theorem Th24: :: BVFUNC14:24

for Y being non empty set
for G being Subset of (PARTITIONS Y)
for A, B, C, D, E being a_partition of Y st G = {A,B,C,D,E} & A <> D & B <> D & C <> D & D <> E holds
CompF (D,G) = ((A '/\' B) '/\' C) '/\' E