2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/64100Using a result of J-M. Bony, we prove the weak involutivity of truncated microsupports. More precisely, given a sheaf $F$ on a real manifold and an integer $k$, if two functions vanish on the truncated microsupport $Ss_k(F)$, then so does their Poisson bracket.9 pagesAlgebraic GeometrySymplectic Geometry35A27, 32C38text