Thursday, 24 July 2014

Divisible Modules

"Let M be an R-module where R is a PID. We say that M is divisible if for each nonzero a in R, aM = M."

Tuesday, 3 September 2013

"Let M be a compact and orientable Riemannian manifold. Then, the number of linearly independent real harmonic forms of degree p is equal to the pth Betti number of M."