Results 91 to 100 of about 28,626 (211)

On 4-dimensional Ricci-flat ALE manifolds

open access: yes, 2023
Several computation mistakes ...
openaire   +2 more sources

TWO-BODY PROBLEM IN KALUZA-KLEIN MODELS WITH RICCI-FLAT INTERNAL SPACES

open access: yesOdessa Astronomical Publications, 2013
We consider the dynamics of a two-body system in the model with additional spatial dimensions compactified on a Ricci-flat manifold. To define the gravitational field of a system and to construct its Lagrange function we use the weak-field approach.
Alexey Chopovsky
doaj   +1 more source

Construction of Ricci-type connections by reduction and induction [PDF]

open access: yes, 2003
Given the Euclidean space $\R^{2n+2}$ endowed with a constant symplectic structure and the standard flat connection, and given a polynomial of degree 2 on that space, Baguis and Cahen have defined a reduction procedure which yields a symplectic manifold ...
Cahen, Michel   +2 more
core  

A Bibliometric Analysis of Four Decades of Shareholder Activism Research

open access: yesCorporate Governance: An International Review, Volume 33, Issue 5, Page 946-984, September 2025.
ABSTRACT Research Questions/Issue In this bibliometric review of shareholder activism literature spanning 1983–2021, we pursue two objectives. Firstly, we investigate the degree of interdisciplinarity in the field, and second, we scrutinize publication trends, foundational knowledge, core topics, and emerging thematic trends, exploring the trajectory ...
Dionysia Katelouzou   +2 more
wiley   +1 more source

Hausdorff perturbations of Ricci-flat manifolds and the splitting theorem

open access: yesDuke Mathematical Journal, 1992
The author gives two counterexamples to 1) a topological splitting question for a normal neighborhood of a minimizing geodesic with nonnegative Ricci curvature (in contrast with the Cheeger-Gromoll global splitting theorem and the local Toponogov splitting in case of nonnegative sectional curvature).
openaire   +4 more sources

Designing Conservation Networks to Ensure Connectivity in a Changing Climate: Application to Spanish Forests

open access: yesDiversity and Distributions, Volume 31, Issue 9, September 2025.
ABSTRACT Aim Assess the potential effects of climate change on different forest habitats; and outline a climate‐wise conservation network to sustain forest connectivity under current and future climates. Location Mainland Spain. Time Period Current and future (2071–2100).
Teresa Goicolea   +6 more
wiley   +1 more source

A Kummer construction for Chern–Ricci flat balanced manifolds

open access: yesMathematische Zeitschrift
AbstractGiven a non-Kähler Calabi–Yau compact orbifold with isolated singularities endowed with a Chern–Ricci flat balanced metric, we study, via a gluing construction, the existence of Chern–Ricci flat balanced metrics on its crepant resolutions, and discuss applications to the search of solutions for the Hull–Strominger system.
Giusti, Federico, Spotti, Cristiano
openaire   +5 more sources

Critical lumpy black holes in AdSp×Sq

open access: yesJournal of High Energy Physics, 2021
In this paper we study lumpy black holes with AdSp × S q asymptotics, where the isometry group coming from the sphere factor is broken down to SO(q).
Biel Cardona, Pau Figueras
doaj   +1 more source

The Economic Consequences of Social Unrest: Evidence from Initial Public Offerings

open access: yesEuropean Financial Management, Volume 31, Issue 4, Page 1369-1397, September 2025.
ABSTRACT Prior research attributes negative stock market performance following episodes of social unrest to elevated uncertainty. However, social unrest does not solely increase uncertainty but separately acts to decrease investor sentiment. To determine which effect dominates, we study initial public offering (IPO) underpricing, which responds ...
Philip Barrett   +2 more
wiley   +1 more source

Learning loads on in‐service underground infrastructure with a trans‐dimensional Bayesian inversion method

open access: yesComputer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 23, Page 3750-3772, 19 September 2025.
Abstract Monitoring external loads on underground structures is crucial for structural health assessment. Inverting earth pressures from observable structural responses, such as deformation data, holds promise. However, existing methods often rely on presumptions about pressure complexity, which can be infeasible for many poorly performing in‐service ...
Zhiyao Tian, Xianfei Yin, Shunhua Zhou
wiley   +1 more source

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