Results 121 to 130 of about 34,327 (198)

Lorentzian homogeneous structures with indecomposable holonomy

Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.
Abstract For a Lorentzian homogeneous space, we study how algebraic conditions on the isotropy group affect the geometry and curvature of the homogeneous space. More specifically, we prove that a Lorentzian locally homogeneous space is locally isometric to a plane wave if it admits an Ambrose–Singer connection with indecomposable, non‐irreducible ...
Steven Greenwood, Thomas Leistner
wiley   +1 more source

Ricci flow with Ricci curvature and volume bounded below

Mathematische Annalen
We show that a simply-connected closed four-dimensional Ricci flow whose Ricci curvature is uniformly bounded below and whose volume does not approach zero must converge to a $C^{0}$ orbifold at any finite-time singularity, so has an extension through the singularity via orbifold Ricci flow.
openaire   +2 more sources

Pluripotential Chern-Ricci flows

Indiana University Mathematics Journal
Extending a recent theory developed on compact Kähler manifolds by Guedj-Lu-Zeriahi and the author, we define and study pluripotential solutions to degenerate parabolic complex Monge-Ampère equations on compact Hermitian manifolds. Under natural assumptions on the Cauchy boundary data, we show that the pluripotential solution is semi-concave in time ...
openaire   +4 more sources

Flows of Conformally Coclosed G 2 -Structures with Dilaton. [PDF]

J Geom Anal
Karigiannis S, Picard S, Suan C.
europepmc   +1 more source

Aortic dissection in a Jehovah's witness: Frozen Elephant Trunk and subsequent 4D flow MRI analysis, a case report. [PDF]

J Cardiothorac Surg
Asta L, Mancini V, Mantini C, Ricci F, Benedetto U.   +4 more
europepmc   +1 more source

Underlying Geometric Flow in Hamiltonian Evolution. [PDF]

Entropy (Basel)
Elgressy G, Horwitz L.
europepmc   +1 more source

Beyond the Meal: Trophic Controls by Pelagic and Demersal Chondrichthyes in Two Different Mediterranean Marine Food Webs. [PDF]

Ecol Evol
Ricci P, Finotto L, Barausse A, Zampieri C, Mazzoldi C, Cipriano G, De Luca FP, Carlucci R.   +7 more
europepmc   +1 more source

JKO schemes with general transport costs. [PDF]

Calc Var Partial Differ Equ
Rankin C, Wong TL.
europepmc   +1 more source

Stringy Corrections to Heterotic SU(3)-Geometry. [PDF]

Commun Math Phys
McOrist J, Picard S.
europepmc   +1 more source

Unequal exchange is not primarily about monetary value. [PDF]

Nat Commun
Hornborg A.
europepmc   +1 more source