Sentence 1: Extremal states are usually called extremal states . Note that a condition is a pure state if and only if it is convex in the pure state group .
Sentence 2: Extremal states are usually called pure states . Note that a state is a pure state if and only if it is extremal in the convex set of states .

Do these two sentences convey the same information?

OPTIONS:
- no;
- yes;
no