from the IMO shortlist...
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This is always even??

Two from Africa!

Too hard for the IMO? Too easy?

The smallest such prime...

Tackling the Biggest Unsolved Problems in Math with 3Blue1Brown

Learn Algebra 1 and 2 in One Video

The Story of Information Theory: from Morse to Shannon to ENTROPY

General relativity from first principles – Adam Brown

A system of equations with the floor function.

The Greatest Unsolved Problem In Mathematics

This Is What the Start of a Crash Looks Like

a nice floor problem from the IMO long list.

EXTREME quintic equation! (very tiring)

A radical equation.

The Million Dollar Problem No One Can Solve

We're 99.9% sure this pattern is true, but no one can prove it

this equation will floor you | 2004 Uzbekistan Math Olympiad

mechanical light bulb from 1675

Solving the hardest integral on math stack exchange (cleo's monster integral)

