your favorite topic

and math

Set theory

Everyone should learn basic set theory.

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Perhaps we should talk about finance a little here.

Zero sum game

A zero sum game is one where for every gain someone makes, someone must make a loss.

Fourier

Watch this video about Fourier transform

Divide a cake fairly among three or more

How do we divide a cake fairly among three or more

Welcome back

Happy new year, 2018!

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Post correspondence problem

The post correspondence problem is undecidable because ATM is undecidable.