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We prove the existence of a unique complete shrinking gradient K\"ahler-Ricci soliton with bounded scalar curvature on the blowup of $\mathbb{C}\times\mathbb{P}^{1}$ at one point. This completes the classification of such solitons in two…

Differential Geometry · Mathematics 2022-06-23 Richard H. Bamler , Charles Cifarelli , Ronan J. Conlon , Alix Deruelle

By Perelman's $\mathcal L$-geodesic theory, we study the blow-down solutions on a noncompact $\kappa$-noncollapsed steady gradient Ricci soliton $(M^n, g)$ $(n\ge 4)$ with nonnegative curvature operator and positive Ricci curvature away…

Differential Geometry · Mathematics 2025-05-01 Ziyi Zhao , Xiaohua Zhu

We give a result estimating the dimension of the Lie algebra of Killing vector fields on an irreducible non-trivial gradient Ricci soliton. Then we study the structure of this manifold when the maximal dimension is attained. There are local…

Differential Geometry · Mathematics 2024-06-12 Ha Tuan Dung , Hung Tran

The aim of this paper is to study geometrical aspects of static spacetime admitting an almost gradient Ricci soliton. Among others, We first determine the conditions under which the base manifold of static spacetime possess an almost…

Differential Geometry · Mathematics 2025-10-21 Akhilesh Yadav , Tarun Saxena

In this paper, we survey the volume growth estimates for shrinking, steady, and expanding gradient Ricci solitons. Together with the known results, we also prove some new volume growth estimates for expanding gradient Ricci solitons.

Differential Geometry · Mathematics 2022-03-01 Pak-Yeung Chan , Zilu Ma , Yongjia Zhang

This paper provides a study of algebraic Ricci solitons in the pseudo-Riemannian case. In the Riemannian case, all nontrivial homogeneous algebraic Ricci solitons are expanding algebraic Ricci solitons. In this paper, we obtain a steady…

Differential Geometry · Mathematics 2012-03-22 Kensuke Onda

We consider gradient Ricci solitons conformal to a $n$-dimensional pseudo-Euclidean space and we completely describe the most general ansatz that reduces the resulting system of partial differential equations to a system of ordinary…

Differential Geometry · Mathematics 2021-11-02 Benedito Leandro , João Paulo dos Santos

This paper studies a complete gradient Ricci soliton with an isoparametric potential function. Our first theorem asserts that, for the steady case, there is a critical level set of codimension greater than one. This is consistent with…

Differential Geometry · Mathematics 2026-01-23 Hung Tran , Kazuo Yamazaki

In this paper, we analyze the asymptotic behavior of $\kappa$-noncollapsed and positively curved steady Ricci solitons and prove that any $n$-dimensional $\kappa$-noncollapsed steady K\"ahler-Ricci soliton with non-negative sectional…

Differential Geometry · Mathematics 2017-01-17 Yuxing Deng , Xiaohua Zhu

We derive lower bounds on the scalar curvature of complete non-compact gradient Yamabe solitons under some integral curvature conditions. Based on this, we prove that the corresponding potential functions have at most quadratic growth in…

Differential Geometry · Mathematics 2018-03-29 Jia-Yong Wu

In this note we prove that any four-dimensional half conformally flat gradient steady Ricci soliton must be either Bryant's soliton or Ricci flat. We also classify four-dimensional half conformally flat gradient shrinking Ricci solitons…

Differential Geometry · Mathematics 2011-02-08 Xiuxiong Chen , Yuanqi Wang

In this paper, we study the gradient Ricci soliton equation on a complete Riemannian manifold. We show that under a natural decay condition on the Ricci curvature, the Ricci soliton is Ricci-flat and ALE.

Differential Geometry · Mathematics 2007-05-23 Li Ma

We establish a uniform entropy bound for simply connected Ricci shrinkers with a finite second homotopy group and a uniform curvature bound. Additionally, we extend the non-collapsing result to a broader class of smooth metric measure…

Differential Geometry · Mathematics 2024-12-19 Conghan Dong , Yu Li

This undergraduate thesis is focused on introducing the reader to concepts related to the search for topological obstructions to the existence of compact gradient shrinking Ricci soliton metrics in dimension four. It contains a discussion…

Differential Geometry · Mathematics 2025-10-31 Cameron MacMahon

In this paper geometrical aspects of perfect fluid spacetime with torse-forming vector field \xi are discribed and Ricci soliton in perfect fluid spacetime with torse-forming vector field \xi are determined. Conditions for the Ricci soliton…

Differential Geometry · Mathematics 2018-06-05 Venkatesha , Aruna Kumara H

We consider four-dimensional homogeneous pseudo-Riemannian manifolds with non-trivial isotropy and completely classify the cases giving rise to non-trivial homogeneous Ricci solitons. In particular, we show the existence of non-compact…

Differential Geometry · Mathematics 2015-02-03 Giovanni Calvaruso , Anna Fino

Let $(M^n,g)$ $(n\ge 4)$ be a complete noncompact $\kappa$-noncollapsed steady Ricci soliton with $\rm{Rm}\geq 0$ and $\rm{Ric}> 0$ away from a compact set $K$ of $M$. We prove that there is no any $(n-1)$-dimensional compact split limit…

Differential Geometry · Mathematics 2024-02-02 Ziyi Zhao , Xiaohua Zhu

Ricci solitons on Finsler spaces, previously developed by the present authors, are a generalization of Einstein spaces, which can be considered as a solution to the Ricci flow on compact Finsler manifolds. In the present work it is shown…

Differential Geometry · Mathematics 2015-08-11 Behroz Bidabad , Mohamad Yar Ahmadi

In this paper we prove that the Sobolev inequality, the logarithmic Sobolev inequality, the Schr\"odinger heat kernel upper bound, the Faber-Krahn inequality, the Nash inequality and the Rozenblum-Cwikel-Lieb inequality all equivalently…

Differential Geometry · Mathematics 2025-01-20 Jia-Yong Wu

We construct examples of Bach-flat gradient Ricci solitons which are neither half conformally flat nor conformally Einstein.

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