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The paper investigates the (non)existence of compact quotients, by a discrete subgroup, of the homogeneous almost-complex strongly-pseudoconvex manifolds disconvered and classified by Gaussier-Sukhov and K.-H. Lee.

Complex Variables · Mathematics 2017-01-10 Kang-Tae Kim , Kang-Hyurk Lee , Yoshikazu Nagata

We calculate a collective number of thermodynamic quantities in a one-dimensional gas of hard elongated objects (such as needles) whose centers mobile on a line. Our formalism uses an approximation for the probabilities of contact between…

Statistical Mechanics · Physics 2012-12-11 Mohammad H. Ansari

We establish an equivalence between conformally Einstein--Maxwell Kahler 4-manifolds (recently studied in many works) and extremal Kahler 4-manifolds (in the sense of Calabi) with nowhere vanishing scalar curvature. The corresponding pairs…

Differential Geometry · Mathematics 2019-01-07 Vestislav Apostolov , David M. J. Calderbank

I calculate the superfluid density of a non-equilibrium steady state condensate of particles with finite lifetime. Despite the absence of a simple Landau critical velocity, a superfluid response survives, but dissipation reduces the…

Quantum Gases · Physics 2011-08-17 Jonathan Keeling

We give a simple construction of new, complete, finite volume manifolds $M$ of bounded, nonpositive curvature. These manifolds have ends that look like a mixture of locally symmetric ends of different ranks and their fundamental groups are…

Geometric Topology · Mathematics 2021-03-17 Grigori Avramidi , T. Tam Nguyen Phan

In this paper, we initiate the study of $\p R$-warped products in para-K\"ahler manifolds and prove some fundamental results on such submanifolds. In particular, we establish a general optimal inequality for $\p R$-warped products in…

Differential Geometry · Mathematics 2011-06-21 Bang-Yen Chen , Marian Ioan Munteanu

We give an equivalent definition of compact locally conformally hyperk\"ahler manifolds in terms of the existence of a nondegenerate complex two-form with natural properties. This is a conformal analogue of Beauville's theorem stating that…

Differential Geometry · Mathematics 2020-07-30 Liviu Ornea , Alexandra Otiman

We study non-Kaehler manifolds with trivial logarithmic tangent bundle. We show that each such manifold arises as a fiber bundle with a compact complex parallelizable manifold as basis and a toric variety as fiber.

Complex Variables · Mathematics 2007-05-23 Joerg Winkelmann

The long-time existence and umbilicity estimates for compact, graphical solutions to expanding curvature flows are deduced in Riemannian warped products of a real interval with a compact fibre. Notably we do not assume the ambient manifold…

Differential Geometry · Mathematics 2019-02-14 Julian Scheuer

In this work, we study the convergence of the normalized Yamabe flow with positive Yamabe constant on a class of pseudo-manifolds that includes stratified spaces with iterated cone-edge metrics. We establish convergence under a low energy…

Differential Geometry · Mathematics 2025-08-25 Gilles Carron , Jørgen Olsen Lye , Boris Vertman

We prove that a non-projective compact K\"ahler contact manifold is of the form $\mathbb{P} T_Y$, where $Y$ is a compact K\"ahler manifold.

Algebraic Geometry · Mathematics 2026-04-30 Jie Liu

Theorem (uniformization). Let X be a compact Kahler manifold of dimension n with large, residually finite and nonamenable fundamental group. Then its universal covering is a bounded domain in the n-dimensional affine space.

Algebraic Geometry · Mathematics 2016-08-01 Robert Treger

Using the duality of positive cones, we show that applying the polar transform from convex analysis to local positivity invariants for divisors gives interesting and new local positivity invariants for curves. These new invariants have nice…

Algebraic Geometry · Mathematics 2017-07-21 Nicholas McCleerey , Jian Xiao

We construct a new class of scalar noncommutative multi-solitons on an arbitrary Kahler manifold by using Berezin's geometric approach to quantization and its generalization to deformation quantization. We analyze the stability condition…

High Energy Physics - Theory · Physics 2009-11-07 Marcus Spradlin , Anastasia Volovich

We investigate compact complex manifolds endowed with SKT or balanced metrics. In each case we define a new functional whose critical points are proved to be precisely the K\"ahler metrics, if any, on the manifold. As general manifolds of…

Differential Geometry · Mathematics 2023-05-16 Sławomir Dinew , Dan Popovici

The non-equilibrium steady states of a semi-infinite quasi-one-dimensional univalent binary electrolyte solution, characterised by non-vanishing electric currents, are investigated by means of Poisson-Nernst-Planck (PNP) theory. Exact…

Soft Condensed Matter · Physics 2024-01-09 Markus Bier

We extend to any simply connected K\"ahler manifold with non-positive sectional curvature some conditions for interpolation in $\mathbb{C}$ and in the unit disk given by Berndtsson, Ortega-Cerd\`a and Seip. The main tool is a comparison…

Complex Variables · Mathematics 2018-05-24 Christophe Mourougane

New relations involving curvature components for the various connections appearing in the theory of almost product manifolds are given and the conformal behaviour of these connections are studied. New identities for the irreducible parts of…

High Energy Physics - Theory · Physics 2016-08-15 Magnus Holm , Niclas Sandström

Nonvanishing theorems play a central role in birational geometry, since they derive geometric consequences from numerical information and constitute a crucial step towards abundance and semiampleness problems. General nonvanishing…

Algebraic Geometry · Mathematics 2025-10-22 Andreas Höring , Vladimir Lazić , Christian Lehn

We advocate a simple multipole expansion of the polarisation density matrix. The resulting multipoles appear as successive moments of the Stokes variables and can be obtained from feasible measurements. In terms of these multipoles, we…