List questions from proof-explanation

Published on 12 Apr 2026 - 3:43

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Question on Linear Algebra Done Right Proof (3.A.10)

Published on 14 Apr 2026 - 16:38

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How to prove if $(A \cup B) - (A \cap B) = A$ is true, then $B = \emptyset$?

Published on 19 Apr 2026 - 2:04

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A sum involving fractional parts and prime numbers

Published on 25 Mar 2026 - 15:51

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Constructive proof of approximate Brouwer's Fixed Point Theorem for $\Delta^n$ via Sperner's lemma

Published on 26 Mar 2026 - 7:34

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Question about the connection between limits and sequences ( Rudin 4.2 )

Published on 12 Apr 2026 - 8:00

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Examples of basis

Published on 15 Apr 2026 - 14:39

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Show that the projection is $\in End(V)$

Published on 21 Apr 2026 - 12:02

119

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Some obscure points about the proof of Hahn Decomposition Theorem

Published on 12 Apr 2026 - 23:20

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Example of basis

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Explanation of how to get $38x+19y=3xy$ into factorised form.

Published on 10 Apr 2026 - 13:08

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sum of pairs and sum of squares $\left(\sum x_i\right)^2-2\sum_{cyc}x_ix_j=\sum x_i^2$

Published on 16 Apr 2026 - 19:16

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How to Prove a Special Case of Stokes' Theorem?

Published on 25 Mar 2026 - 15:54

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Let $a$ & $b$ be non-zero vectors such that $a · b = 0$. Use geometric description of scalar product to show that

Published on 21 Apr 2026 - 11:23

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Prove that $p$ divides $ \left(1 ^ {p^ n} + 2 ^ {p^ n} +\cdots+ (p-1)^ {p^ n}\right) $.

Published on 17 Apr 2026 - 4:32

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Confusion on a lemma

Question on Linear Algebra Done Right Proof (3.A.10)

How to prove if $(A \cup B) - (A \cap B) = A$ is true, then $B = \emptyset$?

A sum involving fractional parts and prime numbers

Constructive proof of approximate Brouwer's Fixed Point Theorem for $\Delta^n$ via Sperner's lemma

Question about the connection between limits and sequences ( Rudin 4.2 )

Examples of basis

Show that the projection is $\in End(V)$

Some obscure points about the proof of Hahn Decomposition Theorem

Example of basis

Explanation of how to get $38x+19y=3xy$ into factorised form.

sum of pairs and sum of squares $\left(\sum x_i\right)^2-2\sum_{cyc}x_ix_j=\sum x_i^2$

How to Prove a Special Case of Stokes' Theorem?

Let $a$ & $b$ be non-zero vectors such that $a · b = 0$. Use geometric description of scalar product to show that

Prove that $p$ divides $ \left(1 ^ {p^ n} + 2 ^ {p^ n} +\cdots+ (p-1)^ {p^ n}\right) $.

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