Closed forms and multi-moment maps

TY - UNPB

T1 - Closed forms and multi-moment maps

AU - Madsen, Thomas Bruun

AU - Swann, Andrew Francis

PY - 2011/11/4

Y1 - 2011/11/4

N2 - We extend the notion of multi-moment map to geometries defined by closed forms of arbitrary degree. We give fundamental existence and uniqueness results and discuss a number of essential examples, including geometries related to special holonomy. For forms of degree four, multi-moment maps are guaranteed to exist and are unique when the symmetry group is (3, 4)-trivial, meaning that the group is connected and the third and fourth Lie algebra Betti numbers vanish. We give a structural description of some classes of (3, 4)-trivial algebras and provide a number of examples.

AB - We extend the notion of multi-moment map to geometries defined by closed forms of arbitrary degree. We give fundamental existence and uniqueness results and discuss a number of essential examples, including geometries related to special holonomy. For forms of degree four, multi-moment maps are guaranteed to exist and are unique when the symmetry group is (3, 4)-trivial, meaning that the group is connected and the third and fourth Lie algebra Betti numbers vanish. We give a structural description of some classes of (3, 4)-trivial algebras and provide a number of examples.

M3 - Working paper

BT - Closed forms and multi-moment maps

PB - Department of Mathematics, Aarhus University

ER -