List questions from fake-proofs

Published on 30 Mar 2026 - 9:49

108

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Help understanding an incorrect "least counterexample" inductive proof.

Published on 21 Nov 2022 - 21:28

113

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If $f_n \to f$ and for every $n > 0$ $f_n$ is uniformly continuous then f is uniformly continuous. Where did my proof fail?

Published on 26 Feb 2026 - 15:44

58

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What's the true value of $\sqrt{(x ^ 2)}$ and ${({\sqrt{x}}) ^ 2}$

Published on 30 Nov 2022 - 11:11

54

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Does this proof method work and/or exist?

Published on 01 Dec 2022 - 14:25

41

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When does the reciprocal of a square root equal the square root of a reciprocal?

Published on 01 Dec 2022 - 20:31

91

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2013 IMO Shortlist A1 Sequences

Published on 02 Dec 2022 - 20:49

29

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Upper bound of difference of two discrete probability distributions

Published on 04 Dec 2022 - 14:09

32

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Complement of domain subset equals codomain complement?

Published on 15 Dec 2022 - 13:18

39

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Understanding the types of discontinuities admitted into limits

Published on 18 Dec 2022 - 2:22

79

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Can someone please explain how the proof below is wrong for $9=3$?

Published on 18 Dec 2022 - 19:11

44

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A weird problem with long division algorithm contradicting division algorithm of polynomials

Published on 21 Dec 2022 - 14:02

65

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Proving a basic property about Arithmetic Mean.

Published on 23 Dec 2022 - 10:18

60

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Is this substitution valid?

Published on 27 Mar 2026 - 8:48

199

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(Fake proof) How are axiom schemas not "set theory in sheep's clothing"?

Published on 08 Jan 2023 - 6:00

List Question

An argument against the logic of the halting problem proof

Help understanding an incorrect "least counterexample" inductive proof.

If $f_n \to f$ and for every $n > 0$ $f_n$ is uniformly continuous then f is uniformly continuous. Where did my proof fail?

What's the true value of $\sqrt{(x ^ 2)}$ and ${({\sqrt{x}}) ^ 2}$

Does this proof method work and/or exist?

When does the reciprocal of a square root equal the square root of a reciprocal?

2013 IMO Shortlist A1 Sequences

Upper bound of difference of two discrete probability distributions

Complement of domain subset equals codomain complement?

Understanding the types of discontinuities admitted into limits

Can someone please explain how the proof below is wrong for $9=3$?

A weird problem with long division algorithm contradicting division algorithm of polynomials

Proving a basic property about Arithmetic Mean.

Is this substitution valid?

(Fake proof) How are axiom schemas not "set theory in sheep's clothing"?

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