The Uses of Twitter

A friend of mine is doubtful about the virtues of Twitter, not realised that it is a tool made serviceable by the user- here's someone who makes better use of it-

1. A subgroup N of G is normal if g^{-1}Ng = N for all g in G.about 15 hours ago via HootSuite
2. If 2^p - 1 is prime, 2^{p-1}(2^p - 1) is an even perfect number. Euclid, Prob IX.36.11:30 AM Apr 16th via HootSuite

Algebra Fact (AlgebraFact) on Twitter