List questions from proof-writing

Published on 10 Apr 2026 - 8:42

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Prove that $\lim_{x\to a}\bigr(C f(x)\bigl) = C \lim_{x\to a} f(x)$

Published on 16 Apr 2026 - 3:42

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Show that if vectors $(\overline{v},\overline{w}) \in V$ are linearly independent then they are not parallel

Published on 12 Apr 2026 - 1:03

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New to proofs and would like your shared experience

Published on 11 Apr 2026 - 10:14

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Demonstration of the maximum product of the terms of an average

Published on 13 Apr 2026 - 0:56

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proof if vectors are linearly independent then they are not parallel

Published on 11 Apr 2026 - 12:33

334

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For What Non-Negative Integer Values of $n$ is $n!\geq 3^n$

Published on 15 Apr 2026 - 14:08

110

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Why is the identity permutation in $A_n$?

Published on 15 Apr 2026 - 4:18

42

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Properties of relations proofs

Published on 09 Apr 2026 - 15:18

112

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Prove: $A\cap (B - C) = (A \cap B) - (A \cap C)$

Published on 15 Apr 2026 - 18:53

35

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Proving $\forall x \in R$: $x = \frac{2k}{m}$ $\iff$ $x \in Q$

Published on 16 Apr 2026 - 11:03

97

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Proving inequalities with fractions: $(\frac{1}{2^n+1}+\frac{1}{2^n+2}+\frac{1}{2^n+3}+\ldots+\frac{1}{2^{n+1}})>\frac{1}{2}$

Published on 17 Apr 2026 - 15:05

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trying to prove or disprove $C$ for the sequence: $\forall c \in N : S_n = n^2 - n$

Published on 15 Apr 2026 - 10:29

544

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An interesting algorithm about prime numbers that I thought today

Published on 09 Apr 2026 - 11:56

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Finite Sets, Equal Cardinality, Injective $\iff$ Surjective.

Published on 14 Apr 2026 - 19:34

List Question

Proof for converting powers into roots

Prove that $\lim_{x\to a}\bigr(C f(x)\bigl) = C \lim_{x\to a} f(x)$

Show that if vectors $(\overline{v},\overline{w}) \in V$ are linearly independent then they are not parallel

New to proofs and would like your shared experience

Demonstration of the maximum product of the terms of an average

proof if vectors are linearly independent then they are not parallel

For What Non-Negative Integer Values of $n$ is $n!\geq 3^n$

Why is the identity permutation in $A_n$?

Properties of relations proofs

Prove: $A\cap (B - C) = (A \cap B) - (A \cap C)$

Proving $\forall x \in R$: $x = \frac{2k}{m}$ $\iff$ $x \in Q$

Proving inequalities with fractions: $(\frac{1}{2^n+1}+\frac{1}{2^n+2}+\frac{1}{2^n+3}+\ldots+\frac{1}{2^{n+1}})>\frac{1}{2}$

trying to prove or disprove $C$ for the sequence: $\forall c \in N : S_n = n^2 - n$

An interesting algorithm about prime numbers that I thought today

Finite Sets, Equal Cardinality, Injective $\iff$ Surjective.

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