© 2002 by London Mathematical Society
Bifurcation from Simple Eigenvalues and Eigenvalues of Geometric Multiplicity One
School of Mathematics and Statistics, University of Sydney N.S.W. 2006, Australia normd{at}maths.usyd.edu.au
Received 11 December 2000. Revision received 1 June 2001.
A counterexample has been constructed to show that a conjectured global solution structure for bifurcation of non-trivial solutions from a simple eigenvalue of the linearization at zero really can occur. In addition, new results and counterexamples have been obtained for bifurcation from an eigenvalue of geometric multiplicity 1 and odd algebraic multiplicity. 2000 Mathematics Subject Classification 58E07, 47J15, 37G10.