Permutation-equivariant quantum K-theory V. Toric $q$-hypergeometric functions

We first retell in the K-theoretic context the heuristics of $S^1$-equivariant Floer theory on loop spaces which gives rise to $D_q$-module structures, and in the case of toric manifolds, vector bundles, or super-bundles to their explicit $q$-hypergeometric solutions. Then, using the fixed point localization technique developed in Parts II–IV, we prove that these $q$-hypergeometric solutions represent K-theoretic Gromov-Witten invariants.