Let's play football! Actually... Let's do math with football!
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Football Theorem
Positivity Is Redundant
Sometimes people declare redundant axioms. Positivity is one of them.
Chinese vs Chimese
Chinese is a fascinating language. What about Chimese, though?
The Best Proof For Countability of Q
I've never seen a proof this beautiful for the countability of Q.
BWM – Talking With An Expert
About my discussion with a professor in the final round of the Bundeswettbewerb Mathematik.
Pictures in Real Analysis
Do you want to understand math? Then draw a picture.
Stop Assuming Commutativity!
On redundant axioms such as commutativity.
