List questions from proof-explanation

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$\lim_{x \to n\pi} \frac{M^{2}\cos(2Mx)}{\cos(2x)} = M^2$?

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Prove that center of circle and point of intersection of circle and x axis will have same X-coordinate.

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Theorem 9.9 - Tu's "An Introduction To Manifolds"

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Covering sequence of open subsets in a locally compact space

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Explaination of step in proof that If $d|a$ and $d|b$ and $\displaystyle\gcd(\frac{a}{d}, \frac{b}{d})=1$ then $\gcd(a,b)=d$

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Prove that a group of order 45 is necessarily abelian by Sylows' Theorems

Published on 15 Apr 2026 - 1:36

List Question

Permutation Diagram Proof??

Checking work on Proof by Contradiction?

Differentiability implies continuity (Linear Map)

Proving a five digit number is divisible by 3 if the sum of its digits is divisible by 3

$\lim_{x \to n\pi} \frac{M^{2}\cos(2Mx)}{\cos(2x)} = M^2$?

Questions about proof for metric space completion

Questions about the proof used in demonstrating the existence of a field extension

Prove that for all real numbers $a$ and $b$, if $0 < a < b$ then $0 < a^2 < b^2$

Berry-Esseen Theorems. Please help

Prove that center of circle and point of intersection of circle and x axis will have same X-coordinate.

Theorem 9.9 - Tu's "An Introduction To Manifolds"

Covering sequence of open subsets in a locally compact space

Baby Rudin 7.21: Explanation of proof

Explaination of step in proof that If $d|a$ and $d|b$ and $\displaystyle\gcd(\frac{a}{d}, \frac{b}{d})=1$ then $\gcd(a,b)=d$

Prove that a group of order 45 is necessarily abelian by Sylows' Theorems

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