Partition function may refer to:
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Partition function (statistical mechanics)
In physics, a partition function describes the statistics, statistical properties of a system in thermodynamic equilibrium. Partition functions are function (mathematics), functions of the thermodynamic state function, state variables, such a ...
, a function used to derive thermodynamic properties
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Rotational partition function, partition function for the rotational modes of a molecule
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Vibrational partition function, partition function for the vibrational modes of a molecule
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Partition function (quantum field theory)
In quantum field theory, partition functions are generating functionals for correlation functions, making them key objects of study in the path integral formalism. They are the imaginary time versions of statistical mechanics partition functi ...
, partition function for quantum path integrals
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Partition function (mathematics)
The partition function or configuration integral, as used in probability theory, information theory and dynamical systems, is a generalization of the definition of a partition function in statistical mechanics. It is a special case of a normaliz ...
, generalization of the statistical mechanics concept
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Partition function (number theory)
In number theory, the partition function represents the number of possible partitions of a non-negative integer . For instance, because the integer 4 has the five partitions , , , , and .
No closed-form expression for the partition function i ...
, the number of possible partitions of an integer
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