In this paper, we systematically explore the periodicity of some dynamic equations on time scales, which incorporate as special cases many population models (e.g., predator-prey systems and competition systems) in mathematical biology governed by differential equations and difference equations. Easi
Position of Periodic Solutions and Invariant Submanifolds in Structurally Stable and Polynomial Dynamical Systems
✍ Scribed by H. G. Bothe
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 616 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
✦ Synopsis
Introduction.
A system of autonomous ordinary differential equations can be regarded as a vector field on Rn or, more generally, on a differentiable manifold M . The integral curves or solutions are maximal differentiable curves in M whose tangent vectors coincide with the vectors of the field. By an orbit we mean the underlying point set of a solution which carries -if it is not a single point -the orientation given by increasing curve parameters. We shall always assume that manifolds and vector fields are smooth i.e. of differentiability class C". If the boundary Bd M of M is not empty we assume moreover that vector fields on M are transverse t o Bd M , i.e. for p p B d M the vector at p is not in the tangent space of Rd M at p . Under these assumptions solutions exist, and, if we consider M floating along these solutions, we get the corresponding flow or dynamical system @. More precisely, @ is defined as the (smooth) mapping @: D + M where
📜 SIMILAR VOLUMES
Raman spectra of the m s (uC-H) and m s (CuC) stretching modes as well as Raman spectra in the lattice region 15-200 cm À1 of phenylacetylene (PA) dissolved in benzene in homogeneous liquid solutions, undercooled liquid state, crystal, and glassy matrices as a function of concentration, temperature,