logic.spad line 520 [edit on github]
A domain for generalized Moebius functions of explicit subposets.
mf( evaluates the Moebius function pi, si)mf at pi and si
canonicalMoebiusFunction(pp) inverts the canonical zeta function
generalizedMoebiusFunction(pp, zeta) inverts the given zeta function
members(mf) returns the elements of the subposet
moebiusMatrix() returns the Moebius matrix