Results 51 to 60 of about 5,722,301 (356)
Strictly positive definite kernels on compact two-point homogeneous spaces
, 2016 We present a necessary and sufficient condition for the strict positive definiteness of a real, continuous, isotropic and positive definite kernel on a compact two-point homogeneous space. The characterization is achieved using special limit formulas for
V. S. Barbosa, V. Menegatto
semanticscholar +1 more source
Fuzzy Rule-Based Domain Adaptation in Homogeneous and Heterogeneous Spaces
IEEE transactions on fuzzy systems, 2019 Domain adaptation aims to leverage knowledge acquired from a related domain (called a source domain) to improve the efficiency of completing a prediction task (classification or regression) in the current domain (called the target domain), which has a ...
Hua Zuo +3 more
semanticscholar +1 more source
Compact Riemannian Manifolds with Homogeneous Geodesics
Symmetry, Integrability and Geometry: Methods and Applications, 2009 A homogeneous Riemannian space (M = G/H,g) is called a geodesic orbit space (shortly, GO-space) if any geodesic is an orbit of one-parameter subgroup of the isometry group G. We study the structure of compact GO-spaces and give some sufficient conditions
Dmitrii V. Alekseevsky +1 more
doaj +1 more source
Maximal function characterizations for new local Hardy-type spaces on spaces of homogeneous type [PDF]
Transactions of the American Mathematical Society, 2016 Let X X be a space of homogeneous type and let L \mathfrak {L} be a nonnegative self-adjoint operator on L 2 ( X ) L^2(X) enjoying Gaussian estimates. The main aim of this paper is twofold. Firstly, we prove (
T. A. Bui, X. Duong, Fu Ken Ly
semanticscholar +1 more source
Homogeneous geodesics in homogeneous Finsler spaces
, 2007 In this paper, we study homogeneous geodesics in homogeneous Finsler spaces. We first give a simple criterion that characterizes geodesic vectors. We show that the geodesics on a Lie group, relative to a bi-invariant Finsler metric, are the cosets of the
Arnold +14 more
core +2 more sources
Metric Entropy of Homogeneous Spaces
, 1997 For a (compact) subset $K$ of a metric space and $\varepsilon > 0$, the {\em covering number} $N(K , \varepsilon )$ is defined as the smallest number of balls of radius $\varepsilon$ whose union covers $K$.
Szarek, Stanislaw J.
core +3 more sources
Weingarten integration over noncommutative homogeneous spaces [PDF]
, 2017 We discuss an extension of the Weingarten formula, to the case of noncommutative homogeneous spaces, under suitable "easiness" assumptions. The spaces that we consider are noncommutative algebraic manifolds, generalizing the spaces of type $X=G/H\subset ...
Banica, Teodor
core +4 more sources
Sigma-models with complex homogeneous target spaces
EPJ Web of Conferences, 2016 We review the recently proposed class of σ-models with complex homogeneous target spaces, whose equations of motion admit zero-curvature representations.
Bykov Dmitri
doaj +1 more source
Reductive homogeneous spaces and nonassociative algebras [PDF]
, 2019 The purpose of these survey notes is to give a presentation of a classical theorem of Nomizu that relates the invariant affine connections on reductive homogeneous spaces and nonassociative algebras.Comment: 28 pages.
Elduque, Alberto
core +5 more sources
More on the cardinality of a topological space
Applied General Topology, 2018 In this paper we continue to investigate the impact that various separation axioms and covering properties have onto the cardinality of topological spaces. Many authors have been working in that field.
M. Bonanzinga +3 more
doaj +1 more source