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New copulas, based on perturbation theory, are introduced to clarify a \emph{symmetrization} procedure for asymmetric copulas. We give also some properties of the \emph{symmetrized} copula. Finally, we examine families of copulas with a…

Statistics Theory · Mathematics 2021-06-29 Mohamed El Maazouz , Ahmed Sani

We construct an isometric embedding of a bounded set in a Euclidean space into the Gromov-Hausdorff space. In particular, we can embed a bounded and connected Riemannian manifold into the Gromov-Hausdorff space by a bilipschitz map.

Metric Geometry · Mathematics 2024-10-25 Takuma Byakuno

In this paper we prove a criterion for plurisubharmonic functions in terms of integral mean by complex ellipsoids. Moreover, by using the criterion we prove an analogue of Blaschke-Privalov theorem for plurisubharmonic functions.

Complex Variables · Mathematics 2021-05-25 Karim Rakhimov , Shomurod Shopulatov

We introduce the natural notion of (p,q)-harmonic morphisms between Riemannian manifolds. This unifies several theories that have been studied during the last decades. We then study the special case when the maps involved are…

Differential Geometry · Mathematics 2021-04-05 Elsa Ghandour , Sigmundur Gudmundsson

In this paper, we give an explicit second variation formula for a biharmonic hypersurface in a Riamannian manifold similar to that of a minimal hypersurface. We then use the second variation formula to compute the stability index of the…

Differential Geometry · Mathematics 2020-02-12 Ye-Lin Ou

We construct new invariants of equivariant birational isomorphisms taking values in equivariant Burnside groups.

Algebraic Geometry · Mathematics 2022-08-12 Andrew Kresch , Yuri Tschinkel

We characterize general pseudo-harmonic morphisms from a Riemannian manifold to a Hermitian manifold as pseudo horizontally weakly conformal maps with an additional property. We study to what extent we can (locally) describe these…

Differential Geometry · Mathematics 2007-12-18 Radu Slobodeanu

We introduce filtered cohomologies of differential forms on symplectic manifolds. They generalize and include the cohomologies discussed in Paper I and II as a subset. The filtered cohomologies are finite-dimensional and can be associated…

Symplectic Geometry · Mathematics 2014-05-06 Chung-Jun Tsai , Li-Sheng Tseng , Shing-Tung Yau

In this work, we extend the concepts of $p$-biharmonic maps and $p$-biharmonic hypersurfaces to provide a broader characterization of $(p,q)$-harmonic hypersurfaces and $(p,q)$-harmonic curves in Riemannian manifolds, including Einstein…

Differential Geometry · Mathematics 2026-03-26 Moustafa Tadj , Ahmed Mohammed Cherif , Fethi Latti

We show that the use of generalized multivariable forms of Hermite polynomials provide an useful tool for the evaluation of families of elliptic type integrals often encountered in electrostatic and electrodynamics

Mathematical Physics · Physics 2009-11-12 D. Babusci , G. Dattoli

We establish the leafwise intersection property for closed, coisotropic submanifolds in an exact symplectic manifold satisfying natural additional assumptions.

Symplectic Geometry · Mathematics 2009-05-27 Basak Z. Gurel

Harmonicity of holomorphic maps between various subclasses of almost contact metric manifolds is discussed. Consequently, some new results are obtained. Also some known results are recovered, some of them are generalized and some of them…

Differential Geometry · Mathematics 2023-02-27 Sadettin Erdem

Given an integral symplectic manifold, we construct a family of "coherent state" maps into complex projective space. The maps are built from sections of the tensor powers of a hermitian line bundle whose curvature is a multiple of the…

Differential Geometry · Mathematics 2007-05-23 David Borthwick , Alejandro Uribe

We show that a topological symplectic manifold has a canonically associated bi-Lipschitz structure. As a corollary, we obtain the first examples of non-existence and non-uniqueness for topological symplectic structures. Our arguments hold…

Symplectic Geometry · Mathematics 2026-03-10 Dan Cristofaro-Gardiner , Boyu Zhang

We construct a number of topologically trivial but smoothly non-trivial families of embeddings of 3-manifolds in 4-manifolds. These include embeddings of homology spheres in $S^4$ that are not isotopic but have diffeomorphic complements,…

Geometric Topology · Mathematics 2025-03-14 Dave Auckly , Daniel Ruberman

We describe a collection of constructions which illustrate a panoply of ``exotic'' smooth 4-manifolds.

Geometric Topology · Mathematics 2007-05-23 Ronald Fintushel , Ronald J. Stern

This note introduces the construction of relational symplectic groupoids as a way to integrate every Poisson manifold. Examples are provided and the equivalence, in the integrable case, with the usual notion of symplectic groupoid is…

Symplectic Geometry · Mathematics 2015-05-05 Alberto S. Cattaneo , Ivan Contreras

A Lie group $G$ endowed with a left invariant Riemannian metric $g$ is called Riemannian Lie group. Harmonic and biharmonic maps between Riemannian manifolds is an important area of investigation. In this paper, we study different aspects…

Differential Geometry · Mathematics 2014-12-17 Mohamed Boucetta , Seddik Ouakkas

In this paper we prove a compactness theorem for a sequence of harmonic maps which are defined on a converging sequence of Riemannian manifolds.

Differential Geometry · Mathematics 2014-12-02 Zahra Sinaei

We consider immersions of a Riemann surface into a manifold with $G_2$-holonomy and give criteria for them to be conformal and harmonic, in terms of an associated Gauss map.

Differential Geometry · Mathematics 2010-11-16 Andrew Clarke
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