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We report on our formalization of matrix-interpretation in Isabelle/HOL. Matrices are required to certify termination proofs and we wish to utilize them for complexity proofs, too. For the latter aim, only basic methods have already been…

计算机科学中的逻辑 · 计算机科学 2012-08-09 René Thiemann

The final step of most large-scale structure analyses involves the comparison of power spectra or correlation functions to theoretical models. It is clear that the theoretical models have parameter dependence, but frequently the…

宇宙学与河外天体物理 · 物理学 2016-01-13 Martin White , Nikhil Padmanabhan

Large Language Models (LLMs) have made significant strides in natural language processing, and a precise understanding of the internal mechanisms driving their success is essential. In this work, we analyze the trajectories of token…

机器学习 · 计算机科学 2025-03-06 Murdock Aubry , Haoming Meng , Anton Sugolov , Vardan Papyan

In this work, we study theoretical models of \emph{programmable matter} systems. The systems under consideration consist of spherical modules, kept together by magnetic forces and able to perform two minimal mechanical operations (or…

数据结构与算法 · 计算机科学 2017-03-14 Othon Michail , George Skretas , Paul G. Spirakis

The paper presents advancement of the matrix structural analysis technique (MSA) for stiffness modeling of robotic manipulators. In contrast to the classical MSA, it can be applied to both parallel and serial manipulators composed of…

机器人学 · 计算机科学 2018-05-30 Alexandr Klimchik , Damien Chablat , Anatol Pashkevich

We generalize the notions of the St\"ackel transform and the coupling constant metamorphosis to quasi-exactly solvable systems. We discover that for a variety of one-dimensional and separable multidimensional quasi-exactly solvable systems,…

数学物理 · 物理学 2025-02-20 Siyu Li , Ian Marquette , Yao-Zhong Zhang

New ways to treat electron correlation in electronic structure problems are discussed in the context of many-electron theory. The present work focuses primarily on static correlation. In related work, a method for including dynamical…

化学物理 · 物理学 2018-09-05 Jerry L. Whitten

When a material surface is functionalized so as to acquire some type of order, functionalization of which soft condensed matter systems have recently provided many interesting examples, the modeller faces an alternative. Either the order is…

软凝聚态物质 · 物理学 2018-07-25 Leonid V. Mirantsev , André M. Sonnet , Epifanio G. Virga

Determinantal varieties -- the sets of bounded-rank matrices or tensors -- have attracted growing interest in low-rank optimization. The tangent cone to low-rank sets is widely studied and underpins a range of geometric methods. The…

最优化与控制 · 数学 2025-12-12 Yan Yang , Bin Gao , Ya-xiang Yuan

Linear-scaling electronic-structure techniques, also called O(N) techniques, rely heavily on the multiplication of sparse matrices, where the sparsity arises from spatial cut-offs. In order to treat very large systems, the calculations must…

材料科学 · 物理学 2009-10-31 D. R. Bowler , T. Miyazaki , M. J. Gillan

In this text we review various relations between building blocks of closed and open string amplitudes at tree-level and genus one. We explain that KLT relations between tree-level closed and open string amplitudes follow from the…

高能物理 - 理论 · 物理学 2021-01-22 Pierre Vanhove , Federico Zerbini

Multijet cross sections at the LHC and Tevatron are sensitive to several distinct kinematic energy scales. When measuring the dijet invariant mass m_jj between two signal jets produced in association with other jets or weak bosons, m_jj…

高能物理 - 唯象学 · 物理学 2013-05-30 Christian W. Bauer , Frank J. Tackmann , Jonathan R. Walsh , Saba Zuberi

In the formalism of constrained mechanics, such as that which underlies the SHAKE and RATTLE methods of molecular dynamics, we present an algorithm to convert any one-step integration method to a variational integrator of the same order.…

数值分析 · 数学 2009-03-06 George W. Patrick , Raymond J. Spiteri , William Zhang , Charles Cuell

A matrix balanced version of the Recursive Centered T Matrix Algorithm (RCTMA) applicable to systems possessing resonant inter-particle couplings is presented. Possible domains of application include systems containing interacting localized…

光学 · 物理学 2009-05-21 Brian Stout , Jean-Claude Auger , Alexis Devilez

This is our fourth work in the series on machine learning (ML) moment closure models for the radiative transfer equation (RTE). In the first three papers of this series, we considered the RTE in slab geometry in 1D1V (i.e. one dimension in…

数值分析 · 数学 2026-04-23 Juntao Huang

We present the AMBiT software package for general atomic structure calculations. This software implements particle-hole configuration interaction with many-body perturbation theory (CI+MBPT) for fully relativistic calculations of atomic…

原子物理 · 物理学 2019-01-15 E. V. Kahl , J. C. Berengut

Transforming constraint models is an important task in re- cent constraint programming systems. User-understandable models are defined during the modeling phase but rewriting or tuning them is manda- tory to get solving-efficient models. We…

人工智能 · 计算机科学 2010-02-17 Raphael Chenouard , Laurent Granvilliers , Ricardo Soto

This paper describes a robust, modular, and physics- based circuit framework to model conventional and emerging Magnetic Tunnel Junction (MTJ) devices. Magnetization dynamics are described by the stochastic Landau-Lifshitz-Gilbert (sLLG)…

介观与纳米尺度物理 · 物理学 2018-08-23 Mustafa Mert Torunbalci , Pramey Upadhyaya , Sunil A. Bhave , Kerem Y. Camsari

The article investigates the possibility of measuring the strength of a linear correlation relationship between nominal data and numerical data. Correlation coefficients for variables coded with real numbers as well as for variables coded…

机器学习 · 计算机科学 2023-02-07 Zenon Gniazdowski

The preparation of long-range entangled states using unitary circuits is limited by Lieb-Robinson bounds, but circuits with projective measurements and feedback (``adaptive circuits'') can evade such restrictions. We introduce three classes…

强关联电子 · 物理学 2023-04-14 Tsung-Cheng Lu , Leonardo A. Lessa , Isaac H. Kim , Timothy H. Hsieh