Manoel, Míriam and Stewart, Ian, 1945-. (2000) The classification of bifurcations with hidden symmetries. Proceedings of the London Mathematical Society , Vol.80 (No.1). pp. 198-234. ISSN 0024-6115

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Abstract

We set up a singularity-theoretic framework for classifying one-parameter steady-state bifurcations with hidden symmetries. This framework also permits a non-trivial linearization at the bifurcation point. Many problems can be reduced to this situation; for instance, the bifurcation of steady or periodic solutions to certain elliptic partial differential equations with Neumann or Dirichlet boundary conditions. We formulate an appropriate equivalence relation with its associated tangent spaces, so that the usual methods of singularity theory become applicable. We also present an alternative method for computing those matrix-valued germs that appear in the equivalence relations employed in the classification of equivariant bifurcation problems. This result is motivated by hidden symmetries appearing in a class of partial differential equations defined on an N-dimensional rectangle under Neumann boundary conditions.

Item Type:	Journal Article
Subjects:	Q Science > QA Mathematics
Divisions:	Faculty of Science > Mathematics
Library of Congress Subject Headings (LCSH):	Bifurcation theory, Differential equations, Nonlinear -- Numerical solutions, Singularities (Mathematics), Geometry, Algebraic, Manifolds (Mathematics), Symmetry (Mathematics)
Journal or Publication Title:	Proceedings of the London Mathematical Society
Publisher:	Cambridge University Press
ISSN:	0024-6115
Date:	January 2000
Volume:	Vol.80
Number:	No.1
Page Range:	pp. 198-234
Identification Number:	10.1112/S0024611500012156
Status:	Peer Reviewed
Access rights to Published version:	Open Access
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URI:	http://wrap.warwick.ac.uk/id/eprint/836

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