3 ms·
http://en.wikipedia.org/wiki/Riesz%E2%80%93Fischer_theorem http://en.wikipedia.org/wiki/Riesz%E2%80%93Fischer_theorem
by mnl 14y ago
http://en.wikipedia.org/wiki/Riesz%E2%80%93Fischer_theorem http://en.wikipedia.org/wiki/Riesz%E2%80%93Fischer_theorem