An instance of Species
for cycle index series. For details on
cycle index series, see "Combinatorial Species and Tree-Like
Structures", chapter 1.
- zToEGF :: CycleIndex -> EGF
- zToGF :: CycleIndex -> GF
Documentation
zToEGF :: CycleIndex -> EGFSource
Convert a cycle index series to an exponential generating function: F(x) = Z_F(x,0,0,0,...).
zToGF :: CycleIndex -> GFSource
Convert a cycle index series to an ordinary generating function: F~(x) = Z_F(x,x^2,x^3,...).