List questions from formal-proofs

Published on 27 Mar 2026 - 23:00

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Prove each equivalence by using the rules for semantic equivalence

Published on 17 Feb 2016 - 17:18

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A method of proof by contradiction for independence?

Published on 17 Feb 2016 - 21:45

140

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Formal proof for $q \land \neg q \vdash r \land \neg r$

Published on 19 Feb 2016 - 17:00

588

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In formal verification, what is the formal specification, what formally means there?

Published on 21 Feb 2016 - 10:58

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No Proof, Just Luck

Published on 27 Mar 2026 - 21:27

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Are the following two limits the same?

Published on 02 Mar 2016 - 4:37

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Trying to check whether a formal proof is correct

Published on 02 Mar 2016 - 16:11

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$1^{p−1}+2^{p−1}+…+(p−1)^{p−1}≡−1 \pmod p$

Published on 09 Mar 2016 - 4:15

97

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Proof (2nm +3m is a multiple of 7)?

Published on 09 Mar 2016 - 14:35

42

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How to prove the group $S_4$ of permutations (or bijections) has no elements of order 12?

Published on 13 Mar 2016 - 19:50

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L-shaped trominoes

Published on 27 Mar 2026 - 23:29

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Prove that taking the inverse Fourier transform of frequency returns time.

Published on 21 Mar 2016 - 3:36

703

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Prove a Recursive Formula by Induction?

Published on 23 Mar 2016 - 3:23

825

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Formal deduction proof of predicates

Published on 30 Mar 2016 - 8:58

List Question

Natural deduction proof / Formal proof : Complicated conclusion with no premise

Prove each equivalence by using the rules for semantic equivalence

A method of proof by contradiction for independence?

Formal proof for $q \land \neg q \vdash r \land \neg r$

In formal verification, what is the formal specification, what formally means there?

No Proof, Just Luck

Are the following two limits the same?

Trying to check whether a formal proof is correct

$1^{p−1}+2^{p−1}+…+(p−1)^{p−1}≡−1 \pmod p$

Proof (2nm +3m is a multiple of 7)?

How to prove the group $S_4$ of permutations (or bijections) has no elements of order 12?

L-shaped trominoes

Prove that taking the inverse Fourier transform of frequency returns time.

Prove a Recursive Formula by Induction?

Formal deduction proof of predicates

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