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15
Math.TechQA.Club
2014-09-15 00:11:30
1.2k
Views
How to prove math theorems in formal logic or at least in the style of natural deduction?
Published on
15 Sep 2014 - 0:11
#logic
#natural-deduction
#formal-proofs
4.8k
Views
How to prove that $P \rightarrow Q$ is equivalent with $\neg P \lor Q $?
Published on
17 Sep 2014 - 22:07
#logic
#propositional-calculus
#natural-deduction
#formal-proofs
264
Views
Natural deduction proof - I don't' understand the question
Published on
17 Sep 2014 - 23:02
#logic
#propositional-calculus
#natural-deduction
#formal-proofs
221
Views
Give a natural deduction proof of $\varphi\vdash\top$, where $\varphi$ is any formula
Published on
18 Sep 2014 - 8:03
#logic
#predicate-logic
#natural-deduction
717
Views
How is the implication introduction used here?
Published on
20 Sep 2014 - 8:35
#logic
#natural-deduction
625
Views
How to prove $C$ from $A \leftrightarrow (B \leftrightarrow C)$ and $A \leftrightarrow B$?
Published on
20 Sep 2014 - 18:27
#logic
#propositional-calculus
#natural-deduction
#formal-proofs
300
Views
Deduction of a tautology
Published on
25 Sep 2014 - 1:42
#logic
#propositional-calculus
#natural-deduction
173
Views
Natural deduction: given premises, conclude $M \lor E$.
Published on
30 Sep 2014 - 10:19
#logic
#propositional-calculus
#natural-deduction
1.4k
Views
Stuck on First-Order Logic
Published on
03 Oct 2014 - 18:18
#logic
#predicate-logic
#natural-deduction
#formal-proofs
1.5k
Views
natural deduction proof
Published on
07 Oct 2014 - 8:36
#logic
#propositional-calculus
#natural-deduction
#formal-proofs
1.2k
Views
Biconditional Introduction in natural deduction
Published on
10 Oct 2014 - 16:49
#logic
#propositional-calculus
#natural-deduction
58
Views
Am I assuming too much in this Natural Deduction proof?
Published on
15 Oct 2014 - 0:49
#natural-deduction
352
Views
Deduce $ \forall x P(x) \vdash \exists xP(x) $
Published on
16 Oct 2014 - 17:32
#predicate-logic
#natural-deduction
#formal-proofs
176
Views
Second order universal quantifier elimination restriction
Published on
17 Mar 2026 - 10:48
#logic
#quantifiers
#higher-order-logic
#natural-deduction
244
Views
Natural Deduction for Sentence Logic sets
Published on
18 Oct 2014 - 5:18
#logic
#natural-deduction
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