User Cardboard Box - MathOverflow Meta

Cardboard Box

Member for 12 years, 7 months
Last seen more than 2 years ago

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Oct 16, 2019
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Sep 24, 2014

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41

Examples of patterns that eventually fail

38

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

23

Every Transitive Permutation Group Has a Fixed Point Free Element

20

Why is it called commutative property?

13

Proving formula involving Euler's totient function