CENTER FOR APPLIED MATHEMATICS AND THEORETICAL PHYSICS
UNIVERZA V MARIBORU $\bullet$ UNIVERSITY OF MARIBOR
KREKOVA 2 $\bullet$ SI-2000 MARIBOR $\bullet$ SLOVENIA
Phone +(386) (2) 2355 350 and 2355 351 $\bullet$ Fax +(386) (2) 2355 360
Robnik@uni-mb.si $\bullet$ www.camtp.uni-mb.si
PROF.DR. MARKO ROBNIK, DIRECTOR

Seminarsko predavanje
Centra za uporabno matematiko in teoretično fiziko

Small-amplitude limit cycles of two types of symmetric Lienard systems

Professor Dr. Maoan Han

Department of Mathematics, Shanghai Normal University, P.R. China

Abstract: As we knew, Lienard equation and its generalized forms are classical and important models of nonlinear oscillators, and have been widely studied by mathematicians and scientists. The main problem considered by most people is the number of limit cycles. In this paper, two types of symmetric polynomial Lienard systems are investigated and the maximal number of limit cycles appearing in Hopf bifurcation is obtained by using some known bifurcation theorems with technical analysis. A global result is also presented.

Seminarsko predavanje bo v petek 4. avgusta 2006 ob 17:00 uri v seminarski sobi CAMTP, Krekova 2, pritličje. Vljudno vabljeni vsi zainteresirani, tudi študenti.

Prof.Dr. Marko Robnik
-- Direktor CAMTP --