theorem Th25: :: AOFA_I00:25

for A being Euclidean preIfWhileAlgebra
for X being non empty countable set
for s being Element of Funcs (X,INT)
for T being Subset of (Funcs (X,INT))
for f being Euclidean ExecutionFunction of A, Funcs (X,INT),T
for x being Variable of f
for i being Integer holds
( (f . (s,(x := i))) . x = i & ( for z being Element of X st z <> x holds
(f . (s,(x := i))) . z = s . z ) )