Combining Texts
Ideas for
'Unconscious Cerebral Initiative', 'Intensional Logic' and 'Tractatus Logico-Philosophicus'
expand these ideas
|
start again
|
choose
another area for these texts
display all the ideas for this combination of texts
22 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
23502
|
Logic fills the world, to its limits [Wittgenstein]
|
23504
|
Logic concerns everything that is subject to law; the rest is accident [Wittgenstein]
|
5. Theory of Logic / A. Overview of Logic / 3. Value of Logic
6428
|
Wittgenstein is right that logic is just tautologies [Wittgenstein, by Russell]
|
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
11062
|
Logic is a priori because it is impossible to think illogically [Wittgenstein]
|
5. Theory of Logic / A. Overview of Logic / 8. Logic of Mathematics
11026
|
Classical logic is deliberately extensional, in order to model mathematics [Fitting]
|
5. Theory of Logic / B. Logical Consequence / 3. Deductive Consequence |-
18277
|
If q implies p, that is justified by q and p, not by some 'laws' of inference [Wittgenstein]
|
5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic
18162
|
The propositions of logic are analytic tautologies [Wittgenstein]
|
5. Theory of Logic / C. Ontology of Logic / 2. Platonism in Logic
7537
|
Wittgenstein convinced Russell that logic is tautologies, not Platonic forms [Wittgenstein, by Monk]
|
5. Theory of Logic / D. Assumptions for Logic / 3. Contradiction
23496
|
Two colours in the same place is ruled out by the logical structure of colour [Wittgenstein]
|
5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic
18154
|
The sign of identity is not allowed in 'Tractatus' [Wittgenstein, by Bostock]
|
13429
|
The identity sign is not essential in logical notation, if every sign has a different meaning [Wittgenstein, by Ramsey]
|
5. Theory of Logic / E. Structures of Logic / 1. Logical Form
18268
|
Apparent logical form may not be real logical form [Wittgenstein]
|
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
10905
|
My fundamental idea is that the 'logical constants' do not represent [Wittgenstein]
|
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not
23493
|
'Not' isn't an object, because not-not-p would then differ from p [Wittgenstein]
|
5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic
7784
|
'Object' is a pseudo-concept, properly indicated in logic by the variable x [Wittgenstein]
|
5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
23506
|
Names are primitive, and cannot be analysed [Wittgenstein]
|
5. Theory of Logic / F. Referring in Logic / 1. Naming / c. Names as referential
7089
|
A name is primitive, and its meaning is the object [Wittgenstein]
|
5. Theory of Logic / F. Referring in Logic / 3. Property (λ-) Abstraction
11028
|
λ-abstraction disambiguates the scope of modal operators [Fitting]
|
5. Theory of Logic / G. Quantification / 1. Quantification
9467
|
Wittgenstein tried unsuccessfully to reduce quantifiers to conjunctions and disjunctions [Wittgenstein, by Jacquette]
|
5. Theory of Logic / H. Proof Systems / 1. Proof Systems
15089
|
Logical proof just explicates complicated tautologies [Wittgenstein]
|
5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
13830
|
Logical truths are just 'by-products' of the introduction rules for logical constants [Wittgenstein, by Hacking]
|
5. Theory of Logic / K. Features of Logics / 1. Axiomatisation
19292
|
Logic doesn't split into primitive and derived propositions; they all have the same status [Wittgenstein]
|