Well, I know that a microcanonical ensemble is a certain statistical ensemble, i.e., a set of all possible physical realizations of the microstate of a system that is consistent with a given macrostate. And I know that the postulate of equal probabilities is a priori principle used in statistics physics.
But in the literature, this two concepts are introduced usually in the same time in a non clear way, in wich turns to be difficult to undertand their relationship. It gives me the sensation that a microcanonical ensemble is just an ensemble that follows the postulate as if they were the same thing.
Can someone explain with more clarity their fundamental distinctions and their relationship with other kinds of statistical ensembles?