Aaron Johnson, 07 Sep 2016 https://en.wikipedia.org/wiki/Euler%27s_four-square_identity https://en.wikipedia.org/wiki/Olinde_Rodrigues... https://en.wikiped…
Aaron Johnson, 01 Sep 2016 TOPOLOGICAL SYSTEMS? Quantum Hall Effect (fractional and non-fractional) Spin Hall Effect 2D and 3D ... TOPOLOGICAL SYSTEMS?Quant…