Microcanonical Ensemble (Clasical statistics):
Ensemble variables (One component system, 3-dimensional system, ... ):
Partition function
Q N V E = 1 h 3 N N ! ∫ ∫ d ( p ) 3 N d ( q ) 3 N δ ( H ( p , q ) − E ) . {\displaystyle Q_{NVE}={\frac {1}{h^{3N}N!}}\int \int d(p)^{3N}d(q)^{3N}\delta (H(p,q)-E).}
where:
... in construction ---