Question

How are $ \exists x (P(x) ⊕ Q(x)) $ and $(\exists x P(x)) ⊕ (\exists x Q(x))$ not logically equivalent?

score 1.3k · Answer 1 · 2014-10-10 00:42:10

1.3k

Views

How are $ \exists x (P(x) ⊕ Q(x)) $ and $(\exists x P(x)) ⊕ (\exists x Q(x))$ not logically equivalent?

Published on 10 Oct 2014 - 0:42

score 1.1k · Answer 2 · 2014-10-10 03:55:23

1.1k

Views

Find a universe for variables $x$, $y$, and $z$ for which the statement is true and another universe in which it is false.

Published on 10 Oct 2014 - 3:55

score 586 · Answer 3 · 2014-10-10 06:29:51

586

Views

find a universe for variables x, y, and z for which this statement is true and another universe in which it is false

Published on 10 Oct 2014 - 6:29

score 153 · Answer 4 · 2014-10-10 21:13:16

153

Views

Analyzing logical form of ∀x∀yM(x, y)

Published on 10 Oct 2014 - 21:13

score 497 · Answer 5 · 2014-10-14 00:46:23

497

Views

Statements to Predicates and Quantifiers

Published on 14 Oct 2014 - 0:46

score 3.2k · Answer 6 · 2014-10-14 01:43:25

3.2k

Views

Proving the Truth Value of Quantified Statements

Published on 14 Oct 2014 - 1:43

score 117 · Answer 7 · 2014-10-15 20:48:15

117

Views

Bounded quantifier and it's meaning

Published on 15 Oct 2014 - 20:48

score 7.8k · Answer 8 · 2014-10-15 21:39:24

7.8k

Views

Set of all perfect squares

Published on 15 Oct 2014 - 21:39

score 99 · Answer 9 · 2014-10-17 06:28:17

99

Views

Solving $\{n^2 + n + 1 | n \in \mathbb{N} \} \subseteq \{2n + 1 | n \in \mathbb{N} \}$

Published on 17 Oct 2014 - 6:28

score 177 · Answer 10 · 2026-03-25 22:01:45

177

Views

Second order universal quantifier elimination restriction

Published on 25 Mar 2026 - 22:01

score 730 · Answer 11 · 2026-03-25 01:15:30

730

Views

When is de-Skolemizing statements appropriate?

Published on 25 Mar 2026 - 1:15

score 98 · Answer 12 · 2014-10-18 07:38:05

98

Views

Clarification regarding bound variables and quantifiers

Published on 18 Oct 2014 - 7:38

score 260 · Answer 13 · 2014-10-18 17:26:09

260

Views

Showing that ∀x ∈ S ∀y ∈ E ( Q(x, y) → R(x) ) ≡ ∀x ∈ S (∃y ∈ E Q(x, y)) → R(x)

Published on 18 Oct 2014 - 17:26

score 120 · Answer 14 · 2014-10-18 17:59:50

120

Views

Universe of discourse in $A \subseteq B$

Published on 18 Oct 2014 - 17:59

score 1.8k · Answer 15 · 2026-03-25 04:37:18

1.8k

Views

Why is Skolem normal form equisatisfiable while the second order form equivalent?

Published on 25 Mar 2026 - 4:37

List Question

How are $ \exists x (P(x) ⊕ Q(x)) $ and $(\exists x P(x)) ⊕ (\exists x Q(x))$ not logically equivalent?

Find a universe for variables $x$, $y$, and $z$ for which the statement is true and another universe in which it is false.

find a universe for variables x, y, and z for which this statement is true and another universe in which it is false

Analyzing logical form of ∀x∀yM(x, y)

Statements to Predicates and Quantifiers

Proving the Truth Value of Quantified Statements

Bounded quantifier and it's meaning

Set of all perfect squares

Solving $\{n^2 + n + 1 | n \in \mathbb{N} \} \subseteq \{2n + 1 | n \in \mathbb{N} \}$

Second order universal quantifier elimination restriction

When is de-Skolemizing statements appropriate?

Clarification regarding bound variables and quantifiers

Showing that ∀x ∈ S ∀y ∈ E ( Q(x, y) → R(x) ) ≡ ∀x ∈ S (∃y ∈ E Q(x, y)) → R(x)

Universe of discourse in $A \subseteq B$

Why is Skolem normal form equisatisfiable while the second order form equivalent?

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