Extended Bressoud-Wei and Koike skew Schur function identities

Our recent paper [5] provides proofs of certain generalizations of two classical determinantal identities, one by Bressoud and Wei [1] and one by Koike [8]. Both of these identities are extensions of the Jacobi-Trudi identity, an identity that provides a determinantal representation of the Schur function. Here we provide lattice path proofs of these generalized idetities. We give the barest of background details and notation, referring the reader instead to our earlier paper [5], and to Macdonald [10] or Stanley [11] for general symmetric function background knowledge.