Micro Canonical Partition Function
A "Micro Canonical Partition Function" applies to a micro canonical ensemble, in which the system is allowed to exchange heat with the environment at fixed temperature, volume, and a fixed number of particles.
Applicable units are those of quantitykind:CanonicalPartitionFunction
http://en.wikipedia.org/wiki/Microcanonical_ensemble
http://en.wikipedia.org/wiki/Partition_function_(statistical_mechanics)#Grand_canonical_partition_function
A "Micro Canonical Partition Function" applies to a micro canonical ensemble, in which the system is allowed to exchange heat with the environment at fixed temperature, volume, and a fixed number of particles.
$\Omega = \sum_r 1$, where the sum is over all quantum states consistent with given energy. volume, external fields, and content.
http://www.iso.org/iso/catalogue_detail?csnumber=31894