List questions from fake-proofs

Published on 19 Jul 2015 - 11:55

758

Views

A Proof of a False Result: If $U$ is $T$-invariant, then so is $U^\perp$.

Published on 22 Jul 2015 - 8:50

333

Views

$C^0([0,1])$ is separable – or isn‘t it?

Published on 22 Jul 2015 - 12:54

639

Views

What is wrong with this proof of $0=1$?

Published on 26 Jul 2015 - 21:55

115

Views

What exactly is $\cap$-stable here?

Published on 26 Jul 2015 - 21:59

164

Views

Mistakes in $\lim_{a\to \infty}(a^2 - a) = - \frac{1}{6}$?

Published on 27 Jul 2015 - 19:49

2k

Views

Does square difference prove that 1 = 2?

Published on 28 Jul 2015 - 16:28

98

Views

Bogus set theory proof

Published on 30 Jul 2015 - 15:03

81

Views

Please explain what's wrong with the proof that every group element is its own inverse.

Published on 09 Aug 2015 - 22:59

313

Views

Debunking an elementary proof of FLT

Published on 12 Aug 2015 - 5:26

161

Views

What is the fallacy of this proof?

Published on 13 Aug 2015 - 9:18

4.3k

Views

Find the mistake of the inductive proof for $r^n=1$

Published on 17 Aug 2015 - 1:56

434

Views

Find a mistake type of math problems

Published on 18 Aug 2015 - 7:05

86.2k

Views

Where's the foolish part ? Prove that 0/0 = 2

Published on 27 Aug 2015 - 12:58

101

Views

"Proof" that $(2n)!$ is divisible by $2^n 5^{n-3}$ for $n\ge3$

Published on 01 Sep 2015 - 16:00

List Question

Finding the error in this induction proof

A Proof of a False Result: If $U$ is $T$-invariant, then so is $U^\perp$.

$C^0([0,1])$ is separable – or isn‘t it?

What is wrong with this proof of $0=1$?

What exactly is $\cap$-stable here?

Mistakes in $\lim_{a\to \infty}(a^2 - a) = - \frac{1}{6}$?

Does square difference prove that 1 = 2?

Bogus set theory proof

Please explain what's wrong with the proof that every group element is its own inverse.

Debunking an elementary proof of FLT

What is the fallacy of this proof?

Find the mistake of the inductive proof for $r^n=1$

Find a mistake type of math problems

Where's the foolish part ? Prove that 0/0 = 2

"Proof" that $(2n)!$ is divisible by $2^n 5^{n-3}$ for $n\ge3$

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