Question

Is it admissible in a Fitch proof to use $\to$ introduction that "cuts across" subproofs and doesn't discharge them?

score 137 · Answer 1 · 2021-03-30 18:04:14

Is it admissible in a Fitch proof to use $\to$ introduction that "cuts across" subproofs and doesn't discharge them?

Published on 30 Mar 2021 - 18:04

score 57 · Answer 2 · 2021-04-11 21:33:57

$(\bigcup_{\alpha \in J} (U_\alpha \times V_\alpha)) \cap (A \times B) = \bigcup_{\alpha \in J}((U_\alpha) \cap A) \times (V_\alpha \cap B))$

score 624 · Answer 3 · 2026-03-26 01:01:59

624

Views

How to prove that L* is context free?

Published on 26 Mar 2026 - 1:01

score 516 · Answer 4 · 2026-03-26 01:10:37

516

Views

How to prove that my CFG grammar generates $L_1$

Published on 26 Mar 2026 - 1:10

score 72 · Answer 5 · 2026-03-25 23:36:49

72

Views

Can we find grammar for every CFL without $ε $ with these productions

Published on 25 Mar 2026 - 23:36

score 100 · Answer 6 · 2026-03-26 12:42:52

100

Views

How do you formalize this reasoning?

Published on 26 Mar 2026 - 12:42

score 263 · Answer 7 · 2021-06-05 10:16:16

263

Views

Is the wf $B \to \forall x B$ logically valid?

Published on 05 Jun 2021 - 10:16

score 45 · Answer 8 · 2021-06-09 07:54:36

45

Views

Problem with the Formal Definition of a Limit

Published on 09 Jun 2021 - 7:54

score 732 · Answer 9 · 2021-06-16 11:33:04

732

Views

Fitch natural deduction proof of $\exists xF(x) \lor \exists xG(x) \vdash \exists x (F(x) \lor G(x))$

Published on 16 Jun 2021 - 11:33

score 204 · Answer 10 · 2021-06-25 16:32:31

204

Views

How does $\exists !x:P(x)$ allow the definition of a new constant in formal logic?

Published on 25 Jun 2021 - 16:32

score 159 · Answer 11 · 2026-02-23 10:23:37

159

Views

strong completeness of a formal system

Published on 23 Feb 2026 - 10:23

score 206 · Answer 12 · 2026-03-26 14:25:18

206

Views

Simplest set of axioms and inference rules for first-order logic?

Published on 26 Mar 2026 - 14:25

score 72 · Answer 13 · 2021-07-12 08:57:59

If a and b are positive integers satisfying $(a^{([2n-1]^2)}) \vert b^{([2n]^2)}$ and $b^{([2n]^2)} \vert (a^{([2n+1]^2)})$ prove a = b.

score 185 · Answer 14 · 2021-07-25 10:10:56

185

Views

Prove Power Rule for Limits: $\lim_{x \to a} f(x)^{g(x)} = \left(\lim_{x \to a} f(x)\right)^{\lim_{x\to a} g(x)}$

Published on 25 Jul 2021 - 10:10

score 34 · Answer 15 · 2021-07-31 14:44:07

34

Views

Need help proving theorem for limits of multivariable functions (parabola approach)

Published on 31 Jul 2021 - 14:44

List Question

Is it admissible in a Fitch proof to use $\to$ introduction that "cuts across" subproofs and doesn't discharge them?

$(\bigcup_{\alpha \in J} (U_\alpha \times V_\alpha)) \cap (A \times B) = \bigcup_{\alpha \in J}((U_\alpha) \cap A) \times (V_\alpha \cap B))$

How to prove that L* is context free?

How to prove that my CFG grammar generates $L_1$

Can we find grammar for every CFL without $ε $ with these productions

How do you formalize this reasoning?

Is the wf $B \to \forall x B$ logically valid?

Problem with the Formal Definition of a Limit

Fitch natural deduction proof of $\exists xF(x) \lor \exists xG(x) \vdash \exists x (F(x) \lor G(x))$

How does $\exists !x:P(x)$ allow the definition of a new constant in formal logic?

strong completeness of a formal system

Simplest set of axioms and inference rules for first-order logic?

If a and b are positive integers satisfying $(a^{([2n-1]^2)}) \vert b^{([2n]^2)}$ and $b^{([2n]^2)} \vert (a^{([2n+1]^2)})$ prove a = b.

Prove Power Rule for Limits: $\lim_{x \to a} f(x)^{g(x)} = \left(\lim_{x \to a} f(x)\right)^{\lim_{x\to a} g(x)}$

Need help proving theorem for limits of multivariable functions (parabola approach)

Trending Questions

Popular # Hahtags

Popular Questions