Agraïments: M.J.A. was partially supported by grants MTM2005-06098-C02-1. J.L.B. and M.F. were partially supported by grant FEDER(UE) MTM2008-05460
AbstractWe study the uniqueness of limit cycles (periodic solutions that are isolated in the set of ...
AbstractFor a class of polynomial non-autonomous differential equations of degree n, we use phase pl...
Neste trabalho realizamos um estudo sobre as equações do tipo dx dt = nå i=0 ai(t)xi; (A) onde ai 2 ...
Agraïments: J.L.B. and M.F. were partially supported by grant FEDER(UE) MTM2008-05460.We study the p...
Given p, q ∊ Z ≥ 2 with p ≠ q, we study generalized Abel differential equations (Equation presented)...
This paper devotes to the study of the classical Abel equation $\frac{dx}{dt}=g(t)x^{3}+f(t)x^{2}$, ...
Agraïments: FEDER-Junta Extremadura grant number GR10060We obtain a criterion for determining the st...
torres,pedro j:New results are proved on the maximum number of isolated T-periodic (limit cycles) o...
[eng] Periodic solutions, Abel equation, Alien limit cycles, Abelian integrals, Bifurcation', abstra...
AbstractWe consider the Abel equation x˙=A(t)x3+B(t)x2, where A(t) and B(t) are trigonometric polyno...
AbstractWe present various criteria for the non-existence of positive periodic solutions of generali...
For family $x'=(a_0+a_1\cos t+a_2 \sin t)|x|+b_0+b_1 \cos t+b_2 \sin t$, we solve three basic proble...
AbstractA solution of the Abel equation x˙=A(t)x3+B(t)x2 such that x(0)=x(1) is called a periodic or...
This paper deals with the problem of finding upper bounds on the number of periodic solutions of a ...
It is know that the non-autonomous differential equations dx/dt = a(t) + b(t)|x|, where a(t) and b(t...
AbstractWe study the uniqueness of limit cycles (periodic solutions that are isolated in the set of ...
AbstractFor a class of polynomial non-autonomous differential equations of degree n, we use phase pl...
Neste trabalho realizamos um estudo sobre as equações do tipo dx dt = nå i=0 ai(t)xi; (A) onde ai 2 ...
Agraïments: J.L.B. and M.F. were partially supported by grant FEDER(UE) MTM2008-05460.We study the p...
Given p, q ∊ Z ≥ 2 with p ≠ q, we study generalized Abel differential equations (Equation presented)...
This paper devotes to the study of the classical Abel equation $\frac{dx}{dt}=g(t)x^{3}+f(t)x^{2}$, ...
Agraïments: FEDER-Junta Extremadura grant number GR10060We obtain a criterion for determining the st...
torres,pedro j:New results are proved on the maximum number of isolated T-periodic (limit cycles) o...
[eng] Periodic solutions, Abel equation, Alien limit cycles, Abelian integrals, Bifurcation', abstra...
AbstractWe consider the Abel equation x˙=A(t)x3+B(t)x2, where A(t) and B(t) are trigonometric polyno...
AbstractWe present various criteria for the non-existence of positive periodic solutions of generali...
For family $x'=(a_0+a_1\cos t+a_2 \sin t)|x|+b_0+b_1 \cos t+b_2 \sin t$, we solve three basic proble...
AbstractA solution of the Abel equation x˙=A(t)x3+B(t)x2 such that x(0)=x(1) is called a periodic or...
This paper deals with the problem of finding upper bounds on the number of periodic solutions of a ...
It is know that the non-autonomous differential equations dx/dt = a(t) + b(t)|x|, where a(t) and b(t...
AbstractWe study the uniqueness of limit cycles (periodic solutions that are isolated in the set of ...
AbstractFor a class of polynomial non-autonomous differential equations of degree n, we use phase pl...
Neste trabalho realizamos um estudo sobre as equações do tipo dx dt = nå i=0 ai(t)xi; (A) onde ai 2 ...
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