Results 31 to 40 of about 2,503 (97)

Some results of η-Ricci solitons on (LCS)n-manifolds [PDF]

Surveys in Mathematics and its Applications, 2018
In this paper, we consider an η -Ricci soliton on the (LCS)n-manifolds (M, φ , ξ , η , g) satisfying certain curvature conditions likes: R(ξ , X) · S= 0 and W 2(ξ, X) · S=0.
S. K. Yadav, S. K. Chaubey, D. L. Suthar
doaj  

On Bochner Flat Kähler B-Manifolds

Axioms, 2023
We obtain on a Kähler B-manifold (i.e., a Kähler manifold with a Norden metric) some corresponding results from the Kählerian and para-Kählerian context concerning the Bochner curvature. We prove that such a manifold is of constant totally real sectional
Cornelia-Livia Bejan, Galia Nakova, Adara M. Blaga   +2 more
doaj   +1 more source

Soliton on Sasakian manifold endowed with quarter-symmetric non-metric connection on the tangent bundle [PDF]

Arab Journal of Mathematical Sciences
PurposeThe purpose of this paper is to study the properties of the solitons on Sasakian manifold on the tangent bundle with respect to quarter symmetric non metric connection.Design/methodology/approachWe used the vertical and complete lifts, Ricci ...
Lalnunenga Colney, Rajesh Kumar
doaj   +1 more source

Tension term, interchange symmetry, and the analogy of energy and tension laws of the AdS soliton solution

, 2009
In this paper, we reconsider the energy and tension laws of the Ricci flat black hole by taking the contribution of the tension term into account. After this considering and inspired by the interchange symmetry between the Ricci flat black hole and the ...
A. Ashtekar, A.M. Awad, D. Kastor, D. Kastor, D. Kastor, E. Witten, G.W. Gibbons, J.H. Traschen, J.M. Maldacena, K. Skenderis, M. Henningson, P.K. Townsend, R.B. Mann, S.W. Hawking, T. Harmark, Y. Brihaye, Y. Kurita, Y. Kurita, Ya-Peng Hu   +18 more
core   +1 more source

Compactness theorems of gradient Ricci solitons

, 2005
In this paper, we prove the compactness theorem for gradient Ricci solitons. Let $(M_{\alpha}, g_{\alpha})$ be a sequence of compact gradient Ricci solitons of dimension $n\geq 4$, whose curvatures have uniformly bounded $L^{\frac{n}{2}}$ norms, whose ...
Anderson, Anderson, Bando, Besse, Cao, Cheeger, Gao, Greene, Hamilton, Hamilton, Jost, Kasue, Nakajima, Perelman, Peters, Shi, Sibner, Tian, Tian, Uhlenbeck, Xi Zhang, Zhang   +21 more
core   +1 more source

η-Ricci solitons in Kenmotsu manifolds

Annals of the West University of Timisoara: Mathematics and Computer Science, 2019
The object of the present paper is to study generalized weakly symmetric and generalized weakly Ricci symmetric Kenmotsu manifolds whose metric tensor is η-Ricci soliton. The paper also aims to bring out curvature conditions for which η-Ricci solitons in
Baishya Kanak Kanti, Chowdhury Partha Roy   +1 more
doaj   +1 more source

Phase Transition of Electrically Charged Ricci-flat Black Holes

, 2007
We study phase transition between electrically charged Ricci-flat black holes and AdS soliton spacetime of Horowitz and Myers in five dimensions. Boundary topology for both of them is $S^1 \times S^1 \times R^2$. We consider Reissner-Nordstrom black hole
D. Birmingham, D. Klemm, D. Yamada, D.N. Page, E. Witten, E. Witten, G. Koutsoumbas, J.M. Maldacena, J.P.S. Lemos, M. Bañados, M. Cvetic, M. Cvetic, N.D. Birrell, Nabamita Banerjee, O. Aharony ., R.B. Mann, R.G. Cai, S. Aminneborg, Suvankar Dutta, T. Nishioka   +19 more
core   +2 more sources

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Expanding solitons with non-negative curvature operator coming out of cones

, 2012
We consider Ricci flow of complete Riemannian manifolds which have bounded non-negative curvature operator, non-zero asymptotic volume ratio and no boundary. We prove scale invariant estimates for these solutions.
Schulze, Felix, Simon, Miles
core   +1 more source

Toral symmetries of collapsed ancient solutions to the homogeneous Ricci flow

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract Collapsed ancient solutions to the homogeneous Ricci flow on compact manifolds occur only on the total space of principal torus bundles. Under an algebraic assumption that guarantees flowing through diagonal metrics and a tameness assumption on the collapsing directions, we prove that such solutions have additional symmetries, that is, they ...
Anusha M. Krishnan, Francesco Pediconi, Sammy Sbiti   +2 more
wiley   +1 more source