This paper gives a brief exposition of several recent results obtained
by the authors concerning some classes of inverse relations, includin
g the general binomial-type inversions and two kinds of general Stirli
ng reciprocal transforms. Also described are some applications of the
related inversion techniques to combinatorics (including new proofs of
Rogers-Ramanujan identities and MacMahon's master theorem), interpola
tion methods and certain problems related to special polynomials and n
umber sequences.