Results 41 to 50 of about 6,006 (168)

Generalized Yamabe Flows

open access: yesAnalysis and Mathematical Physics
Abstract In this work we introduce a family of conformal flows generalizing the classical Yamabe flow. We prove that for a large class of such flows long-time existence holds, and the arguments are in fact simpler than in the classical case.
Lye, Jørgen Olsen   +2 more
openaire   +2 more sources

The Yamabe flow on asymptotically flat manifolds

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 2023
Abstract We study the Yamabe flow starting from an asymptotically flat manifold ( M n
Chen, Eric, Wang, Yi
openaire   +3 more sources

Ricci-Bourgoignon Flow on Contact Manifolds

open access: yesپژوهش‌های ریاضی, 2020
Introduction After pioneering work of Hamilton in 1982, Ricci flow and other geometric flows became as one of the most interesting topics in both mathematics and physics.
Ghodratallah Fasihi-Ramandi   +1 more
doaj  

Coupling between global brain blood oxygen level‐dependent activity and cerebrospinal fluid dynamics in young endurance athletes

open access: yesExperimental Physiology, EarlyView.
Abstract Cerebrospinal fluid (CSF) contributes to brain waste clearance through its coupling with cerebral haemodynamics. Aerobic exercise promotes brain health, but its influence on brain waste clearance remains unclear. This study examined the coupling between CSF and cerebral haemodynamics in endurance athletes. Fifteen young male endurance athletes
Daisuke Hoshi   +9 more
wiley   +1 more source

The second Yamabe invariant with boundary

open access: yesAdvances in Nonlinear Analysis
Let (M,∂M,g)\left(M,\partial M,g) be a compact Riemannian manifold with boundary. As a generalization of the Yamabe invariant with boundary Y(M,∂M,g)Y\left(M,\partial M,g), we define the kth Yamabe invariant with boundary Yk(M,∂M,g){Y}_{k}\left(M ...
Ho Pak Tung, Pyo Juncheol
doaj   +1 more source

Acute Renal Dysfunction and Candidemia due to Bilateral Ureteral Obstruction by Candida albicans Fungus Balls—Case Report

open access: yesClinical Case Reports, Volume 14, Issue 2, February 2026.
ABSTRACT Presented here is an extremely rare case of bilateral ureteral obstruction due to Candida albicans fungus balls, which led to acute kidney dysfunction and candidemia. An 83‐year‐old man was brought to our hospital after falling due to poor physical condition.
Mizuki Kasahara   +5 more
wiley   +1 more source

A probabilistic method for gradient estimates of some geometric flows

open access: yes, 2015
In general, gradient estimates are very important and necessary for deriving convergence results in different geometric flows, and most of them are obtained by analytic methods.
Chen, Xin, Cheng, Li-Juan, Mao, Jing
core   +1 more source

The cosymplectic Chern–Hamilton conjecture

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 2, February 2026.
Abstract In this paper, we study the Chern–Hamilton energy functional on compact cosymplectic manifolds, fully classifying in dimension 3 those manifolds admitting a critical compatible metric for this functional. This is the case if and only if either the manifold is co‐Kähler or if it is a mapping torus of the 2‐torus by a hyperbolic toral ...
Søren Dyhr   +3 more
wiley   +1 more source

On Normalized Ricci Flow and Smooth Structures on Four-Manifolds with $b^+=1$

open access: yes, 2008
We find an obstruction to the existence of non-singular solutions to the normalized Ricci flow on four-manifolds with $b^+=1$. By using this obstruction, we study the relationship between the existence or non-existence of non-singular solutions of the ...
Ishida, Masashi   +2 more
core   +1 more source

A fractional Yamabe flow and some applications [PDF]

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 2013
Abstract We introduce a fractional Yamabe flow involving nonlocal conformally invariant operators on the conformal infinity of asymptotically hyperbolic manifolds, and show that on the conformal spheres (
Jin, Tianling, Xiong, Jingang
openaire   +3 more sources

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