|Nice Question||Question score of 10 or more. This badge can be awarded multiple times.|
Kasper earned this badge 4 times
apr 26 at 20:00About Euclid's Elements and modern video games
apr 20 at 20:21Does mathematics require axioms?
feb 27 at 21:59What is symmetric about the symmetric group? [duplicate]
dec 20 at 23:34Proof by contradiction vs Prove the contrapositive