theorem :: VECTSP_2:36

for F being non degenerated almost_left_invertible Ring
for x being Scalar of F
for V being non empty right_complementable add-associative right_zeroed RightMod-like RightModStr over F
for v being Vector of V holds
( v * x = 0. V iff ( x = 0. F or v = 0. V ) )