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* A few more important tautologies.David A. Madore2023-12-031-1/+5
* Various informal explanations of constructive math / intuitionism.David A. Madore2023-12-021-0/+142
* Classical logic.David A. Madore2023-12-021-3/+71
* Proof of negation vs reduction ad absurdum.David A. Madore2023-12-021-0/+54
* Examples of non-tautologies.David A. Madore2023-12-021-3/+37
* Some important tautologies.David A. Madore2023-12-021-0/+58
* Yet another presentation of natural deduction proofs (flag presentation).David A. Madore2023-12-021-2/+38
* Another presentation of natural deduction proofs.David A. Madore2023-12-021-2/+49
* An exercise on a possible representation of pairs in functional programming l...David A. Madore2023-12-011-5/+146
* Another exercise on various "loopy" reductions.David A. Madore2023-12-011-1/+120
* Give two examples of natural deduction proofs (written in sequent style).David A. Madore2023-11-301-0/+41
* Some exercises on the untyped lambda-calculus.David A. Madore2023-11-301-0/+286
* Minor fixes.David A. Madore2023-11-301-3/+3
* Much longer explanation of the Y (and also Z) combinator.David A. Madore2023-11-281-5/+139
* Highlight discharged hypotheses in natural deduction presentation.David A. Madore2023-11-281-3/+7
* Fix various small mistakes or unclear points.David A. Madore2023-11-281-9/+8
* Alternative notation for multiple lambdas.David A. Madore2023-11-281-2/+3
* Avoid speaking of type "constructors", a word which might cause confusion.David A. Madore2023-11-281-4/+4
* Typo.David A. Madore2023-11-281-1/+1
* Rules of inuitionistic propositional calculus in natural deduction style.David A. Madore2023-11-271-0/+39
* Syntax of propositional calculus.David A. Madore2023-11-271-2/+39
* Quick overview of intuitionistic propositional calculus.David A. Madore2023-11-271-0/+38
* A (humorous) graphical representation of the Curry-Howard correspondence.David A. Madore2023-11-243-4/+27
* Graphical representation of typing rules.David A. Madore2023-11-221-8/+35
* Brief summary of Tait's proof of normalization of the STLC.David A. Madore2023-11-221-5/+42
* Clarification on how to read a derivation tree.David A. Madore2023-11-221-0/+8
* Give some examples of terms and types in the STLC before formalizing.David A. Madore2023-11-221-4/+44
* A first taste of the Curry-Howard correspondence.David A. Madore2023-11-221-1/+34
* A few clarifications on stability of decidable and semidecidable sets.David A. Madore2023-11-221-3/+7
* Exercise on computable inseparability.David A. Madore2023-11-211-0/+129
* Prepare exercise sheet for publication.David A. Madore2023-11-211-19/+23
* Exercise on looping Turing machines.David A. Madore2023-11-211-0/+71
* Exercise showing that the indices of total functions is not semi-decidable no...David A. Madore2023-11-211-0/+140
* Fix various mistakes (or notational blunders) noted during lecture on 2023-11...David A. Madore2023-11-201-5/+5
* The graph of the Ackermann function is p.r.David A. Madore2023-11-201-0/+235
* More exercises on computability.David A. Madore2023-11-191-13/+250
* Some exercises on computability.David A. Madore2023-11-171-0/+350
* Fix various mistakes (or notational blunders) noted during lecture on 2023-11...David A. Madore2023-11-171-21/+24
* Beta-reduction and strong normalization (to be continued).David A. Madore2023-11-161-0/+41
* More properties of typing, incl. the substitution lemma.David A. Madore2023-11-161-6/+97
* Some properties of derivation in simply-typed lambda-calculus.David A. Madore2023-11-161-0/+111
* Give an example of a fully written out derivation tree.David A. Madore2023-11-151-0/+39
* Rules of the simply-typed lambda-calculus.David A. Madore2023-11-151-3/+122
* Various curiosities.David A. Madore2023-11-151-3/+32
* Type systems for logic.David A. Madore2023-11-151-1/+67
* Curry's paradox (an interlude).David A. Madore2023-11-151-0/+88
* Typing and termination.David A. Madore2023-11-151-0/+41
* Tasks in a typing system.David A. Madore2023-11-151-1/+45
* More examples of languages with interesting type systems.David A. Madore2023-11-151-4/+47
* Use of typing systems beyond value control.David A. Madore2023-11-151-0/+36
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