List questions from proof-verification

Published on 11 Apr 2026 - 17:43

394

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Peano Axiom Proofs: Proving $a < b$, if and only if $a + + \leq b$

Published on 14 Apr 2026 - 9:10

145

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Sequence of function on $\mathbb{R}$ Cauchy iff convergent

Published on 13 Apr 2026 - 22:44

110

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I need help to understand a problem in Linear Algebra about calculating a set.

Published on 09 Apr 2026 - 2:43

159

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Dimension of the null space of an invertible square matrix $A$

Published on 12 Apr 2026 - 12:20

135

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Is the following proof regarding the degree of a splitting field correct?

Published on 12 Apr 2026 - 7:01

335

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Determine the maximal ideals of $\mathbb R^2$ by noting $\mathbb R^2 \cong \mathbb R[x]/(x^2-1)$

Published on 14 Apr 2026 - 18:23

298

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Preimage of maximal ideal is maximal (why is this answer wrong?)

Published on 14 Apr 2026 - 11:48

88

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Feedback on answer regarding Linear Algebra

Published on 14 Apr 2026 - 6:30

47

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Property of sequence of remainders

Published on 17 Apr 2026 - 4:27

675

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For which values of $\ a, b $ the matrix is diagonalizable

Published on 14 Apr 2026 - 12:22

3k

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If a matrix A is both triangular and unitary, then it is diagonal

Published on 15 Apr 2026 - 19:42

1k

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Common Doubt: What did I do wrong here?-Number of ways to arrange green and blue bottles........

Published on 13 Apr 2026 - 18:30

171

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Proving uniform continuity of $f(x) = x \sin{\frac{1}{x}}$ on $(1,2)$ directly from the definition.

Published on 16 Apr 2026 - 1:36

126

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What was the exact form of Gödel's original Second Incompleteness Theorem?

Published on 14 Apr 2026 - 8:18

List Question

Extension of measures: doubts on a proof.

Peano Axiom Proofs: Proving $a < b$, if and only if $a + + \leq b$

Sequence of function on $\mathbb{R}$ Cauchy iff convergent

I need help to understand a problem in Linear Algebra about calculating a set.

Dimension of the null space of an invertible square matrix $A$

Is the following proof regarding the degree of a splitting field correct?

Determine the maximal ideals of $\mathbb R^2$ by noting $\mathbb R^2 \cong \mathbb R[x]/(x^2-1)$

Preimage of maximal ideal is maximal (why is this answer wrong?)

Feedback on answer regarding Linear Algebra

Property of sequence of remainders

For which values of $\ a, b $ the matrix is diagonalizable

If a matrix A is both triangular and unitary, then it is diagonal

Common Doubt: What did I do wrong here?-Number of ways to arrange green and blue bottles........

Proving uniform continuity of $f(x) = x \sin{\frac{1}{x}}$ on $(1,2)$ directly from the definition.

What was the exact form of Gödel's original Second Incompleteness Theorem?

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