theorem Th36: :: TWOSCOMP:36

for x, b being non pair set holds
( x in the carrier of (BitCompStr (x,b)) & b in the carrier of (BitCompStr (x,b)) & [<*x,b*>,xor2a] in the carrier of (BitCompStr (x,b)) & [<*x,b*>,and2a] in the carrier of (BitCompStr (x,b)) )