Answer:
It seems like the text you provided is not entirely clear or may have some typographical errors. However, I'll try to provide some interpretation based on the context:
(i) "puhe a mixed strategy Nash equilibrium"
- It appears that there might be a typographical error in the word "puhe." It could be a typo or a mistranscription.
- "Mixed strategy Nash equilibrium" refers to a situation in game theory where players use a combination of different strategies with associated probabilities to achieve equilibrium.
(ii) "set of pure & mixed strategy SPHE different as identified in (1)?"
- It seems like this is asking whether the set of pure and mixed strategy subgame perfect equilibria (SPHE) is different from what was identified in (1).
(b) "2 pure strategies. strictly positive probability, it's called strictly mixed Sh"
- This might be referring to a scenario where there are two pure strategies being played with strictly positive probabilities, which would then be classified as a strictly mixed strategy Nash equilibrium.
In general, this text appears to be discussing concepts from game theory, particularly mixed and pure strategy Nash equilibria, subgame perfect equilibria, and the terminology associated with them. If you can provide more context or clarify the text further, I'd be happy to help you understand the concepts better.