Maths.fun

Lemma: Every category can be unfaithfully embedded into ℝ². It just depends on how good you are at drawing with a chalk. 

(to all the topologists, prove the lemma before drawing every open sets as a circle)

The following page is based on the above lemma:

I also love playing chess, pokémon, puzzle games, and going on short coding adventures...visit π.fun.