Unlabelled Structures
With unlabelled structures, an ordinary generating function (OGF) is used. The OGF of a sequence is defined as
Read more about this topic: Symbolic Combinatorics
Famous quotes containing the word structures:
“The philosopher believes that the value of his philosophy lies in its totality, in its structure: posterity discovers it in the stones with which he built and with which other structures are subsequently built that are frequently better—and so, in the fact that that structure can be demolished and yet still possess value as material.”
—Friedrich Nietzsche (1844–1900)