# American Institute of Mathematical Sciences

June  2004, 3(2): 161-173. doi: 10.3934/cpaa.2004.3.161

## Pitchfork and transcritical bifurcations in systems with homogeneous nonlinearities and an almost periodic time coefficient

 1 FB Mathematik, Johann Wolfgang Goethe Universität, Postfach 11 19 32, D-60054 Frankfurt a.M.

Received  March 2003 Revised  December 2003 Published  March 2004

The zero solution of a vector valued differential equation with an autonomous linear part and a homogeneous nonlinearity multiplied by an almost periodic function is shown to undergo pitchfork or transcritical bifurcations to small nontrivial almost periodic soutions as a leading simple real eigenvalue of the linear part crosses the imaginary axis.
Citation: P.E. Kloeden. Pitchfork and transcritical bifurcations in systems with homogeneous nonlinearities and an almost periodic time coefficient. Communications on Pure & Applied Analysis, 2004, 3 (2) : 161-173. doi: 10.3934/cpaa.2004.3.161
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