theorem Th30: :: ENTROPY1:30

for D being non empty set
for M being Matrix of D
for p being FinSequence of D * st len p = len M & p . 1 = M . 1 & ( for k being Nat st k >= 1 & k < len M holds
p . (k + 1) = (p . k) ^ (M . (k + 1)) ) holds
for i, j being Nat st i in dom p & j in dom p & i <= j holds
dom (p . i) c= dom (p . j)