def dotdiv(a, b): return mlarr(np.divide(a, b))
def dotmul(a, b): return mlarr(np.multiply(a, b))
def transpose(a): return mlarr(a.T)
def ctranspose(a): return mlarr(a.H)
def dotpow(a, b): return mlarr(np.power(a, b))