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We propose a new construction of compact non-K\"ahler Calabi-Yau manifolds with balanced metrics and study the Strominger system on them. In particular, we obtain explicit solutions to the Strominger system with degeneracies on…

微分几何 · 数学 2018-06-05 Teng Fei

One of the numerous characterizations of a Ramsey cardinal kappa involves the existence of certain types of elementary embeddings for transitive sets of size \kappa satisfying a large fragment of ZFC. We introduce new large cardinal axioms…

逻辑 · 数学 2011-04-25 Victoria Gitman

We prove that many complete, noncompact, constant mean curvature (CMC) surfaces $f:\Sigma \to \R^3$ are nondegenerate; that is, the Jacobi operator $\Delta_f + |A_f|^2$ has no $L^2$ kernel. In fact, if $\Sigma$ has genus zero and…

微分几何 · 数学 2010-06-14 Nick Korevaar , Rob Kusner , Jesse Ratzkin

We show the existence of a $2$-parameter family of properly Alexandrov-embedded surfaces with constant mean curvature $0\leq H\leq\frac{1}{2}$ in ${\mathbb{H}^2\times\mathbb{R}}$. They are symmetric with respect to a horizontal slice and a…

微分几何 · 数学 2024-07-23 Jesús Castro-Infantes , José M. Manzano , Magdalena Rodríguez

We prove a compactness theorem for metrics with Bounded Integral Curvature on a fixed closed surface $\Sigma$. As a corollary, we obtain a compactification of the space of Riemannian metrics with conical singularities, where an accumulation…

微分几何 · 数学 2016-10-20 Clément Debin

The Maskit embedding M of a surface \Sigma is the space of geometrically finite groups on the boundary of quasifuchsian space for which the `top' end is homeomorphic to \Sigma, while the `bottom' end consists of two triply punctured…

几何拓扑 · 数学 2014-11-11 Caroline Series

Critical systems are described by conformal field theories, whose dynamics can be exactly solved in two dimensions. In the presence of a boundary, with the so-called method of images it is possible to study the surface critical behaviour of…

高能物理 - 理论 · 物理学 2007-05-23 Valentina Riva

For a closed minimal immersed hypersurface $M$ in $\mathbb S^{n+1}$ with second fundamental form $A$, and each integer $k\ge 2$, define a constant $\sigma_k=\dfrac{\int_M (|A|^2)^k}{|M|}$. We show that $\sigma_k \ge 2^k$ provided $n=2$ and…

微分几何 · 数学 2024-03-05 Qing Cui , Carlos Peñafiel

We develop a numerical method suitable for gravitational collapse based on Cauchy evolution with an ingoing characteristic boundary. Unlike similar methods proposed recently (Ripley; Bieri, Garfinkle & Yau 2019/20), the numerical grid…

广义相对论与量子宇宙学 · 物理学 2020-12-04 Oliver Rinne

In biomedical and neurodegenerative disorders, accurate and early disease identification remains challenging due to the scarcity of labeled data and the complexity of imaging patterns. To address these challenges, we introduce ARMA-C3, a…

计算机视觉与模式识别 · 计算机科学 2026-05-26 VSS Tejaswi Abburi , Saurabh J. Shigwan , Nitin Kumar

Concept bottleneck models (CBMs) are interpretable models that first predict a set of semantically meaningful features, i.e., concepts, from observations that are subsequently used to condition a downstream task. However, the model's…

机器学习 · 计算机科学 2023-12-04 Renos Zabounidis , Ini Oguntola , Konghao Zhao , Joseph Campbell , Simon Stepputtis , Katia Sycara

We prove a $C^\infty$ closing lemma for Hamiltonian diffeomorphisms of closed surfaces. This is a consequence of a $C^\infty$ closing lemma for Reeb flows on closed contact three-manifolds, which was recently proved as an application of…

辛几何 · 数学 2016-09-15 Masayuki Asaoka , Kei Irie

We prove the main conjecture from [M. R. Douglas, B. Shiffman and S. Zelditch, Critical points and supersymmetric vacua, II: Asymptotics and extremal metrics. J. Differential Geom. 72 (2006), no. 3, 381-427] concerning the metric dependence…

数学物理 · 物理学 2008-02-18 Benjamin Baugher

In this paper we prove that the Morse index of the critical M\"obius band in the $4-$dimensional Euclidean ball $\mathbb B^4$ equals 5. It is conjectured that this is the only embedded non-orientable free boundary minimal surface of index 5…

微分几何 · 数学 2022-09-12 Vladimir Medvedev

In this paper we consider determining a minimal surface embedded in a Riemannian manifold $\Sigma\times \mathbb{R}$. We show that if $\Sigma$ is a two dimensional Riemannian manifold with boundary, then the knowledge of the associated…

偏微分方程分析 · 数学 2022-03-18 Cătălin I. Cârstea , Matti Lassas , Tony Liimatainen , Lauri Oksanen

Anomaly detection and classification in medical imaging are critical for early diagnosis but remain challenging due to limited annotated data, class imbalance, and the high cost of expert labeling. Emerging vision foundation models such as…

图像与视频处理 · 电气工程与系统科学 2025-09-17 Fazle Rafsani , Jay Shah , Catherine D. Chong , Todd J. Schwedt , Teresa Wu

We consider the critical properties of points of continuous glass transition as one can find in liquids in presence of constraints or in liquids in porous media. Through a one loop analysis we show that the critical Replica Field Theory…

统计力学 · 物理学 2015-03-20 Silvio Franz , Giorgio Parisi , Federico Ricci-Tersenghi

We show that if an Alexandrov space $X$ has an Alexandrov subspace $\bar \Omega$ of the same dimension disjoint from the boundary of $X$, then the topological boundary of $\bar \Omega$ coincides with its Alexandrov boundary. Similarly, if a…

度量几何 · 数学 2022-10-17 Vitali Kapovitch , Xingyu Zhu

A quadrangular embedding of a graph in a surface $\Sigma$, also known as a quadrangulation of $\Sigma$, is a cellular embedding in which every face is bounded by a $4$-cycle. A quadrangulation of $\Sigma$ is minimal if there is no…

组合数学 · 数学 2021-06-28 Wenzhong Liu , M. N. Ellingham , Dong Ye

We apply the local removable singularity theorem for minimal laminations and the local picture theorem on the scale of topology to obtain two descriptive results for certain possibly singular minimal laminations of $\mathbb{R}^3$. These two…

微分几何 · 数学 2016-11-24 William H. Meeks , Joaquin Perez , Antonio Ros
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