theorem Th17: :: LOPBAN10:20

for X being RealNormSpace-Sequence
for Y being RealNormSpace
for f, h being VECTOR of (R_VectorSpace_of_MultilinearOperators (X,Y))
for a being Real holds
( h = a * f iff for x being VECTOR of (product X) holds h . x = a * (f . x) )