theorem Th118: :: GLIB_006:114

for G2 being _Graph
for v1, v2 being Vertex of G2
for e being object
for G1 being addEdge of G2,v1,e,v2 st G2 is non-Dmulti & ( for e3 being object holds not e3 DJoins v1,v2,G2 ) holds
G1 is non-Dmulti