0
$\begingroup$

Let's say I have two substitutions given [a:=b] and [c:=d]. What are some conditions that hold for a,b,c,d ∈Σ* iff forall s∈Σ* s[a:=b][c:=d]=s[c:=d][a:=b]

Also you can assume that a,c≠𝜀 but you cannot assume so for b and d.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.