Question

Proof for checking correctness of the multiplication result

score 416 · Answer 1 · 2020-10-09 23:24:17

416

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Proof for checking correctness of the multiplication result

Published on 09 Oct 2020 - 23:24

score 134 · Answer 2 · 2020-10-10 08:08:54

134

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T ㅏ (A → B) ∨ (B → A). Give a formal proof of the following theorem.

Published on 10 Oct 2020 - 8:08

score 663 · Answer 3 · 2020-10-17 13:47:55

663

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Where can I find a formal proof of the uniqueness of the empty set in ZFC?

Published on 17 Oct 2020 - 13:47

score 352 · Answer 4 · 2020-10-18 20:12:39

352

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How to find my way in this proof (fitch natural deduction proof) P → ¬Q, ¬Q → P ∴ ¬(Q ↔︎ P)

Published on 18 Oct 2020 - 20:12

score 170 · Answer 5 · 2020-10-19 01:17:39

170

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How to prove ¬(P ∧ ¬Q), ¬P → Q ∴ Q using Fitch-style natural deduction system?

Published on 19 Oct 2020 - 1:17

score 302 · Answer 6 · 2026-02-23 18:46:07

302

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How to establish the modus ponens inference rule in the LK sequent calculus for first-order logic?

Published on 23 Feb 2026 - 18:46

score 108 · Answer 7 · 2020-10-30 15:37:49

108

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Definitive references for formal systems

Published on 30 Oct 2020 - 15:37

score 265 · Answer 8 · 2020-11-04 16:27:41

265

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Is there any finite deductive system for propositional logic which only uses unary rules?

Published on 04 Nov 2020 - 16:27

score 69 · Answer 9 · 2020-11-06 01:20:51

69

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If there are two positive numbers then prove if there are two numbers $q$ and $r$ such that $a=bq+r$

Published on 06 Nov 2020 - 1:20

score 182 · Answer 10 · 2026-03-26 12:45:19

182

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Is there a way to study formal systems in general?

Published on 26 Mar 2026 - 12:45

score 313 · Answer 11 · 2020-11-20 02:11:30

313

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prove the function $w=\sqrt{z}$ is continuous for all $z \in \mathbb{C}$

Published on 20 Nov 2020 - 2:11

score 352 · Answer 12 · 2026-02-23 10:17:37

352

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Prove double negation introduction with this axiom system.

Published on 23 Feb 2026 - 10:17

score 52 · Answer 13 · 2020-12-03 17:52:32

52

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Fundamental proof of calculus and mean value theorem

Published on 03 Dec 2020 - 17:52

score 881 · Answer 14 · 2020-12-04 21:50:15

881

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Natural Deduction Proof: {A v B, ¬A v C} ⊢ B v C

Published on 04 Dec 2020 - 21:50

score 107 · Answer 15 · 2026-02-23 18:38:29

107

Views

Generalized Deduction Theorem

Published on 23 Feb 2026 - 18:38

List Question

Proof for checking correctness of the multiplication result

T ㅏ (A → B) ∨ (B → A). Give a formal proof of the following theorem.

Where can I find a formal proof of the uniqueness of the empty set in ZFC?

How to find my way in this proof (fitch natural deduction proof) P → ¬Q, ¬Q → P ∴ ¬(Q ↔︎ P)

How to prove ¬(P ∧ ¬Q), ¬P → Q ∴ Q using Fitch-style natural deduction system?

How to establish the modus ponens inference rule in the LK sequent calculus for first-order logic?

Definitive references for formal systems

Is there any finite deductive system for propositional logic which only uses unary rules?

If there are two positive numbers then prove if there are two numbers $q$ and $r$ such that $a=bq+r$

Is there a way to study formal systems in general?

prove the function $w=\sqrt{z}$ is continuous for all $z \in \mathbb{C}$

Prove double negation introduction with this axiom system.

Fundamental proof of calculus and mean value theorem

Natural Deduction Proof: {A v B, ¬A v C} ⊢ B v C

Generalized Deduction Theorem

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