theorem Th36: :: CQC_THE2:36

for A being QC-alphabet
for p, q being Element of CQC-WFF A
for x being bound_QC-variable of A holds
( (All (x,(p '&' q))) => ((All (x,p)) '&' (All (x,q))) is valid & ((All (x,p)) '&' (All (x,q))) => (All (x,(p '&' q))) is valid )