Portugaliae Mathematica   EMIS ELibM Electronic Journals PORTUGALIAE
MATHEMATICA
Vol. 57, No. 3, pp. 259-271 (2000)

Previous Article

Next Article

Contents of this Issue

Other Issues

ELibM Journals

ELibM Home

EMIS Home

 		 

Forbidden Periods in Delay Differential Equations

L.A.V. Carvalho, L.A.C. Ladeira and M. Martelli

Departamento de Matemática,
UEM, PR - BRAZIL
Instituto de Ciências Matemáticas de S\ ao Carlos,
USP, SP - BRAZIL
Harvey Mudd College, California State University-Fullerton,
Pomona College - USA

Abstract: We study the one-parameter family of scalar differential-difference equations
$$ x'(t)=f(\alpha,x(t),x(t-1)), $$
and establish some results on the period of periodic solutions and its relations with the parameter $\alpha$.

Keywords: Functional differential equations; Wright's equation; periodic solutions; period; Lipschitz constant.

Classification (MSC2000): 34K15, 34K20.

Full text of the article:

Electronic version published on: 31 Jan 2003. This page was last modified: 27 Nov 2007.

© 2000 Sociedade Portuguesa de Matemática
© 2000–2007 ELibM and FIZ Karlsruhe / Zentralblatt MATH for the EMIS Electronic Edition