2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79592Short, bijective proofs of identities for multisets of `hook pairs' (arm-leg pairs) of the cells of certain diagrams are given. These hook pair identities were originally found by Regev.13 pages, AmS-TeXCombinatorics05A15 05A19 05E10text