Question

Circle symbol for true logical statements?

score 47 · Answer 1 · 2019-04-17 17:16:18

47

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Circle symbol for true logical statements?

Published on 17 Apr 2019 - 17:16

score 320 · Answer 2 · 2019-04-17 21:09:57

320

Views

Distributing locks and keys so certain subsets of people can open all locks

Published on 17 Apr 2019 - 21:09

score 115 · Answer 3 · 2026-03-25 21:44:46

115

Views

Can we prove this proposition without thinking semantics?

Published on 25 Mar 2026 - 21:44

score 72 · Answer 4 · 2019-04-18 11:48:54

72

Views

Is the consequence relation of a finite set of boolean connectives finitely generated?

Published on 18 Apr 2019 - 11:48

score 295 · Answer 5 · 2019-04-18 14:17:22

In a truth table, does a row represent technically an interpretation , or a subset of the whole ( infinite?) collection of possible interpretations?

score 50 · Answer 6 · 2019-04-18 14:53:32

50

Views

Is $(p \lor q) \to (\neg p \to (p \lor q))$ a tautology?

Published on 18 Apr 2019 - 14:53

score 57 · Answer 7 · 2026-03-25 12:22:27

57

Views

Help me with this propositional logic demonstration

Published on 25 Mar 2026 - 12:22

score 218 · Answer 8 · 2026-03-28 14:25:54

218

Views

If every truth assignment satisfies some wff, some finite disjunction is a tautology

Published on 28 Mar 2026 - 14:25

score 67 · Answer 9 · 2019-04-20 09:42:00

67

Views

"Truth set" approach to validity and logical consequence: how does it relate to the standard approach? what are the possible drawbacks?

Published on 20 Apr 2019 - 9:42

score 57 · Answer 10 · 2019-04-22 16:27:59

57

Views

Is there a general and mechanical method to solve algebra of sets (or alg.of propositions) equations?

Published on 22 Apr 2019 - 16:27

score 674 · Answer 11 · 2019-04-23 10:56:58

674

Views

Are " replacement rules" and " inference rules" ( in natural deduction) really two kinds of rules?

Published on 23 Apr 2019 - 10:56

score 82 · Answer 12 · 2019-04-24 08:56:37

82

Views

Natural Deduction proof: C Ʌ D, C ↔ E |- (C V F) Ʌ (D V F) Ʌ (E V F)

Published on 24 Apr 2019 - 8:56

score 78 · Answer 13 · 2026-03-25 12:22:28

78

Views

Natural deduction proof: C Ʌ D, C ↔ E, D ↔ F |- E Ʌ F

Published on 25 Mar 2026 - 12:22

score 988 · Answer 14 · 2026-03-25 12:29:31

988

Views

Natural deduction proof: $A \vee (B \wedge C) ├ (A \vee B) \wedge (A \vee C)$

Published on 25 Mar 2026 - 12:29

score 124 · Answer 15 · 2019-04-24 19:20:00

124

Views

Velleman - Conditional truth table justification

Published on 24 Apr 2019 - 19:20

List Question

Circle symbol for true logical statements?

Distributing locks and keys so certain subsets of people can open all locks

Can we prove this proposition without thinking semantics?

Is the consequence relation of a finite set of boolean connectives finitely generated?

In a truth table, does a row represent technically an interpretation , or a subset of the whole ( infinite?) collection of possible interpretations?

Is $(p \lor q) \to (\neg p \to (p \lor q))$ a tautology?

Help me with this propositional logic demonstration

If every truth assignment satisfies some wff, some finite disjunction is a tautology

"Truth set" approach to validity and logical consequence: how does it relate to the standard approach? what are the possible drawbacks?

Is there a general and mechanical method to solve algebra of sets (or alg.of propositions) equations?

Are " replacement rules" and " inference rules" ( in natural deduction) really two kinds of rules?

Natural Deduction proof: C Ʌ D, C ↔ E |- (C V F) Ʌ (D V F) Ʌ (E V F)

Natural deduction proof: C Ʌ D, C ↔ E, D ↔ F |- E Ʌ F

Natural deduction proof: $A \vee (B \wedge C) ├ (A \vee B) \wedge (A \vee C)$

Velleman - Conditional truth table justification

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