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Title: Discrete Dirac reduction of implicit Lagrangian systems with abelian symmetry groups
This paper develops the theory of discrete Dirac reduction of discrete Lagrange–Dirac systems with an abelian symmetry group acting on the configuration space. We begin with the linear theory and, then, we extend it to the nonlinear setting using retraction compatible charts. We consider the reduction of both the discrete Dirac structure and the discrete Lagrange–Pontryagin principle, and show that they both lead to the same discrete Lagrange–Poincaré–Dirac equations. The coordinatization of the discrete reduced spaces relies on the notion of discrete connections on principal bundles. At last, we demonstrate the method obtained by applying it to a charged particle in a magnetic field, and to the double spherical pendulum.  more » « less
Award ID(s):
1813635
PAR ID:
10494421
Author(s) / Creator(s):
;
Publisher / Repository:
AIMS Press
Date Published:
Journal Name:
Journal of Geometric Mechanics
Volume:
15
Issue:
1
ISSN:
1941-4889
Page Range / eLocation ID:
319 to 356
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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