Results 61 to 70 of about 6,334,604 (358)

On the Geometry of Three-dimensional Pseudo-Riemannian Homogeneous Spaces. II [PDF]

Известия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика, 2020
The problem of establishing links between the curvature and the topological structure of a manifold is one of the important problems of the geometry. In general, the purpose of the research of manifolds of various types is rather complicated.
Mozhey, Natal’ya Pavlovna
doaj   +1 more source

Finite Homogeneous Spaces

Rocky Mountain Journal of Mathematics, 1997
The authors prove that on a set with \(n>0\) elements there are up to homeomorphism \(\tau(n)\) homogeneous topologies. Here \(\tau(n)\) is the number of positive divisors of \(n\). They also prove that if \(X\) is finite and \(\tau\) is a connected homogeneous topology on \(X\) then \(\tau = \{\emptyset,X\}\).
Fora, Ali, Al-Bsoul, Adnan
openaire   +2 more sources

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

A Classification of Compact Cohomogeneity One Locally Conformal Kähler Manifolds

Mathematics
In this paper, we apply a result of the classification of a compact cohomogeneity one Riemannian manifold with a compact Lie group G to obtain a classification of compact cohomogeneity one locally conformal Kähler manifolds.
Daniel Guan
doaj   +1 more source

Clifford-Wolf homogeneous Finsler metrics on spheres [PDF]

, 2013
An isometry of a Finsler space is called Clifford-Wolf translation (CW-translation) if it moves all points the same distance. A Finsler space $(M, F)$ is called Clifford-Wolf homogeneous (CW-homogeneous) if for any $x, y\in M$ there is a CW-translation $\
Deng, Shaoqiang, Xu, Ming
core  

Small BGK waves and nonlinear Landau damping

, 2010
Consider 1D Vlasov-poisson system with a fixed ion background and periodic condition on the space variable. First, we show that for general homogeneous equilibria, within any small neighborhood in the Sobolev space W^{s,p} (p>1 ...
A. Gizzo, A.J. Klimas, C. Lancellotti, Chongchun Zeng, D. Bohm, E. Caglioti, E.M. Stein, F. Valentini, G. Backus, G. Manfredi, H. Triebel, H. Weitzner, H.J. Hwang, I. Bernstein, I.B. Bernstein, J.P. Holloway, J.R. Danielson, K. Case, L. Demeio, L. Demeio, L. Landau, L. Muschietti, L. Tartar, M. Brunetti, M.B. Isichenko, M.L. Buchanan, M.L. Buchanan, M.V. Medvedev, N. Kampen van, O. Penrose, P. Degond, R. Glassey, R. Glassey, R.A. Adams, R.S. Strichartz, T. Armstrong, T. O’Neil, T. Zhou, V.L. Krasovsky, W.McF. Orr, Y. Guo, Z. Lin, Z. Lin, Z. Lin, Zhiwu Lin   +44 more
core   +1 more source

Noncommutative fields and actions of twisted Poincare algebra [PDF]

, 2007
Within the context of the twisted Poincar\'e algebra, there exists no noncommutative analogue of the Minkowski space interpreted as the homogeneous space of the Poincar\'e group quotiented by the Lorentz group.
A. Tureanu, Chaichian M., Chari V., Connes A., Drinfeld V. G., Drinfeld V. G., M. Chaichian, P. P. Kulish, R. B. Zhang, Schweber S. S., Sweedler M. E., Weinberg S., Xiao Zhang   +12 more
core   +2 more sources

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

The regularity criterion for weak solutions to the n-dimensional Boussinesq system

Boundary Value Problems, 2017
We consider the Boussinesq system in the homogeneous spaces of degree −1. To narrow the gap for the existence of small regular solutions in B ˙ ∞ , ∞ − 1 ( R n ) $\dot{B}^{-1}_{\infty,\infty}(\mathbb{R}^{n})$ , the biggest homogeneous space of degree −1 ...
Xiaona Cui
doaj   +1 more source