Question

Proving ◦ is either nand or nor if ◦ is a binary operator that can define negation and all other binary operators by itself.

score 291 · Answer 1 · 2026-03-27 13:27:25

291

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Proving ◦ is either nand or nor if ◦ is a binary operator that can define negation and all other binary operators by itself.

Published on 27 Mar 2026 - 13:27

score 215 · Answer 2 · 2026-03-25 04:41:35

215

Views

Find an expression, which is the and of clauses, equivalent to $( p \lor q) \to r$ .

Published on 25 Mar 2026 - 4:41

score 124 · Answer 3 · 2026-03-25 04:36:57

124

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Confusion in determining an argument's validity?

Published on 25 Mar 2026 - 4:36

score 281 · Answer 4 · 2026-03-25 18:47:38

281

Views

Set of Propositional Formulae with no equivalent independent subset

Published on 25 Mar 2026 - 18:47

score 245 · Answer 5 · 2018-10-08 23:33:42

245

Views

How does one show $\Sigma \vdash p$ then $\Sigma \models p$ in propositional logic?

Published on 08 Oct 2018 - 23:33

score 565 · Answer 6 · 2026-03-26 12:07:02

565

Views

Formally how does one show that if $\Sigma$ is consistent and $\Sigma \vdash p$ then $\Sigma \cup \{ p\}$?

Published on 26 Mar 2026 - 12:07

score 72 · Answer 7 · 2026-03-26 06:25:59

72

Views

Proving or Disproving Logical Equivalence Involving Inverse Quantifiers

Published on 26 Mar 2026 - 6:25

score 181 · Answer 8 · 2018-10-11 22:13:16

181

Views

How does one prove atoms in propositional logic?

Published on 11 Oct 2018 - 22:13

score 75 · Answer 9 · 2018-10-11 23:25:29

75

Views

Why is the truth function $t_{\Sigma}(p)$ that picks up provable proposition legal?

Published on 11 Oct 2018 - 23:25

score 66 · Answer 10 · 2018-10-12 23:47:05

66

Views

Propositional logic implications from a triangle not being 2 colorable

Published on 12 Oct 2018 - 23:47

score 85 · Answer 11 · 2018-10-13 16:44:03

85

Views

Can element of a set be a logical sentence?

Published on 13 Oct 2018 - 16:44

score 214 · Answer 12 · 2018-10-14 06:53:33

214

Views

Negate and simplify: $p\lor q\lor(\lnot p\land \lnot q\land r)$

Published on 14 Oct 2018 - 6:53

score 34.2k · Answer 13 · 2026-03-27 15:05:34

34.2k

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How to prove that $[(p \to q) \land (q \to r)] \to (p \to r)$ is a tautology without using the truth table?

Published on 27 Mar 2026 - 15:05

score 41 · Answer 14 · 2018-10-14 16:50:24

41

Views

Finding disjunctive normal form (logic)

Published on 14 Oct 2018 - 16:50

score 39 · Answer 15 · 2026-03-27 14:57:58

39

Views

How to solve this boolean logic question?

Published on 27 Mar 2026 - 14:57

List Question

Proving ◦ is either nand or nor if ◦ is a binary operator that can define negation and all other binary operators by itself.

Find an expression, which is the and of clauses, equivalent to $( p \lor q) \to r$ .

Confusion in determining an argument's validity?

Set of Propositional Formulae with no equivalent independent subset

How does one show $\Sigma \vdash p$ then $\Sigma \models p$ in propositional logic?

Formally how does one show that if $\Sigma$ is consistent and $\Sigma \vdash p$ then $\Sigma \cup \{ p\}$?

Proving or Disproving Logical Equivalence Involving Inverse Quantifiers

How does one prove atoms in propositional logic?

Why is the truth function $t_{\Sigma}(p)$ that picks up provable proposition legal?

Propositional logic implications from a triangle not being 2 colorable

Can element of a set be a logical sentence?

Negate and simplify: $p\lor q\lor(\lnot p\land \lnot q\land r)$

How to prove that $[(p \to q) \land (q \to r)] \to (p \to r)$ is a tautology without using the truth table?

Finding disjunctive normal form (logic)

How to solve this boolean logic question?

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