theorem Th22: :: BVFUNC14:22

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 <> B & B <> C & B <> D & B <> E holds
CompF (B,G) = ((A '/\' C) '/\' D) '/\' E