easy question

Hey guys, so brand spankin new to boost and BLAS for that matter.  I just have a quick question, and ive tried to find a answer online, but it seems so trivial that its not on there.  

here it goes, how to i do simple matrix math operations once i have two matices...

ie, im tryin to multiply two matrices right now, i have two of them defined


matrix<double>m (3, 3)
matrix<double>n (3, 3)

what is m * n

i havnt done lin alg in a while but im pretty sure you can multiply two matrices w/ the same amount of rows and cols

thanks for you help guys