Question

When are we allowed to use the $\exists$ elimination rule in first-order natural deduction?

score 795 · Answer 1 · 2026-03-25 13:55:45

795

Views

When are we allowed to use the $\exists$ elimination rule in first-order natural deduction?

Published on 25 Mar 2026 - 13:55

score 261 · Answer 2 · 2026-03-27 04:15:21

261

Views

Logical statements with multiple quantifiers - discrete math

Published on 27 Mar 2026 - 4:15

score 61 · Answer 3 · 2026-03-27 02:39:14

61

Views

How to translate the following predicates with quantifiers into English?

Published on 27 Mar 2026 - 2:39

score 149 · Answer 4 · 2026-03-27 02:39:42

149

Views

Rewriting statements in full detail with logical operators, but without quantifiers

Published on 27 Mar 2026 - 2:39

score 62 · Answer 5 · 2019-05-20 07:17:31

62

Views

If the language has only one predicate, can we simplify the quantifiers?

Published on 20 May 2019 - 7:17

score 62 · Answer 6 · 2026-03-25 13:59:45

62

Views

Usage of (x, 1) (1) in natural deduction

Published on 25 Mar 2026 - 13:59

score 65 · Answer 7 · 2026-03-25 04:36:05

65

Views

Logic of predicates over predicates?

Published on 25 Mar 2026 - 4:36

score 73 · Answer 8 · 2019-05-20 15:21:38

73

Views

How to transform a sequent notation to rule form?

Published on 20 May 2019 - 15:21

score 90 · Answer 9 · 2026-03-26 02:55:55

90

Views

Is there an error in this proof the the "strong induction" theorem? Is this Escherian logic?

Published on 26 Mar 2026 - 2:55

score 99 · Answer 10 · 2026-03-27 02:36:11

99

Views

$\lnot\exists x(S(x) \Rightarrow R(x))$ VS $\forall x(S(x) \Rightarrow R(x))$ Without Using De Morgan's Law

Published on 27 Mar 2026 - 2:36

score 42 · Answer 11 · 2026-03-27 04:18:31

42

Views

First order logic question about whether variables in the same sentence are bound

Published on 27 Mar 2026 - 4:18

score 46 · Answer 12 · 2019-05-26 03:37:20

46

Views

Which of the following is the best way to define a new predicate in first-order logic?

Published on 26 May 2019 - 3:37

score 199 · Answer 13 · 2019-05-26 09:02:13

199

Views

Can variable-containing statements (propositional functions) contain propositional variables?

Published on 26 May 2019 - 9:02

score 459 · Answer 14 · 2026-03-25 09:17:00

459

Views

Discrete math - show argument is valid using rules of inference and the logical equivalences

Published on 25 Mar 2026 - 9:17

score 47 · Answer 15 · 2019-05-28 13:46:22

47

Views

Proof of well-ordering of $\mathbb{N}$ using modified induction and contraposition.

Published on 28 May 2019 - 13:46

List Question

When are we allowed to use the $\exists$ elimination rule in first-order natural deduction?

Logical statements with multiple quantifiers - discrete math

How to translate the following predicates with quantifiers into English?

Rewriting statements in full detail with logical operators, but without quantifiers

If the language has only one predicate, can we simplify the quantifiers?

Usage of (x, 1) (1) in natural deduction

Logic of predicates over predicates?

How to transform a sequent notation to rule form?

Is there an error in this proof the the "strong induction" theorem? Is this Escherian logic?

$\lnot\exists x(S(x) \Rightarrow R(x))$ VS $\forall x(S(x) \Rightarrow R(x))$ Without Using De Morgan's Law

First order logic question about whether variables in the same sentence are bound

Which of the following is the best way to define a new predicate in first-order logic?

Can variable-containing statements (propositional functions) contain propositional variables?

Discrete math - show argument is valid using rules of inference and the logical equivalences

Proof of well-ordering of $\mathbb{N}$ using modified induction and contraposition.

Trending Questions

Popular # Hahtags

Popular Questions