List questions from fake-proofs

Published on 18 Mar 2015 - 6:39

14.7k

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Fake induction proofs

Published on 19 Mar 2015 - 0:36

185

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Is the set of vanishing $k$ derivatives of smooth functions in a null set dense in $W^{1,p}$?

Published on 26 Mar 2015 - 0:24

493

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What is wrong with this proof that $\text{card}(\mathcal{P}(\mathbb{N}))=\aleph_1$?

Published on 27 Mar 2015 - 8:57

172

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Proof subtraction is not forward stable

Published on 27 Mar 2015 - 17:57

2.2k

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What is wrong with this putative proof?

Published on 02 Apr 2015 - 20:48

321

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Fake proof: Equivalence of norms

Published on 07 Apr 2015 - 13:55

286

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$1+1=0$ What am I doing wrong???!

Published on 08 Apr 2015 - 14:25

1k

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An argument for "Brocard's problem has finite solution"

Published on 12 Apr 2015 - 16:47

99

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Same Expansion for Different Functions! What's Wrong?

Published on 23 Apr 2015 - 5:24

248

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Is $\sqrt{x^2} = (\sqrt x)^2$?

Published on 23 Apr 2015 - 19:02

1k

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Where does the proof of $\sqrt 2$ is irrational break down when trying to prove the same for $\sqrt 4$?

Published on 25 Apr 2015 - 23:40

78

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Check my logical argument for this proof.

Published on 02 May 2015 - 20:04

879

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Why is this proof of $i = -1$ wrong?

Published on 10 May 2015 - 15:14

383

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Mathematical Induction. Horses made me question my understanding

Published on 25 May 2015 - 20:22

List Question

E is countable $\longleftrightarrow$ there exist a surjection from $\mathbb{N}$ to E

Fake induction proofs

Is the set of vanishing $k$ derivatives of smooth functions in a null set dense in $W^{1,p}$?

What is wrong with this proof that $\text{card}(\mathcal{P}(\mathbb{N}))=\aleph_1$?

Proof subtraction is not forward stable

What is wrong with this putative proof?

Fake proof: Equivalence of norms

$1+1=0$ What am I doing wrong???!

An argument for "Brocard's problem has finite solution"

Same Expansion for Different Functions! What's Wrong?

Is $\sqrt{x^2} = (\sqrt x)^2$?

Where does the proof of $\sqrt 2$ is irrational break down when trying to prove the same for $\sqrt 4$?

Check my logical argument for this proof.

Why is this proof of $i = -1$ wrong?

Mathematical Induction. Horses made me question my understanding

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