Hi. 1) Does the Grand canonical partition function ##\Xi## behave in a similar fashion to the good old canonical partition function ##Z##? Do you calculate thermodynamical quantities (entropy, hemholtz free energy etc.) in similar fashions? 2) Is it possible for some kind soul here to explain the basic characteristics of the partition functions for: Microcanonical Ensemble Canonical Ensemble Grand Canonical Ensemble ? 3) Is it possible to extract ALL thermodynamical information about a system if you know its partition function? You just need to use the formulas, right? 4) What's up with each state in the microcanonical ensemble having equal probability to materialize? I don't get it.. thanks.