let R be Ring; :: thesis: for V being RightMod of R
for W being Submodule of V holds (0). V is Submodule of W
let V be RightMod of R; :: thesis: for W being Submodule of V holds (0). V is Submodule of W
let W be Submodule of V; :: thesis: (0). V is Submodule of W
(0). W = (0). V by Th36;
hence (0). V is Submodule of W ; :: thesis: verum