User Cardboard Box - MathOverflow Meta

Cardboard Box

Member for 10 years, 6 months

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Cardboard Box disapproves of StackExchange's unethical behaviour and bizarre attempts at social engineering.

Despite this, Cardboard Box will still probably answer questions on this site, because it is fun to do so.

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Supporter

Oct 16 '19
Autobiographer

Sep 24 '14

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Top network posts

39

Examples of patterns that eventually fail

31

Proof of a formula involving Euler's totient function: $\varphi (mn) = \varphi (m) \varphi (n) \cdot \frac{d}{\varphi (d)}$

21

Every Transitive Permutation Group Has a Fixed Point Free Element

19

Why is it called commutative property?

13

Proving formula involving Euler's totient function

13

Is $\sqrt{2}\in\mathbb{Q}(\sqrt[8]{3})$ or not?

11

Computing the number of nonisomorphic finite abelian groups of order $n$

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