what a great "double" functional equation!
26:43
can you do the hardest problem from the European Mathematical Cup??
15:34
One of the coolest functional equations I have seen!
11:26
a 21 prime salute
10:10
what a nice functional equation!
20:55
DESTROYING a Digamma Integral
19:09
Un MONSTRUO absoluto de una integral
23:13
integer points on Mordell curves
18:01