Zobrazeno 1 - 10
of 315
pro vyhledávání: '"Xie Xiangdong"'
Publikováno v:
Open Mathematics, Vol 17, Iss 1, Pp 1503-1514 (2019)
In this paper, we consider an almost periodic commensal symbiosis model with nonlinear harvesting on time scales. We establish a criterion for the existence and uniformly asymptotic stability of unique positive almost periodic solution of the system.
Externí odkaz:
https://doaj.org/article/5ca9f1365c3d49879cf55968abbb2545
Publikováno v:
Open Mathematics, Vol 17, Iss 1, Pp 856-873 (2019)
The extinction property of a two species competitive stage-structured phytoplankton system with harvesting is studied in this paper. Several sets of sufficient conditions which ensure that one of the components will be driven to extinction are establ
Externí odkaz:
https://doaj.org/article/b3c57a7f5dcf4222a39d0a4e5b8b3f8e
Publikováno v:
Open Mathematics, Vol 17, Iss 1, Pp 120-130 (2019)
A discrete nonlinear almost periodic multispecies competitive system with delays and feedback controls is proposed and investigated. We obtain sufficient conditions to ensure the permanence of the system. Also, we establish a criterion for the existe
Externí odkaz:
https://doaj.org/article/f1ad9fcae7b54bcc9921e3c4fef6d2e9
We develop a general toolbox to study $W^{1,p}$ solutions of differential inclusions $\nabla u \in K$ for unbounded sets $K$. A key notion is the concept that a subset $K$ of the space $\mathbb{R}^{d \times m}$ of $d \times m$ matrices can be reduced
Externí odkaz:
http://arxiv.org/abs/2403.20265
Autor:
Medwid Mark, Xie Xiangdong
Publikováno v:
Analysis and Geometry in Metric Spaces, Vol 6, Iss 1, Pp 48-63 (2018)
Externí odkaz:
https://doaj.org/article/57b7ef08679041e7ba2f1883fafecc9a
We establish a Tukia-type theorem for uniform quasiconformal groups of a Carnot group. More generally we establish a fiber bundle version (or foliated version) of Tukia theorem for uniform quasiconformal groups of a nilpotent Lie group whose Lie alge
Externí odkaz:
http://arxiv.org/abs/2305.16149
In this paper we study uniform quasiconformal groups of Carnot-by-Carnot groups. We show that they can be conjugated into conformal groups provided the induced action on the space of distinct pairs is cocompact. Following the approach of Eskin-Fisher
Externí odkaz:
http://arxiv.org/abs/2304.12498
We consider Lie groups that are either Heintze groups or Sol-type groups, which generalize the three-dimensional Lie group SOL. We prove that all left-invariant Riemannian metrics on each such a Lie group are roughly similar via the identity. This al
Externí odkaz:
http://arxiv.org/abs/2208.06510
We consider Rumin's filtration on the de Rham complex of a Carnot group. Although Pansu pullback by a Sobolev map is filtration preserving, it need not be a chain mapping. Nonetheless, we show that Pansu pullback induces a mapping of the associated s
Externí odkaz:
http://arxiv.org/abs/2205.04302
Let $N\subset GL(n,R)$ be the group of upper triangular matrices with $1$s on the diagonal, equipped with the standard Carnot group structure. We show that quasiconformal homeomorphisms between open subsets of $N$, and more generally Sobolev mappings
Externí odkaz:
http://arxiv.org/abs/2201.01648