Question

Is there a standard quantifier notation for an exact number of true values?

score 136 · Answer 1 · 2026-05-10 15:45:58

136

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Is there a standard quantifier notation for an exact number of true values?

Published on 10 May 2026 - 15:45

score 204 · Answer 2 · 2026-04-15 15:19:42

204

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Proving $\forall x \forall y Rxy \therefore \forall x \forall y Ryx$.

Published on 15 Apr 2026 - 15:19

score 1k · Answer 3 · 2026-04-17 02:15:18

1k

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Why $∀x(P(x)→Q)$ is equivalent to $∃xP(x)→Q$

Published on 17 Apr 2026 - 2:15

score 663 · Answer 4 · 2026-04-16 09:18:17

663

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Proving ∀x∃yRxy,∀x∀y(Rxy→∃zRzx), ∀x∀y(Ryx→∀zRxz) ∴∀x∀yRxy

Published on 16 Apr 2026 - 9:18

score 538 · Answer 5 · 2026-04-16 05:21:32

538

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Predicate Calculus and Statement

Published on 16 Apr 2026 - 5:21

score 57 · Answer 6 · 2026-04-09 18:02:23

57

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Universal Quantified Statement being equivalent when variables are swapped

Published on 09 Apr 2026 - 18:02

score 118 · Answer 7 · 2026-04-15 03:40:34

118

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We know an example iff any exist

Published on 15 Apr 2026 - 3:40

score 442 · Answer 8 · 2026-04-10 06:22:09

442

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How to express propositional functions with multiple quantifiers using "AND" and "OR'?

Published on 10 Apr 2026 - 6:22

score 149 · Answer 9 · 2026-04-11 05:27:39

149

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Finding prenex normal form of a formula

Published on 11 Apr 2026 - 5:27

score 2k · Answer 10 · 2026-04-08 21:47:48

2k

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Is it possible to convert $\forall$ quantifiers to $\exists$ quantifiers without negation?

Published on 08 Apr 2026 - 21:47

score 234 · Answer 11 · 2026-04-13 20:58:09

234

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Any subcollection $\mathcal A_1$ of a locally finite collection $\mathcal A$ of subsets of $X$ is locally finite.

Published on 13 Apr 2026 - 20:58

score 3.8k · Answer 12 · 2026-04-16 15:27:34

3.8k

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Why is the negation of the statement $\exists x P(x)$ given by $\forall x (\neg P(x))$ and not $\not \exists x P(x)$?

Published on 16 Apr 2026 - 15:27

score 95 · Answer 13 · 2026-04-12 18:55:17

95

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Verifying an inequality if $A \subset \Bbb{C}$ is compact?

Published on 12 Apr 2026 - 18:55

score 127 · Answer 14 · 2026-04-09 08:26:06

127

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How to Prove It - Ch2 Sec 2 Exercise 2a

Published on 09 Apr 2026 - 8:26

score 119 · Answer 15 · 2026-04-13 06:35:38

119

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Is there a notation for the unique value that satisfies a predicate?

Published on 13 Apr 2026 - 6:35

List Question

Is there a standard quantifier notation for an exact number of true values?

Proving $\forall x \forall y Rxy \therefore \forall x \forall y Ryx$.

Why $∀x(P(x)→Q)$ is equivalent to $∃xP(x)→Q$

Proving ∀x∃yRxy,∀x∀y(Rxy→∃zRzx), ∀x∀y(Ryx→∀zRxz) ∴∀x∀yRxy

Predicate Calculus and Statement

Universal Quantified Statement being equivalent when variables are swapped

We know an example iff any exist

How to express propositional functions with multiple quantifiers using "AND" and "OR'?

Finding prenex normal form of a formula

Is it possible to convert $\forall$ quantifiers to $\exists$ quantifiers without negation?

Any subcollection $\mathcal A_1$ of a locally finite collection $\mathcal A$ of subsets of $X$ is locally finite.

Why is the negation of the statement $\exists x P(x)$ given by $\forall x (\neg P(x))$ and not $\not \exists x P(x)$?

Verifying an inequality if $A \subset \Bbb{C}$ is compact?

How to Prove It - Ch2 Sec 2 Exercise 2a

Is there a notation for the unique value that satisfies a predicate?

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