- #1
mr_coffee
- 1,629
- 1
Hello everyone I'm not sure if I'm understanidng this relation.
The question is:
Let S be the set of all strings in a's and b's. Define a relation T on S as folows:
FOr all s, t in S, s T t if and only if t = as. That is, t is the concatenation of a with s.
c. Is ba T aba?
I said yes, because aba is the concatneation of a with ba. Thus a + (ba)
e. Is abb T^-1 bba?
Well I know this means,
(abb T^-1 bba) if and only if (bba T abb)
now abb, can be broken into a + bb, but would that break the rules? like the order odes it have to be the same? So for this one i would say no.
f. Is abba T^-1 bba?
this means
bba T abba
I would say yes, becuase
abba is just a + bba
Any clarification if I'm understanding right?
Thanks!
The question is:
Let S be the set of all strings in a's and b's. Define a relation T on S as folows:
FOr all s, t in S, s T t if and only if t = as. That is, t is the concatenation of a with s.
c. Is ba T aba?
I said yes, because aba is the concatneation of a with ba. Thus a + (ba)
e. Is abb T^-1 bba?
Well I know this means,
(abb T^-1 bba) if and only if (bba T abb)
now abb, can be broken into a + bb, but would that break the rules? like the order odes it have to be the same? So for this one i would say no.
f. Is abba T^-1 bba?
this means
bba T abba
I would say yes, becuase
abba is just a + bba
Any clarification if I'm understanding right?
Thanks!