theorem Th39: :: MATRLIN:39

for K being Field
for V1, V2 being finite-dimensional VectSp of K
for f being Function of V1,V2
for b1 being OrdBasis of V1
for b2 being OrdBasis of V2 st len b1 > 0 holds
width (AutMt (f,b1,b2)) = len b2