Periodic solutions of arbitrary period to semilinear partial differential equations of Zabusky or Boussinesq type are obtained. More generally, for a linear differential operator A ( y , a ) , the equation A ( y , a)u = ( -l)lYlas,f(y, Pu), y = (t, x) E Rk x G is studied, where homogeneous boundary
Periodic Solutions for Non-linear Equations of Structured Populations
β Scribed by Stefano Bertoni
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 216 KB
- Volume
- 220
- Category
- Article
- ISSN
- 0022-247X
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β¦ Synopsis
We show the existence of non-trivial periodic solutions for a class of non-linear equations, model of age-structured populations. To this aim we use the theory of Centre Manifold for a class of abstract differential equations introduced by Desch and Schappacher, and show that a Hopf Bifurcation Theorem can be proved for this class of equations. Finally, we consider some special cases, and present an algorithm for the determination of the type of bifurcation, and show that in the considered cases the bifurcation is always supercritical.
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