2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/72676For a torus knot K, we bound the crosscap number c(K) in terms of the genus g(K) and crossing number n(K): c(K) \leq [(g(K)+9)/6] and c(K) \leq [(n(K) + 16)/12]. The (6n-2,3) torus knots show that these bounds are sharp.7 Pages, 0 figures Version 2 - corrected a typo: Clark showed c(K) \le 2g(K) + 1Geometric Topology57M25text