User contributions for 109.193.148.7

27 February 2014

• 15:3515:35, 27 February 2014 diff hist +37 Legendre's three-square theorem →See also: Added reference to Lagrange

12 February 2014

• 14:1314:13, 12 February 2014 diff hist +35 Beltrami identity Added reference to the mathematician Eugenio Beltrami.