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Description | |||||
An interpretation of species as exponential generating functions, which count labelled structures. | |||||
Synopsis | |||||
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Documentation | |||||
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Extract the coefficients of an exponential generating function as a list of Integers. Since EGF is an instance of Species, the idea is that labelled can be applied directly to an expression of the Species DSL. In particular, labelled s !! n is the number of labelled s-structures on an underlying set of size n. For example: > take 10 $ labelled octopi [0,1,3,14,90,744,7560,91440,1285200,20603520] gives the number of labelled octopi on 0, 1, 2, 3, ... 9 elements. | |||||
Produced by Haddock version 2.6.0 |