2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60242We consider symplectic Floer homology in the lowest nontrivial dimension, that is to say, for area-preserving diffeomorphisms of surfaces. Particular attention is paid to the quantum cap product; we show that it distinguishes the trivial element of the mapping class group from any nontrivial one.11 pages, LatexSymplectic GeometryGeometric Topologytext