Can you change a sum by rearranging its numbers? --- The Riemann Series Theorem
Morphocular
Can somebody please ban infinity from math!?
So we won't have to deal with such outrageous outcomes?!
P.S. 3blue1brown together with Leios Labs organized a competition of "visual math" videos, if we can use such a name, and they made
a playlist of about 200+ video entries. Most of them are outstanding. This one was from that playlist.