List questions from natural-deduction

Published on 01 Jun 2020 - 2:22

451

Views

quantifier negation proof with natural deduction?

Published on 03 Jun 2020 - 16:07

37

Views

Can different variables refer to the same object without an identity rule stated explicitly?

Published on 03 Jun 2020 - 16:54

230

Views

First order logic natural deduction problem

Published on 04 Jun 2020 - 0:48

96

Views

Suppose $b$ is the smallest element of $B$. Then $b$ is also a minimal element of $B$, and it is the only minimal element.

Published on 06 Jun 2020 - 19:25

89

Views

Suppose $b$ is the smallest element of $B$. Then $b$ is also a minimal element of $B$.

Published on 07 Jun 2020 - 14:01

186

Views

Deduction theorem for Natural Deduction

Published on 09 Jun 2020 - 18:37

94

Views

Show the set $\{(x,y) \in \mathbb{Z} \times \mathbb{Z} : 3x+y=4\}$ is a function from $\mathbb{Z}$ to $ \mathbb{Z}$.

Published on 11 Jun 2020 - 17:35

85

Views

$a:A$ in $\Gamma$

Published on 25 Mar 2026 - 18:38

113

Views

Prove $f$ is bijective if and only if the inverse relation $f^{-1}$ is a function from $B$ to $A$.

Published on 13 Jun 2020 - 21:45

112

Views

First-order logic equivalence proof

Published on 13 Jun 2020 - 22:23

164

Views

Changing Scope of Quantifier Natural Deduction

Published on 14 Jun 2020 - 16:48

212

Views

Is it possible to show $(\lnot p \implies p) \implies p \vdash (\lnot \lnot p \implies p)$ in constructive logic?

Published on 26 Mar 2026 - 7:34

109

Views

Is $\neg$Intro necessary for this proof?

Published on 17 Jun 2020 - 12:16

84

Views

Actual and potential truth for neo-verificationists

Published on 25 Mar 2026 - 12:48

List Question

Stuck in logic exercise

quantifier negation proof with natural deduction?

Can different variables refer to the same object without an identity rule stated explicitly?

First order logic natural deduction problem

Suppose $b$ is the smallest element of $B$. Then $b$ is also a minimal element of $B$, and it is the only minimal element.

Suppose $b$ is the smallest element of $B$. Then $b$ is also a minimal element of $B$.

Deduction theorem for Natural Deduction

Show the set $\{(x,y) \in \mathbb{Z} \times \mathbb{Z} : 3x+y=4\}$ is a function from $\mathbb{Z}$ to $ \mathbb{Z}$.

$a:A$ in $\Gamma$

Prove $f$ is bijective if and only if the inverse relation $f^{-1}$ is a function from $B$ to $A$.

First-order logic equivalence proof

Changing Scope of Quantifier Natural Deduction

Is it possible to show $(\lnot p \implies p) \implies p \vdash (\lnot \lnot p \implies p)$ in constructive logic?

Is $\neg$Intro necessary for this proof?

Actual and potential truth for neo-verificationists

Trending Questions

Popular # Hahtags

Popular Questions