14:04A short proof of quadratic reciprocity, as self-contained as I can...Joseph math music119 views·1 year ago
3:42For odd primes p, 2 is a quadratic residue of p if and only if p is congruent to 1 or -1 modulo 8.Joseph math music96 views·1 year ago
2:53There are less than 1.4 N ln N primes between N+1 and 2N a proof in less than 3 minutes!Joseph math music72 views·1 year ago
