Question

Is my derivation of $\vdash (\forall x)(B \implies C) \implies ((\forall x)B \implies (\forall x)C)$ correct?

score 194 · Answer 1 · 2026-02-23 10:19:31

194

Views

Is my derivation of $\vdash (\forall x)(B \implies C) \implies ((\forall x)B \implies (\forall x)C)$ correct?

Published on 23 Feb 2026 - 10:19

score 85 · Answer 2 · 2020-08-22 19:26:11

85

Views

Is my proof of $\vdash (\forall x)(B \implies C) \implies ((\forall x)B \implies (\forall x)C)$, without using deduction theorem, correct?

Published on 22 Aug 2020 - 19:26

score 495 · Answer 3 · 2020-08-31 03:19:10

495

Views

Is this a correct natural deduction proof?

Published on 31 Aug 2020 - 3:19

score 782 · Answer 4 · 2020-08-31 19:19:28

782

Views

Proving logical equivalence using Natural Deduction

Published on 31 Aug 2020 - 19:19

score 491 · Answer 5 · 2026-03-26 12:41:25

491

Views

What's up with the Sheffer stroke axiom?

Published on 26 Mar 2026 - 12:41

score 423 · Answer 6 · 2020-09-05 23:08:14

423

Views

How to solve a Big O problem involving a simple polynomial

Published on 05 Sep 2020 - 23:08

score 37 · Answer 7 · 2026-03-26 12:42:29

37

Views

What differences and relation are between proof systems and deductive systems?

Published on 26 Mar 2026 - 12:42

score 141 · Answer 8 · 2026-03-25 11:10:02

141

Views

Existence and Uniqueness Proofs

Published on 25 Mar 2026 - 11:10

score 262 · Answer 9 · 2020-09-12 20:06:44

262

Views

Natural Deduction Proof without Logical Equivalences

Published on 12 Sep 2020 - 20:06

score 368 · Answer 10 · 2020-09-14 09:33:09

368

Views

Natural Deduction $(\phi \wedge \psi) \to \chi \vdash (\phi \to \chi) \vee (\psi \to \chi)$

Published on 14 Sep 2020 - 9:33

score 378 · Answer 11 · 2020-09-26 01:03:01

378

Views

Predicate Logic and Inference

Published on 26 Sep 2020 - 1:03

score 351 · Answer 12 · 2020-09-27 18:04:40

351

Views

Let $S$ a subspace and $V$ a vector space. Show that the additive identity of $S$ is the additive identity of $V$.

Published on 27 Sep 2020 - 18:04

score 181 · Answer 13 · 2020-09-30 22:04:24

181

Views

Logical consequence/resolution dilemma

Published on 30 Sep 2020 - 22:04

score 298 · Answer 14 · 2026-03-27 23:14:27

298

Views

distributivity of min and max over + and · without the assumption of inverses

Published on 27 Mar 2026 - 23:14

score 175 · Answer 15 · 2026-03-27 12:31:44

175

Views

resolution - satisfiability of formula (edit: renaming clause variables)

Published on 27 Mar 2026 - 12:31

List Question

Is my derivation of $\vdash (\forall x)(B \implies C) \implies ((\forall x)B \implies (\forall x)C)$ correct?

Is my proof of $\vdash (\forall x)(B \implies C) \implies ((\forall x)B \implies (\forall x)C)$, without using deduction theorem, correct?

Is this a correct natural deduction proof?

Proving logical equivalence using Natural Deduction

What's up with the Sheffer stroke axiom?

How to solve a Big O problem involving a simple polynomial

What differences and relation are between proof systems and deductive systems?

Existence and Uniqueness Proofs

Natural Deduction Proof without Logical Equivalences

Natural Deduction $(\phi \wedge \psi) \to \chi \vdash (\phi \to \chi) \vee (\psi \to \chi)$

Predicate Logic and Inference

Let $S$ a subspace and $V$ a vector space. Show that the additive identity of $S$ is the additive identity of $V$.

Logical consequence/resolution dilemma

distributivity of min and max over + and · without the assumption of inverses

resolution - satisfiability of formula (edit: renaming clause variables)

Trending Questions

Popular # Hahtags

Popular Questions