Results 41 to 50 of about 4,522,677 (161)
Ricci‐Bourguignon Solitons With Certain Applications to Relativity
Journal of Mathematics, Volume 2025, Issue 1, 2025.This article concerns with the investigation of Ricci‐Bourguignon solitons and gradient Ricci‐Bourguignon solitons in perfect fluid space‐times and generalised Robertson–Walker space‐times. First, we deduce the criterion for which the Ricci‐Bourguignon soliton in a perfect fluid space‐time is steady, expanding or shrinking. Then, we establish that if a
Krishnendu De +4 more
wiley +1 more source
Existence of the $(α,β)$-Ricci-Yamabe flow on closed manifolds [PDF]
, 2023 Liangdi Zhang
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Convergence of the weighted Yamabe flow [PDF]
Differential geometry and its applications, 2021 Zetian Yan
semanticscholar +1 more source
Ricci Solitons and Generalized Ricci Solitons Whose Potential Vector Fields Are Jacobi‐Type
Journal of Mathematics, Volume 2025, Issue 1, 2025.This paper is devoted to Ricci solitons admitting a Jacobi‐type vector field. First, we present some rigidity results for Ricci solitons (Mn, g, V, λ) admitting a Jacobi‐type vector field ξ and provide conditions under which ξ is Killing. We also present conditions under which the Ricci soliton (Mn, g, ξ, λ) is isometric to Rn.
Vahid Pirhadi +3 more
wiley +1 more source
2‐Conformal Vector Fields on the Model Sol Space and Hyperbolic Ricci Solitons
Journal of Mathematics, Volume 2025, Issue 1, 2025.In this study, we present the notion of 2‐conformal vector fields on Riemannian and semi‐Riemannian manifolds, which are an extension of Killing and conformal vector fields. Next, we provide suitable vector fields in Sol space that are 2‐conformal. A few implications of 2‐conformal vector fields in hyperbolic Ricci solitons are investigated.
Rawan Bossly +3 more
wiley +1 more source
A single gene determines allorecognition in hydrozoan jellyfish Cladonema radiatum inbred lines
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 341, Issue 9, Page 1002-1020, November 2024.Abstract Allorecognition—the ability of an organism to discriminate between self and nonself—is crucial to colonial marine animals to avoid invasion by other individuals in the same habitat. The cnidarian hydroid Hydractinia has long been a major research model in studying invertebrate allorecognition, establishing a rich knowledge foundation.
Crystal Tang +7 more
wiley +1 more source
Journal of the London Mathematical Society, Volume 110, Issue 5, November 2024.Abstract For large classes of even‐dimensional Riemannian manifolds (M,g)$(M,g)$, we construct and analyze conformally invariant random fields. These centered Gaussian fields h=hg$h=h_g$, called co‐polyharmonic Gaussian fields, are characterized by their covariance kernels k which exhibit a precise logarithmic divergence: |k(x,y)−log1d(x,y)|≤C$\big ...
Lorenzo Dello Schiavo +3 more
wiley +1 more source
Global Yamabe flow on asymptotically flat manifolds [PDF]
, 2021 Li Ma
semanticscholar +1 more source
Aperture Field Anisotropy Control on Immiscible Displacement Patterns in Rough Fractures
Water Resources Research, Volume 60, Issue 10, October 2024.Abstract Two‐phase flow displacement in rock fractures is crucial for various subsurface mass transfer processes and engineering applications. In fractures, the displacement of a less viscous fluid by a more viscous one (i.e., viscosity ratio M > 1) involves viscous forces help stabilizing the displacement front in presence of capillary pressure ...
Kun Xing +5 more
wiley +1 more source
Incomplete Yamabe flows and removable singularities [PDF]
, 2020 Mario B. Schulz
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