theorem :: BVFUNC_3:35

for Y being non empty set
for G being Subset of (PARTITIONS Y)
for a, b, c being Function of Y,BOOLEAN
for PA being a_partition of Y holds (All ((b 'imp' c),PA,G)) '&' (All ((a 'imp' ('not' c)),PA,G)) '<' All ((a 'imp' ('not' b)),PA,G)