theorem Th27: :: ZMODUL02:27

for R being Ring
for V being LeftMod of R
for L1, L2 being Linear_Combination of V
for A being Subset of V st L1 is Linear_Combination of A & L2 is Linear_Combination of A holds
L1 + L2 is Linear_Combination of A by VECTSP_6:24;