power of action. What we note here especially is that the affection’s increase or decrease is seen as instantaneous, which means it does not extend in time. Rather, it is an intensity.

Hence Deleuze’s other illustrative use of the diagram. A body has a certain range of affective power, and when an affection takes it beyond its limits, the body’s parts decompose into other bodies, like when arsenic enters the blood. So consider how there is a largest and smallest limit in the diagram, and throughout it is a continuum of an infinity of differential variations. Deleuze has us conceive this range of variation as representing the range of affective power that we can sustain before we decompose. So this is the intensive infinity.

Photobucket
(Animation above is my own, made with GIMP and Unfreeze,
image from Spinoza, Opera vol. 2, archive.org, p.233)


Now, according to Deleuze, we obtain Spinoza’s second kind of knowledge through our interactive contact with affecting bodies. As we saw with arsenic, the affections of other bodies can decompose us. Yet, in many cases when we are threatened by certain affections, we might know how to modify our own bodies so that we may sustain ourselves.

Deleuze cites an example in Dante’s Inferno. A damned soul is pelted with rain. Yet, rather than let the rain destroy him, he continually modifies the relations of his own body’s parts by twisting around, so that he may co-sustain with the rain’s affections. By making changes in the relations of our body-parts, we send waves of affective alteration throughout us on the level of our simplest bodies.


These internal self-affective shock-waves are in a dance of sorts with the external waves of affection, and their perpetuated interaction is what Deleuze here calls “rhythm.” Another example he offers is swimming. While in the water, a wave draws near us. When it strikes, we and the wave affect each other’s simplest-body arrangements. In that very instant we might be learning how to adjust to the wave’s decompositional forces. By modifying our own body’s composition, we may stay afloat and swim in conjunction with the wave, causing our body and the wave to become a compound, a larger body.

Another illustration better expresses how the rhythm of affection is a matter of differential relations. Deleuze explains that a violin and a piano playing independently do not really produce affective rhythm. However, they may achieve a rhythmic relationship during a joint performance if the violin plays in response to the piano all while simultaneously the piano performs in response to the violin. In this way, they each affectively modify one another while at the same time they modify themselves, which sustains their dual improvisation. And according to Deleuze, Cézanne also describes this rhythmic interaction when he wrote about “how to compose the canvas-easel relation with the relation of wind, and how to compose the relation of the easel with the sinking sun, and how to end up in such a way that I might paint on the ground, that I might paint lying on the ground.”

This portrayal of Spinoza’s affection will now serve to interpret some difficult terminology in Deleuze’s Francis Bacon book. Deleuze writes here that in simple sensations, rhythm “appears as the vibration that flows through the body without organs, it is the vector of the sensation, it is what makes the sensation pass from one level to another.”


The vector here is like the intensity of the affective variation to change its quantitative value. We could then conceive the body without organs as the Spinozistic body composed of continually altering differential relations. Hence, Deleuze writes that the body without organs is “an intense and intensive body. It is traversed by a wave that traces levels or thresholds in the body according to the variations of its amplitude. Thus the body does not have organs, but thresholds or levels.” As the damned soul in Dante’s Inferno twists his once protected side toward the pelting rain, waves of affective variation now impact the newly exposed part directly. It then becomes the site of sensation, where the internal waves of self-affection meet the external waves of affective variation. Yet this status is temporary, because he continually twists in the rain, making instead other parts of his body the new sites of affective reception.

Deleuze continues: “When the [internal] wave encounters external forces at a particular level, a sensation appears. An organ will be determined by this encounter, but it is a provisional organ that endures only as long as the passage of the wave and the action of the force, and which will be displaced in order to be posited elsewhere.” Sensational rhythm, Deleuze explains, can be the unpredictable variance of intensity waves that continually alters our bodily composition.

Thus Deleuze’s body without organs and its waves of sensational intensity can be viewed in light of his conception of the Spinozistic body and its continuous variations of affection, with the concept of ‘rhythm’ playing a similar role in both cases.

This provides us with a more substantial explanation for one of Deleuze’s few attacks on traditional phenomenology, in this case regarding the body without organs in contrast to the phenomenological lived body.

He writes: "this rhythmic unity of the senses can be discovered only by going beyond the organism. The phenomenological hypothesis is perhaps insufficient because it merely invokes the lived body. But the lived body is still a paltry thing in. We can seek the unity of rhythm only at the point where rhythm itself plunges into chaos, into the night, at the point where the differences of level are perpetually and violently mixed. Beyond the organism, but also at the limit of the lived body, there lies […] the body without organs."


Thus, Deleuze breaks from traditional phenomenology’s manner of conceiving the composition of the body as being made of harmoniously integrated parts that work organically with each other and with the world around them during phenomenal experiences. Nothing in its environment would stand out and appear to such a body that is completely accustomed to all the affective influences around it. Rather, for phenomena to appear to us, our bodies would need to sense things that stand out; we would need to detect differences.

A Deleuze-inspired phenomenology would explain bodily-given phenomena that appear to our affective awareness as being based on differential relations within us, throughout the phenomenal world around us, and between our bodies and the world.


Image credits:

Blue and red particles in motion
http://en.wikipedia.org/wiki/File:Translational_motion.gif
Thanks A.Greg

Blue molecule in motion
http://faculty.bracu.ac.bd/~mlrahman/Research.html
Thanks M.L. Rahman

Heart cell
http://scinewsblog.blogspot.com/2011/04/scientists-turn-blood-cells-into.html
Thanks Bluegrass Pundit

Heart beating
http://sbsmed.net/
Thanks Sterile Barrier Solutions

Circulatory system animated gif
http://www.quietmoment.org/my_weblog/2011/03/mysteries-of-the-human-body.html
Thanks John U.

Egypt protestors on a bridge
http://www.youtube.com/watch?v=rXbRdumboZ0
Thanks Freemanfilmsuk

Amazon river
http://www.youtube.com/watch?v=dn53PtW0AnA
Thanks BestofAttenborough

Earth
http://www.youtube.com/watch?v=hALtHnu4WEo
Thanks UweTube

Solar system
http://animated-sun.weebly.com/animated-solar-system.html
Thanks animated-sun.weebly

Spiral Galaxy
http://www.youtube.com/watch?v=AD9OV1Zrs4I
Thanks Kanal von beltoforion1

Galaxies
http://www.youtube.com/watch?v=X5zVlEywGZg
Thanks BrainMind.com

Spinoza. Opera, vol. 2. Edited by Carl Gebhardt. Heidelberg: Winter, 1972.
http://archive.org/details/operaquotquotre00landgoog

Geometrical Derivative animation:
http://faculty.uncfsu.edu/msiddiqu/Maple_Animations.htm
http://faculty.uncfsu.edu/msiddiqu/images/images/Gif_Folder/Definition%20of%20Derivative18.gif
Thanks Dr. Siddique of Fayetteville State University