Sometimes people declare redundant axioms. Positivity is one of them.
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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.
Recursion vs Induction
Recursive thinking is inductive thinking. I've always struggled with recursion. Until I've understood how to really think about it.
