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In this paper, we introduce a generalized topological quantum field theory based on the symmetric monoidal category which we call causal network condensation since it can be regarded as a generalization of spin network construction of Baez,…

范畴论 · 数学 2022-05-03 Xuexing Lu , Ziqian Tang

Neural networks trained with gradient descent often learn solutions of increasing complexity over time, a phenomenon known as simplicity bias. Despite being widely observed across architectures, existing theoretical treatments lack a…

机器学习 · 计算机科学 2026-03-12 Yedi Zhang , Andrew Saxe , Peter E. Latham

We consider a thick p-brane embedded in an n-dimensional spacetime possessing radial symmetry in the directions orthogonal to the brane. We first consider a static brane, and find a general fine tuning relationship between the brane and…

高能物理 - 唯象学 · 物理学 2008-11-26 S. A. Appleby , R. A. Battye

A planar pure braid consists of $n$ descending smooth arcs, each connecting a point on one horizontal line $\ell_{1}$ to a point on a horizontal line $\ell_{2}$, which is required to be directly below the first point. Two arcs are allowed…

群论 · 数学 2021-09-13 Daniel S. Farley

We introduce necklicial nerve functors from enriched categories to simplicial sets, which include Cordier's homotopy coherent, Lurie's differential graded and Le Grignou's cubical nerves. It is shown that every necklicial nerve can be…

范畴论 · 数学 2024-09-06 Arne Mertens

The $k$-secant degree is studied with a combinatorial approach. A planar toric degeneration of any projective toric surface $X$ corresponds to a regular unimodular triangulation $D$ of the polytope defining $X$. If the secant ideal of the…

代数几何 · 数学 2010-12-14 Elisa Postinghel

The medial axis $M_X$ of a closed set $X\subset \mathbb{R}^n$ is the set of points from the ambient space that admit more than one closest point in $X$. We study the problem of reaching the singularities, i.e. of characterising the points…

度量几何 · 数学 2026-04-30 Adam Białożyt , Dominik Bysiewicz , Maciej P. Denkowski

This article introduces the Tensor Network B-spline model for the regularized identification of nonlinear systems using a nonlinear autoregressive exogenous (NARX) approach. Tensor network theory is used to alleviate the curse of…

系统与控制 · 电气工程与系统科学 2020-03-18 Ridvan Karagoz , Kim Batselier

A Bayesian Network (BN) is a probabilistic model that represents a set of variables using a directed acyclic graph (DAG). Current algorithms for learning BN structures from data focus on estimating the edges of a specific DAG, and often…

组合数学 · 数学 2022-10-17 Luke Duttweiler , Sally W. Thurston , Anthony Almudevar

We prove the following generalization of a classical result of Adams: for any pointed and connected topological space $(X,b)$, that is not necessarily simply connected, the cobar construction of the differential graded (dg) coalgebra of…

代数拓扑 · 数学 2018-12-27 Manuel Rivera , Mahmoud Zeinalian

The manuscript describes a quadrature rule that is designed for the high order discretization of boundary integral equations (BIEs) using the Nystr\"{o}m method. The technique is designed for surfaces that can naturally be parameterized…

数值分析 · 数学 2020-07-07 Bowei Wu , Per-Gunnar Martinsson

Given a Coxeter system $(W,S)$ there is a contractible simplicial complex $\Sigma$ called the Davis complex on which $W$ acts properly and cocompactly. In an article of Dymara, the weighted $L^2$-(co)homology groups of $\Sigma$ were…

代数拓扑 · 数学 2016-09-21 Wiktor J. Mogilski

For the gravitational $n$-body problem, the simplest motions are provided by those rigid motions in which each body moves along a Keplerian orbit and the shape of the system is a constant (up to rotations and scalings) configuration…

动力系统 · 数学 2020-11-19 Luca Asselle , Marco Fenucci , Alessandro Portaluri

Though traditional algorithms could be embedded into neural architectures with the proposed principle of \cite{xiao2017hungarian}, the variables that only occur in the condition of branch could not be updated as a special case. To tackle…

神经与进化计算 · 计算机科学 2017-12-19 Han Xiao

Corneal endothelial cell segmentation plays a vital role inquantifying clinical indicators such as cell density, coefficient of variation,and hexagonality. However, the corneal endothelium's uneven reflectionand the subject's tremor and…

计算机视觉与模式识别 · 计算机科学 2021-06-15 Yinglin Zhang , Risa Higashita , Huazhu Fu , Yanwu Xu , Yang Zhang , Haofeng Liu , Jian Zhang , Jiang Liu

A physical artificial complex-valued neuron is formed by four-wave mixing in a homogeneous three-dimensional Bose-Einstein condensate. Bragg beamsplitter pulses prepare superpositions of three plane-waves states as an input- and the fourth…

量子气体 · 物理学 2024-01-26 Kai Niklas Hansmann , Reinhold Walser

Automating classification and segmentation process of abnormal regions in different body organs has a crucial role in most of medical imaging applications such as funduscopy, endoscopy, and dermoscopy. Detecting multiple abnormalities in…

计算机视觉与模式识别 · 计算机科学 2018-10-17 Mohsen Hajabdollahi , Reza Esfandiarpoor , Elyas Sabeti , Nader Karimi , Kayvan Najarian , S. M. Reza Soroushmehr , Shadrokh Samavi

We employ Dirac's bra-ket notation to define the inertia tensor operator that is independent of the choice of bases or coordinate system. The principal axes and the corresponding principal values for the elliptic plate are determined only…

经典物理 · 物理学 2020-12-25 U-Rae Kim , Dohyun Kim , Jungil Lee

Neural networks are known for their ability to approximate smooth functions, yet they fail to generalize perfectly to unseen inputs when trained on discrete operations. Such operations lie at the heart of algorithmic tasks such as…

机器学习 · 计算机科学 2026-02-03 Artur Back de Luca , George Giapitzakis , Kimon Fountoulakis

We formulate the concept of minimal fibration in the context of fibrations in the model category $\mathbf{S}^\mathcal{C}$ of $\mathcal{C}$-diagrams of simplicial sets, for a small index category $\mathcal{C}$. When $\mathcal{C}$ is an…

代数拓扑 · 数学 2019-05-23 Carles Broto , Ramón Flores , Carlos Giraldo
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