List questions from proof-writing

Published on 17 Apr 2026 - 6:23

53

Views

Proof of boundedness for a sequence

Published on 12 Apr 2026 - 15:55

84

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Dependencies in 'epsilon of room'-style proofs

Published on 16 Apr 2026 - 5:59

377

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Disprove Big-O statement

Published on 10 Apr 2026 - 23:54

131

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Proving an element is a unit when the function is surjective and injective

Published on 11 Apr 2026 - 10:37

86

Views

Making proof rigorous that isometries of $\mathbb{R}^n$ are bijective using balls

Published on 12 Apr 2026 - 9:25

366

Views

Is there a method that can allow us to know how to prove theorems (number theory)?

Published on 13 Apr 2026 - 7:16

49

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Proving existence and computation of a function's limit

Published on 14 Apr 2026 - 23:03

47

Views

What notation should I use for a set matrices of different size?

Published on 11 Apr 2026 - 13:05

116

Views

Does any logarithmic function decreases faster than increases?

Published on 09 Apr 2026 - 4:36

60

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A question about showing how a product of closed sets in the product toplogy is closed .

Published on 12 Apr 2026 - 16:37

167

Views

a contradiction in my proof to show that T must be the discrete topology if $f:(X,T)\rightarrow (\Bbb R,T_{st})$, I dont understand .

Published on 14 Apr 2026 - 17:48

588

Views

Prove or disprove: if $10$ divides $n^{4}$, then $10$ divides $n$

Published on 16 Apr 2026 - 11:55

225

Views

How much makes $\sum\limits_{i=-\infty}^{\infty} \frac{1}{i2\pi+x}$?

Published on 13 Apr 2026 - 10:06

1k

Views

How to prove a Markov chain is irreducible in general?

Published on 12 Apr 2026 - 9:45

List Question

Relatively Open Subset, Proof

Proof of boundedness for a sequence

Dependencies in 'epsilon of room'-style proofs

Disprove Big-O statement

Proving an element is a unit when the function is surjective and injective

Making proof rigorous that isometries of $\mathbb{R}^n$ are bijective using balls

Is there a method that can allow us to know how to prove theorems (number theory)?

Proving existence and computation of a function's limit

What notation should I use for a set matrices of different size?

Does any logarithmic function decreases faster than increases?

A question about showing how a product of closed sets in the product toplogy is closed .

a contradiction in my proof to show that T must be the discrete topology if $f:(X,T)\rightarrow (\Bbb R,T_{st})$, I dont understand .

Prove or disprove: if $10$ divides $n^{4}$, then $10$ divides $n$

How much makes $\sum\limits_{i=-\infty}^{\infty} \frac{1}{i2\pi+x}$?

How to prove a Markov chain is irreducible in general?

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