Variational construction of homoclinics and chaos in presence of a saddle-saddle equilibrium
Variational method and conjugacy criteria for half-linear differential equations
We establish new conjugacy criteria for half-linear second order differential equations. These criteria are based on the relationship between conjugacy of the investigated equation and nonpositivity of the associated energy functional.
Verallgemeinerungen eines Satzes von Leighton über die Oszillation selbstadjungierter Differentialgleichungen
Vergleichssatz für die Lösungen linearer Differential-Ungleichungen
Vergleichssätze für Komplexe Lineare Differentialgleichungen 2. Ordnung
Versal deformations of -invariant 2-parameter families of planar vector fields
The paper deals with 2-parameter families of planar vector fields which are invariant under the group for q ≥ 3. The germs at z = 0 of such families are studied and versal families are found. We also give the phase portraits of the versal families.
Viscous profiles for traveling waves of scalar balance laws: The uniformly hyperbolic case.
Volume Filling Effect in Modelling Chemotaxis
The oriented movement of biological cells or organisms in response to a chemical gradient is called chemotaxis. The most interesting situation related to self-organization phenomenon takes place when the cells detect and response to a chemical which is secreted by themselves. Since pioneering works of Patlak (1953) and Keller and Segel (1970) many particularized models have been proposed to describe the aggregation phase of this process. Most of...
V-монотонные системы и почти-периодические решения