Results 21 to 30 of about 8,119 (142)

Curvature flows for almost-hermitian Lie groups [PDF]

, 2014
We study curvature flows in the locally homogeneous case (e.g. compact quotients of Lie groups, solvmanifolds, nilmanifolds) in a unified way, by considering a generic flow under just a few natural conditions on the broad class of almost-hermitian ...
Lauret, Jorge
core   +3 more sources

Gaussian upper bounds for the heat kernel on evolving manifolds

Journal of the London Mathematical Society, Volume 108, Issue 5, Page 1747-1768, November 2023., 2023
Abstract In this article, we prove a general and rather flexible upper bound for the heat kernel of a weighted heat operator on a closed manifold evolving by an intrinsic geometric flow. The proof is based on logarithmic Sobolev inequalities and ultracontractivity estimates for the weighted operator along the flow, a method that was previously used by ...
Reto Buzano, Louis Yudowitz
wiley   +1 more source

Variation of complex structures and the stability of K\"ahler-Ricci Solitons [PDF]

, 2012
We investigate the linear stability of K\"ahler-Ricci solitons for perturbations induced by varying the complex structure within a fixed K\"ahler class.
Bien, Cao, Dai, Hamilton, Koiso, Stuart Hall, Thomas Murphy   +6 more
core   +2 more sources

Ricci almost solitons and gradient Ricci almost solitons in $(k,\mu)$-paracontact geometry

Boletim da Sociedade Paranaense de Matemática, 2017
The purpose of this paper is to study Ricci almost soliton and gradient Ricci almost soliton in $(k,\mu)$-paracontact metric manifolds. We prove the non-existence of Ricci almost soliton in a $(k,\mu)$-paracontact metric manifold $M$ with $k<-1$ or $k>-1$ and whose potential vector field is the Reeb vector field $\xi$.
Uday Chand De, Krishanu Mandal
openaire   +4 more sources

Bach-flat h-almost gradient Ricci solitons [PDF]

Pacific Journal of Mathematics, 2017
12 ...
Yun, Gabjin, Co, Jinseok, Hwang, Seungsu
openaire   +3 more sources

Geometry of para-Sasakian metric as an almost conformal η-Ricci soliton [PDF]

Journal of Geometry and Physics, 2021
. In this paper, we initiate the study of conformal η -Ricci soliton and almost conformal η -Ricci soliton within the framework of para-Sasakian manifold.
S. Sarkar, S. Dey, A. H. Alkhaldi, A. Bhattacharyya   +3 more
semanticscholar   +1 more source

Characterization of almost +-conformal η-Ricci soliton on para-Kenmotsu manifolds

Filomat, 2023
The goal of this research paper is to deliberate +-conformal ?-Ricci soliton and gradient almost +-conformal ?-Ricci soliton within the framework of para-Kenmotsu manifolds as a characterization of Einstein metrics.
S. Dey, Siraj Uddin
semanticscholar   +1 more source

Some results on almost η-Ricci-Bourguignon solitons

Journal of Geometry and Physics, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Adara M. Blaga, Hakan M. Taştan
openaire   +2 more sources

Almost Kaehler Ricci Flows and Einstein and Lagrange-Finsler Structures on Lie Algebroids

, 2013
In this work we investigate Ricci flows of almost Kaehler structures on Lie algebroids when the fundamental geometric objects are completely determined by (semi) Riemannian metrics, or effective) regular generating Lagrange/ Finsler, functions. There are
Vacaru, Sergiu I.
core   +1 more source

Generalized Almost-Ka¨Hler–Ricci Solitons

Differential Geometry and its Applications
We generalize K\"ahler-Ricci solitons to the almost-K\"ahler setting as the zeros of Inoue's moment map \cite{MR4017922}, and show that their existence is an obstruction to the existence of first-Chern-Einstein almost-K\"ahler metrics on compact symplectic Fano manifolds.
Michael Albanese, Giuseppe Barbaro, Mehdi Lejmi   +2 more
openaire   +4 more sources