List questions from proof-explanation

Published on 14 Apr 2026 - 16:27

91

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Prove a number is irrational (explanation)

Published on 11 Apr 2026 - 13:09

304

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Hurwitz Constant - Proof of Lemma 6.1.1. in Esmonde and Murty's Problems in Algebraic Number Theory

Published on 14 Apr 2026 - 1:07

73

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Arguing a heuristic solution to a linear PDE, in weak formulation

Published on 14 Apr 2026 - 16:55

306

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Is this the right way to prove finite cartesian product of compact sets is compact

Published on 13 Apr 2026 - 16:07

763

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$.99999...=1$: What is the proof that we can multiply an infinite series by something to shift it?

Published on 15 Apr 2026 - 22:19

128

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Proof of definite integral

Published on 09 Apr 2026 - 16:26

143

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What is wrong with this proof?2

Published on 11 Apr 2026 - 17:42

78

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Is something arbitrary if it is a function of something else?

Published on 10 Apr 2026 - 13:57

60

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Proof on gcd divisor

Published on 10 Apr 2026 - 2:51

4k

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Prove/Disprove: When $A,B,C$ are symmetric matrices, the transpose of $ABC$ is $CBA$

Published on 13 Apr 2026 - 22:19

42

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Why $|<Tz,z>| \le\sup\limits_{\|u\|\le 1} |<Tu,u>| \|z\|^2$?

Published on 14 Apr 2026 - 10:25

276

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If $(x_i,y_i) , i=1,2,3$ does not satisfy a linear equation then it must satisfy a quadratic one

Published on 11 Apr 2026 - 9:17

158

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What is the logical justification for proof by contradiction?

Published on 12 Apr 2026 - 5:25

6.9k

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Derivation of Variance of Discrete Uniform Distribution over custom interval

Published on 14 Apr 2026 - 23:37

List Question

$\ker\phi$ closed implies $\phi$ bounded

Prove a number is irrational (explanation)

Hurwitz Constant - Proof of Lemma 6.1.1. in Esmonde and Murty's Problems in Algebraic Number Theory

Arguing a heuristic solution to a linear PDE, in weak formulation

Is this the right way to prove finite cartesian product of compact sets is compact

$.99999...=1$: What is the proof that we can multiply an infinite series by something to shift it?

Proof of definite integral

What is wrong with this proof?2

Is something arbitrary if it is a function of something else?

Proof on gcd divisor

Prove/Disprove: When $A,B,C$ are symmetric matrices, the transpose of $ABC$ is $CBA$

Why $|<Tz,z>| \le\sup\limits_{\|u\|\le 1} |<Tu,u>| \|z\|^2$?

If $(x_i,y_i) , i=1,2,3$ does not satisfy a linear equation then it must satisfy a quadratic one

What is the logical justification for proof by contradiction?

Derivation of Variance of Discrete Uniform Distribution over custom interval

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