lambda

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co.combinatorics

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Small ideas that became big

Aug 15, 2020

55

The "square root" of a graph?

Mar 1, 2021

21

A necessary and sufficient condition for $(x_1,...,x_n)$ to be a permutation of $(1,...,n)$

Jul 16, 2019

17

Examples of back of envelope calculations leading to good intuition?

Nov 30, 2020

14

Is each squared finite group trivial?

Feb 19, 2021

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co.combinatorics

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generating-functions

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graph-theory

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permutations

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67

A better way to explain forcing?

Aug 20, 2020

48

Is each squared finite group trivial?

Feb 18, 2021

13

Looking for a combinatorial proof for a Catalan identity

Feb 6, 2021

12

Ordered Bell numbers

Jan 30, 2021

12

So after all, what is this thing about topos theory and non-binary truth?

Mar 12, 2021

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