Contents

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Contents
Foreword
xi
Part I The basics
1
1
Existence vs. essence
The opposition existence/essence
1.2 Essentialist and existentialist projects
1.3
and after
Essentialism vs.
Perfect vs. imperfect
2
Incompleteness
2.1 Technical statement
2.2 Hilbert in the face of incompleteness
2.3 Incompleteness is not a deficiency
2.4 Metaphorical readings
2. A More on the classification of predicates
2.B Formal arithmetic
2.C Techniques of incompleteness
2.D Incompleteness and truth
2.E Undecidability
34
36
38
3
Classical sequents: LK
3.1 Generalities
3.2 The classical calculus
3.3 The cut-free system
3.4
the Hauptsatz
3.A Around sequent calculus
3.B Semantic aspects
3.C Infinitary proof-theory
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41
43
48
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4
Intuitionistic logic: LJ, NJ
The intuitionistic sequent calculus LJ
4.2 The Hauptsatz in LJ
4.3 The natural deduction NJ
4.4 The signature in natural deduction
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70
73
75
Girard, Jean-Yves
The blind spot
cop. 2011
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digitalisiert durch
IDS Basel/Bern, im Auftrag der
Schweizerischen Nationalbibliothek
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Contents
4.B
4.C
4.D
Existence and disjunction in LJ
Natural deduction vs. sequent calculus
Around contraction
Logic programming
Kripke models
Part II Around Curry-Howard
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86
87
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91
95
5
Functional interpretations
5.1 Proofs as functions
5.2 Pure
5.3 The Curry-Howard isomorphism
Kreisel and functional interpretation
5.B Combinatory logic
5.C Other connectives
5.D
type theory
6
System F
6.1 System F
6.2 The normalisation theorem
Type theories
6.B Heyting's arithmetic
6.C
T
6.D Expressive power
Subtyping
6.F Essence, existence and typing
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126
129
129
131
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The category-theoretic interpretation
7.1 The three layers
7.2 Closed cartesian categories
7.3 Examples CCC
7.4 Logic
CCC
Classical logic
7.B Various interpretations
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140
147
150
152
154
157
7
Part III
8
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103
107
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Linear logic
Coherent spaces
8.1 Grandeur and misery of Scott domains
8.2 Coherent spaces
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164
Contents
8.3
9
Interpretation of system F
Asymmetric interpretations
vii
171
175
Linear logic
9.1 Linearity in coherent spaces
9.2 Perfect linear connectives
9.3 Imperfect connectives
9.4 The logical system
Monoidal categories
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178
182
10
Perfection vs. imperfection
10.1 Phase semantics
10.2 A perfect world?
10.3 The world is imperfect
10.A Focalisation
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197
202
208
210
11
Proof-nets
11.1 ILL
Multiplicative nets
11.3 The correctness criterion
More on multiplicatives
1
Syllogistic
General nets
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216
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233
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240
Part IV
12
13
Polarised interpretations
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249
A hypothesis: polarisation
12.1 Faithfulness of coherent spaces
A prototype
12.3 Objections to polarisation
Logic and games
12.5 Proofs and tests
12.6 Hypersequentialised logic
Classical polarity
Intuitionistic logic
12.C Hypercoherences
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254
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267
269
270
Designs and behaviours
13.1 Designs-dessins
13.2 Designs-desseins
13.3 Partial designs
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Contents
13.4
13.5
13.6
13.7
13.8
13.9
Nets and normalisation: dessins
Nets and normalisation: desseins
Analytical theorems
Introspective vs.
Behaviours
An example: the shift
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288
292
298
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304
14
Ludics: the reconstruction
14.1 Additives
14.2 Multiplicatives
14.3 Quantifiers
14.A Faithfulness
14.B Bihaviours
14.C Parsimony
14.D
(?)
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306
316
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329
15
Orthodox exponentials
15.1 The perennial perenniality
15.2 Exponential nets: normalisation
15.3 Categories and classical logic
15.4 The
LC
Exponentials and analytic functions
Exponential ludics
15.C Polarised linear logic
The
331
331
333
334
337
340
342
343
350
Part V
Iconoclasm
355
16
Heterodox exponentials
16.1 The quarrel of images
16.2 Exponentials
16.3 Russell's antinomy
16.4
16.5 Expressive power
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357
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361
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366
17
Quantum coherent spaces
17.1 Logic vs. quantum
17.2 Probabilistic coherent spaces
17.3 Quantum coherent spaces
17.4 Additives
17.5 Multiplicatives
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369
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Contents
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17.6 Discussion
17.A Initiation to
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393
Nets and duality
18.1 Duality and correctness
18.2 The original criterion
Trips and coherent spaces
18.B Non-commutative logic
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403
406
409
410
Part VI
Geometry of interaction
19
The feedback equation
19.1 Basic examples
19.2 Cut-systems
19.3 Solving the equation
19.4 The normal form
19.5 The first
Complements on operators
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417
419
421
425
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439
20
Babel Tower vs. Great Wall
20.1 Idioms
20.2 The Babel Tower
20.3
20.A Von Neumann algebras
20.B Finite algebras
20.C Hyperfinite algebras
20.D The determinant
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443
446
448
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453
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459
21
Finite
21.1 Projects
21.2 Conducts
21.3 The social life of conducts
21.4 Polarised conducts
21.5 Exponentials
21.6 Lateralised logic
21.7 The social life of behaviours
Second-order quantification
21.B Truth
Truth and intersubjectivity
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462
469
473
475
477
480
482
485
488
491
x
Contents
Envoi. The phantom of transparency
The transparent world
Logics of transparency
Semantics
From semantics to the cognitive onion
Negation
497
497
498
499
501
504
Bibliography
509
Index
517
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