Electronic Journal of Differential Equations,
Vol. 2005(2005), No. 133, pp. 1-10.

Title: Uniformly isochronous polynomial centers
       
Authors: Vladimir V. Ivanov (Sobolev Inst. of Math., Novosibirsk, Russia)
         Evgenii P. Volokitin (Sobolev Inst. of Math., Novosibirsk, Russia)

Abstract: 
 We study a specific family of uniformly isochronous polynomial
 systems. Our results permit us to solve a problem about centers of
 such systems. We consider the composition conjecture for uniformly
 isochronous polynomial systems.
 
Submitted April 14, 2005. Published November 25, 2005.
Math Subject Classifications: 34C05, 34C25.
Key Words: Center conditions; isochronous; commutative.