Some highlights (as compared to Numeric package)

• Row vector = 1 x n matrix, col vector = n x 1 matrix
• Slicing like A[:,0], A[0,:] gives col and row vectors
• Assembles block matrices from submatrices
• A+B, A-B, A*B, A/B, A**n are as in linear algebra
• Matrix functions expm, sqrtm, ...
• Complex matrices behave correctly
• Allow both matrix and elementwise operations