Results 71 to 80 of about 341 (179)
On properties of geodesic semilocal E-preinvex functions
Journal of Inequalities and Applications, 2018 The authors define a class of functions on Riemannian manifolds, which are called geodesic semilocal E-preinvex functions, as a generalization of geodesic semilocal E-convex and geodesic semi E-preinvex functions, and some of its properties are ...
Adem Kılıçman, Wedad Saleh
doaj +1 more source
G-STRUCTURES DEFINED ON PSEUDO-RIEMANNIAN MANIFOLDS [PDF]
Differential Geometry, 2009 Concepts and techniques from the theory of G-structures of higher order are applied to the study of certain structures (volume forms, conformal structures, linear connections and projective structures) defined on a pseudo-Riemanniann manifold. Several relationships between the structures involved have been investigated.
openaire +2 more sources
Pseudo-Riemannian manifolds with simple Jacobi operators
Journal of the Mathematical Society of Japan, 2002 A (pseudo-)Riemannian manifold \((M,g)\) is called Osserman if the eigenvalues of the Jacobi operator \(R_X\) depend only on the norm of \(X\), but in no other way on the vector \(X\) at \(p\in M\). The present paper defines special Osserman manifolds by assuming additional conditions on the eigenvalues and eigenspaces of \(R_X\).
BONOME, Agustin +4 more
openaire +2 more sources
On canonical 2F-planar mappings of the first type of pseudo-Riemannian spaces with f-structure
Pracì Mìžnarodnogo Geometričnogo CentruThe article is devoted to the basic questions of the theory of 2F-planar mappings of manifolds, which are endowed with a certain type affinor structure.
Irina Kurbatova, Nadiia Konovenko
doaj +1 more source
The Soliton-Ricci Flow with variable volume forms
Complex Manifolds, 2016 We introduce a flow of Riemannian metrics and positive volume forms over compact oriented manifolds whose formal limit is a shrinking Ricci soliton. The case of a fixed volume form has been considered in our previouswork.We still call this new flow, the ...
Pali Nefton
doaj +1 more source
Differentiable Manifolds and Geometric Structures
MathematicsThis editorial presents 26 research articles published in the Special Issue entitled Differentiable Manifolds and Geometric Structures of the MDPI Mathematics journal, which covers a wide range of topics particularly from the geometry of (pseudo ...
Adara M. Blaga
doaj +1 more source
Addendum to: Indefinite Kasparov Modules and Pseudo-Riemannian Manifolds [PDF]
Annales Henri Poincaré, 2019 Final version, 8 pages.
openaire +3 more sources
Geodesic B-Preinvex Functions and Multiobjective Optimization Problems on Riemannian Manifolds
Journal of Applied Mathematics, 2014 We introduce a class of functions called geodesic B-preinvex and geodesic B-invex functions on Riemannian manifolds and generalize the notions to the so-called geodesic quasi/pseudo B-preinvex and geodesic quasi/pseudo B-invex functions.
Sheng-lan Chen +2 more
doaj +1 more source
Holonomy algebras of Einstein pseudo-Riemannian manifolds
J. Lond. Math. Soc., 2012 final version accepted to Journal of the London Mathematical ...
openaire +2 more sources