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In this paper we consider some results on intersection between rays and a given family of convex, compact sets. These results are similar to the center point theorem, and Tverberg's theorem on partitions of a point set.

组合数学 · 数学 2011-07-06 R. N. Karasev

We classify the surfaces translating under the flows by sub-affine-critical powers of the Gauss curvature. This, in particular, lists all translating solitons possibly model Type II singularities for convex closed solutions in all positive…

微分几何 · 数学 2024-07-22 Beomjun Choi , Kyeongsu Choi , Soojung Kim

Josephson tunneling between YBCO and Pb with the current flowing along the c-axis of the YBCO is persumed to come from an s-wave component of the superconductivity of the YBCO. Experiments on multi-twin samples are not entirely consistent…

超导电性 · 物理学 2009-10-31 Robert Haslinger , Robert Joynt

The concept of covariant coordinates on noncommutative spaces leads directly to gauge theories with generalized noncommutative gauge fields of the type that arises in string theory with background B-fields. The theory is naturally expressed…

高能物理 - 理论 · 物理学 2009-11-07 Branislav Jurco , Peter Schupp , Julius Wess

The order relations of continuous cancellative t-subnorms are discussed. First, we present some necessary and sufficient conditions along with several interesting sufficient criteria for the comparability of continuous cancellative…

表示论 · 数学 2025-08-11 Ting Tang , Xue-ping Wang

The cohomology algebra of the canonical bundle of a compact K\"ahler manifold is naturally viewed as a module over an exterior algebra. We use the Bernstein-Gel'fand-Gel'fand correspondence, together with Generic Vanishing theory, in order…

代数几何 · 数学 2010-07-19 Robert Lazarsfeld , Mihnea Popa

We compare the notion of relative non-pluripolar products and that of density currents on compact Kahler manifolds.

复变函数 · 数学 2020-07-01 Duc-Viet Vu

We continue the B-model development of the open/closed correspondence proposed by Mayr and Lerche-Mayr, complementing the A-model study in the preceding joint works with Liu and providing a Hodge-theoretic perspective. Given a corresponding…

代数几何 · 数学 2025-07-15 Song Yu

By an exact formulation of tunnelling into a multi-band superconductor in terms of Green's functions, we demonstrate that the multi-band feature of the iron-based superconductors can lead to novel interference between Andreev reflections…

超导电性 · 物理学 2013-05-29 Da Wang , Yuan Wan , Qiang-Hua Wang

We study generalizations for higher codimension cycles of several well-known definitions of the nef cone of divisors on a projective variety. These generalizations fix some of the pathologies exhibited by the classical nef cone of higher…

代数几何 · 数学 2016-01-14 Mihai Fulger , Brian Lehmann

In this paper we consider a reduction of a non-homogeneous linear system of first order operator equations to a totally reduced system. Obtained results are applied to Cauchy problem for linear differential systems with constant…

环与代数 · 数学 2013-01-03 Branko Malesevic , Dragana Todoric , Ivana Jovovic , Sonja Telebakovic

The Pfaffian-Grassmannian correspondence relates certain pairs of derived equivalent non-birational Calabi-Yau 3-folds. Given such a pair, I construct a set of derived equivalences corresponding to mutations of an exceptional collection on…

代数几何 · 数学 2021-03-25 Will Donovan

We derive maps relating currents and their divergences in non-abelian U(N) noncommutative gauge theory with the corresponding expressions in the ordinary (commutative) description. For the U(1) theory, in the slowly-varying-field…

高能物理 - 理论 · 物理学 2007-05-23 Rabin Banerjee , Kuldeep Kumar

In this note we prove that any toric Fano manifold with nef tangent bundle is a product of projective spaces. In particular, it implies that Campana-Peternell conjecture hold for toric manifolds.

代数几何 · 数学 2015-06-19 Qilin Yang

When a current is applied to a type-I superconducting strip containing a narrow channel across its width, magnetic flux spots nucleate at the edge and are then driven along the channel by the current. These flux "drops" are reminiscent of…

超导电性 · 物理学 2007-05-23 Stuart B. Field , Gheorghe Stan

We study the deformation theory of projective Stanley-Reisner schemes associated to combinatorial manifolds. We achieve detailed descriptions of first order deformations and obstruction spaces. Versal base spaces are given for certain…

代数几何 · 数学 2009-01-19 Klaus Altmann , Jan Arthur Christophersen

The tunneling current between two crossed graphene ribbons is described invoking the empirical pseudopotential approximation and the Bardeen transfer Hamiltonian method. Results indicate that the density of states is the most important…

介观与纳米尺度物理 · 物理学 2015-10-01 Maarten L. Van de Put , William G. Vandenberghe , Bart Sorée , Wim Magnus , Massimo Fischetti

We define compatible Finsler distances on $1/n$-translation surfaces, we study their geodesics, and construct a Liouville current for each such metric, that is a geodesic current that encodes the information of the length of the closed…

几何拓扑 · 数学 2026-04-03 Beatrice Pozzetti , Jiajun Shi

One-dimensional optical waveguiding is revisited using the electromagnetic deduction of Fresnel formulas relating the incident, reflected, and transmitted waves on the abrupt interface between two different optical media. Throughout the…

The first part of this paper discusses general procedures for finding numerical approximations to distinguished Kahler metrics, such as Calabi-Yau metrics, on complex projective manifolds. These procedures are closely related to ideas from…

微分几何 · 数学 2007-05-23 S. K. Donaldson