let R be Ring; :: thesis: for V being RightMod of R
for L1, L2 being Linear_Combination of V holds Carrier (L1 - L2) c= (Carrier L1) \/ (Carrier L2)
let V be RightMod of R; :: thesis: for L1, L2 being Linear_Combination of V holds Carrier (L1 - L2) c= (Carrier L1) \/ (Carrier L2)
let L1, L2 be Linear_Combination of V; :: thesis: Carrier (L1 - L2) c= (Carrier L1) \/ (Carrier L2)
Carrier (L1 - L2) c= (Carrier L1) \/ (Carrier (- L2)) by Th37;
hence Carrier (L1 - L2) c= (Carrier L1) \/ (Carrier L2) by Th52; :: thesis: verum