let V be ComplexLinearSpace; :: thesis: for W1, W2 being strict Subspace of V
for C1 being Coset of W1
for C2 being Coset of W2 st C1 = C2 holds
W1 = W2
let W1, W2 be strict Subspace of V; :: thesis: for C1 being Coset of W1
for C2 being Coset of W2 st C1 = C2 holds
W1 = W2
let C1 be Coset of W1; :: thesis: for C2 being Coset of W2 st C1 = C2 holds
W1 = W2
let C2 be Coset of W2; :: thesis: ( C1 = C2 implies W1 = W2 )
( ex v1 being VECTOR of V st C1 = v1 + W1 & ex v2 being VECTOR of V st C2 = v2 + W2 ) by Def12;
hence ( C1 = C2 implies W1 = W2 ) by Th88; :: thesis: verum