Results 31 to 40 of about 29,766 (132)

Geodesics of Finsler Hayward black hole surrounded by quintessence

open access: yesEuropean Physical Journal C: Particles and Fields
This research paper delves into examining the Hayward black hole structure surrounded by quintessence within the framework of Finsler geometry. Our focus centers on the Finsler metric tensor development for black holes.
B. R. Yashwanth   +3 more
doaj   +1 more source

Ground-state Riemannian metric, cyclic quantum distance, and the quantum criticality in an inhomogeneous Ising spin chain

open access: yes, 2014
6 pages, 5 ...
Ma, Yu-Quan   +4 more
openaire   +2 more sources

A short survey on biharmonic maps between Riemannian manifolds [PDF]

open access: yes, 2005
In this short survey we report on the theory of biharmonic maps between Riemannian manifolds.Comment: 20 ...
C. Oniciuc, Revista De La, S. Montaldo
core   +1 more source

Concerning the existence of Einstein and Ricci soliton metrics on solvable Lie groups

open access: yes, 2010
In this work we investigate solvable and nilpotent Lie groups with special metrics. The metrics of interest are left-invariant Einstein and algebraic Ricci soliton metrics.
Alekseevskiĭ   +15 more
core   +1 more source

On conformally flat critical Riemannian metrics for a curvature functional

open access: yesProceedings of the Japan Academy, Series A, Mathematical Sciences, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Density‐Valued ARMA Models by Spline Mixtures

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT This paper proposes a novel framework for modeling time series of probability density functions by extending autoregressive moving average (ARMA) models to density‐valued data. The method is based on a transformation approach, wherein each density function on a compact domain [0,1]d$$ {\left[0,1\right]}^d $$ is approximated by a B‐spline ...
Yasumasa Matsuda, Rei Iwafuchi
wiley   +1 more source

Permanence of metric fractals

open access: yesElectronic Journal of Differential Equations, 2007
The paper studies energy functionals on quasimetric spaces, defined by quadratic measure-valued Lagrangeans. This general model of medium, known as metric fractals, includes nested fractals and sub-Riemannian manifolds.
Kyril Tintarev
doaj  

Betti numbers of random nodal sets of elliptic pseudo-differential operators [PDF]

open access: yes, 2014
Given an elliptic self-adjoint pseudo-differential operator $P$ bounded from below, acting on the sections of a Riemannian line bundle over a smooth closed manifold $M$ equipped with some Lebesgue measure, we estimate from above, as $L$ grows to infinity,
Gayet, Damien, Welschinger, Jean-Yves
core  

An extended definition of Anosov representation for relatively hyperbolic groups

open access: yesJournal of Topology, Volume 19, Issue 2, June 2026.
Abstract We define a new family of discrete representations of relatively hyperbolic groups which unifies many existing definitions and examples of geometrically finite behavior in higher rank. The definition includes the relative Anosov representations defined by Kapovich–Leeb and Zhu, and Zhu–Zimmer, as well as holonomy representations of various ...
Theodore Weisman
wiley   +1 more source

On critical Riemannian metrics for a curvature functional on 3-manifolds

open access: yesProceedings of the Japan Academy, Series A, Mathematical Sciences, 2002
One approach to geometrization problems in 3-manifolds \(M\) is to consider all Riemannian metrics \({\mathcal M}(M)\) on \(M\), to define a functional \(F: {\mathcal M}(M)\to\mathbb R\), and to pick out nice metrics on \(M\) as critical points of the functional. There are difficulties in the procedure: (1) Existence Theorems.
openaire   +2 more sources

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