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math.DG2018
The Classification Problem for 2-Forms in Four Variables
Jaime Muñoz Masqué, Luis Miguel Pozo Coronado
The notion of type of a differential 2-form in four variables is introduced and for 2-forms of type < 4, local normal models are given. If the type of a 2-form is 4, then the e…
math.DG2017
Invariants for the Lagrangian Equivalence Problem
Marco Castrillón López, Jaime Muñoz Masqué, Eugenia Rosado María
Let be a connected smooth manifold, let be the group automorphisms of the bundle , and let $q\colon J^1(\mathb…
math.DG2009
Non-Hamiltonian Actions and Lie-Algebra Cohomology of Vector Fields
Roberto Ferreiro Pérez, Jaime Muñoz Masqué
Two examples of -invariant closed two-forms obtained from forms on jet bundles, which does not admit equivariant moment maps are presented. The corresponding co…