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This paper focuses on deriving several curvature inequalities involving the Ricci and scalar curvatures of the horizontal and vertical distributions in anti-invariant Riemannian submersions from quaternionic space forms onto Riemannian…

Differential Geometry · Mathematics 2025-07-10 Kirti Gupta , Punam Gupta , R. K. Gangele

In this paper, we give a proof of the DDVV conjecture which is a pointwise inequality involving the scalar curvature, the normal scalar curvature and the mean curvature on a submanifold of a real space form. Furthermore we solved the…

Differential Geometry · Mathematics 2009-06-27 Jianquan Ge , Zizhou Tang

In this paper we generalize the known DDVV-type inequalities for real (skew-)symmetric and complex (skew-)Hermitian matrices to arbitrary real, complex and quaternionic matrices. Inspired by the Erd\H{o}s-Mordell inequality, we establish…

Differential Geometry · Mathematics 2020-11-30 Jianquan Ge , FaGui Li , Yi Zhou

In this article, we establish Hineva inequality for different types of submanifolds of Quaternionic Space forms

Differential Geometry · Mathematics 2026-02-13 Idrees Fayaz Harry , Mehraj Ahmad Lone , Lokenath Ganguly

In this paper we extend DDVV-type inequalities involving the Frobenius norm of commutators from real symmetric and skew-symmetric matrices to Hermitian and skew-Hermitian matrices.

Differential Geometry · Mathematics 2017-04-25 Jianquan Ge , Song Xu , Hangyu You , Yi Zhou

In this paper, we will first derive a DDVV-type optimal inequality for real skew-symmetric matrices, then we apply it to establish a Simons-type integral inequality for Riemannian submersions with totally geodesic fibres and Yang-Mills…

Differential Geometry · Mathematics 2013-11-01 Jianquan Ge

We obtain generalized Wintgen inequalities for submanifolds in conformally flat manifolds. We give some applications for submanifolds in a Riemannian manifold of quasi-constant curvature. Equality cases are also considered.

Differential Geometry · Mathematics 2026-02-10 Cihan Özgür , Adara M. Blaga

This paper is dedicated to the local parametric classification of Wintgen ideal submanifolds in space forms. These submanifolds are characterized by the pointwise attainment of equality in the DDVV inequality, which relates the scalar…

Differential Geometry · Mathematics 2025-05-02 Marcos Dajczer , Theodoros Vlachos

In this paper, we give a survey on the history and recent developments on the DDVV-type inequalities.

Differential Geometry · Mathematics 2024-02-05 Jianquan Ge , Fagui Li , Zizhou Tang , Yi Zhou

In this paper, we establish several inequalities for different convex mappings that are connected with the Riemann-Liouville fractional integrals. Our results have some relationships with certain integral inequalities in the literature.

Classical Analysis and ODEs · Mathematics 2014-08-24 M. Emin Özdemir , ÇEtin Yildiz , Havva Kavurmaci

In this paper, we introduce bi-slant Riemannian maps from Riemannian manifolds to Kenmotsu manifolds, which are the natural generalizations of invariant, anti-invariant, semi-invariant, slant, semi-slant and hemi-slant Riemannian maps, with…

Differential Geometry · Mathematics 2024-09-04 Adeeba Zaidi , Gauree Shanker

We give a generalized curvature-dimension inequality connecting the geometry of sub-Riemannian manifolds with the properties of its sub-Laplacian. This inequality is valid on a large class of sub-Riemannian manifolds obtained from…

Differential Geometry · Mathematics 2015-07-30 Erlend Grong , Anton Thalmaier

We propose a generalization of the Witten-Dijkgraaf-Verlinde-Verlinde (WDVV) equation from ${\mathbb R}^n$ to an arbitrary Riemannian manifold. Its form is obtained by extending the relation of the WDVV equation with ${\cal N}{=}\,4$…

High Energy Physics - Theory · Physics 2017-11-22 Nikolay Kozyrev , Sergey Krivonos , Olaf Lechtenfeld , Armen Nersessian , Anton Sutulin

[1] investigates advanced connotations of Hardy and Rellich-type inequalities on complete noncompact Riemannian manifolds, delving on deriving inequalities that incorporate poignant weight functions. These inequalities prolongate classical…

Differential Geometry · Mathematics 2024-11-13 Shouvik Datta Choudhury

We present an extended version of Riemannian geometry suitable for the description of current formulations of double field theory (DFT). This framework is based on graded manifolds and it yields extended notions of symmetries, dynamical…

High Energy Physics - Theory · Physics 2018-07-03 Andreas Deser , Christian Saemann

We obtain a Landau -- Hadamard type inequality for mappings defined on the whole real axis and taking values in Riemannian manifolds. In terms of an auxiliary convex function, we find conditions under which the boundedness of covariant…

Classical Analysis and ODEs · Mathematics 2017-08-08 Igor Parasyuk

A class of solutions to the WDVV equations is provided by period matrices of hyperelliptic Riemann surfaces, with or without punctures. The equations themselves reflect associativity of explicitly described multiplicative algebra of…

High Energy Physics - Theory · Physics 2015-06-26 A. Marshakov , A. Mironov , A. Morozov

In this paper, we proved a special case of the DDVV Conjecture.

Differential Geometry · Mathematics 2008-10-31 Timothy Choi , Zhiqin Lu

In this paper, we propose \textit{general Chen's first inequality} for Riemannian maps between Riemannian manifolds and manifest its equality and sharpness via non-trivial examples. We also utilize this general inequality by establishing…

Differential Geometry · Mathematics 2026-01-28 Ravindra Singh , Kiran Meena , Kapish Chand Meena

We give a new proof of the existence of nontrivial quasimeromorphic mappings on a smooth Riemannian manifold, using solely the intrinsic geometry of the manifold.

Complex Variables · Mathematics 2010-05-12 Emil Saucan
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