Piontkovski D., / Series arXiv "math". 2026.
A noncommutative projective variety is defined, following Artin and Zhang, by a graded coherent algebra 𝐴. The category of coherent sheaves is then the quotient qgr(𝐴) of the category of finitely presented graded modules by the subcategory of torsion modules. We consider the categorical and polynomial entropies of the Serre twist, that is, of the ...
Added: June 23, 2026
Piontkovski D., / Series arXiv "math". 2025.
If a symmetric multilinear algebra is weakly nil, then it is Engel. This result may be regarded as an infinite-dimensional analogue of the well-known Jacobian theorem, which states that if a polynomial mapping has a polynomial inverse, then its Jacobian matrix is invertible. This refines a theorem of Gerstenhaber and partially answers a question posed ...
Added: June 23, 2026
Shipilov F., Barnyakov A., Ivanov A. et al., / Series Physics "arxiv.org". 2026.
A fast simulation of the detector response is a vital task in high-energy physics (HEP). Traditional Monte-Carlo methods form the backbone of modern particle physics simulation software but are computationally expensive. We present a machine-learning-based approach to fast simulation of the Focusing Aerogel Ring Imaging Cherenkov (FARICH) detector response. Given a particle track and momentum, ...
Added: May 19, 2026
Derkacheva A., Sakirkina M., Kraev G. et al., /. 2026.
Comprehensive data on natural hazards and their consequences are crucial for effective for risk assessment, adaptation planning, and emergency response. However, many countries face challenges with fragmented, inconsistent, and inaccessible data, particularly regarding local-scale events. To address this data gap in Russia, we developed an end-to-end processing pipeline that scrapes news from various online sources, ...
Added: April 28, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Gabdullin N., Androsov I., / Series Computer Science "arxiv.org". 2026.
Label prediction in neural networks (NNs) has O(n) complexity proportional to the number of classes. This holds true for classification using fully connected layers and cosine similarity with some set of class prototypes. In this paper we show that if NN latent space (LS) geometry is known and possesses specific properties, label prediction complexity can ...
Added: April 2, 2026
Sorokin K., Beketov M., Онучин А. et al., / arxiv.org. Серия cs.SI "Social and Information Networks ". 2025.
Community detection in complex networks is a fundamental problem, open to new approaches in various scientific settings. We introduce a novel community detection method, based on Ricci flow on graphs. Our technique iteratively updates edge weights (their metric lengths) according to their (combinatorial) Foster version of Ricci curvature computed from effective resistance distance between the ...
Added: January 15, 2026
Petrovanov I., Sergeev A., / Series Computer Science "arxiv.org". 2025. No. 2512.18332.
Transport coding reduces message delay in packet-switched networks by introducing controlled redundancy at the transport layer: original packets are encoded into coded packets, and the message is reconstructed after the first successful deliveries, effectively shifting latency from the maximum packet delay to the -th order statistic. We present a concise, reproducible discrete-event implementation of transport coding in OMNeT++, including ...
Added: December 24, 2025
Hessian-based lightweight neural network for brain vessel segmentation on a minimal training dataset
Меньшиков И. А., Бернадотт А. К., Elvimov N. S., / Series arXie "Statistical mechanics". 2025.
Accurate segmentation of blood vessels in brain magnetic resonance angiography (MRA) is essential for successful surgical procedures, such as aneurysm repair or bypass surgery. Currently, annotation is primarily performed through manual segmentation or classical methods, such as the Frangi filter, which often lack sufficient accuracy. Neural networks have emerged as powerful tools for medical image ...
Added: December 1, 2025
Rubchinskiy A., Chubarova D., / Series WP7 "Математические методы анализа решений в экономике, бизнесе и политике". 2025. No. WP7/2025/01.
The article examines one of the most famous examples of socio-economic systems, characterized by significant uncertainty – the S&P-500 stock market, where shares of 500 largest US companies are traded. No assumptions are made about the probabilistic characteristics of the stock market. A flexible algorithm for daily trading has been developed, based on both known fixed data ...
Added: November 9, 2025
Шапиро Д. С., Scientific Reports 2021 Vol. 11 No. 1 Article 8328
Under nonequilibrium conditions, quantum optical systems reveal unusual properties that might
be distinct from those in condensed matter. The fundamental reason is that photonic eigenstates
can have arbitrary occupation numbers, whereas in electronic systems these are limited by the Pauli principle. Here, we address the steady-state transport of pseudothermal photons between two waveguides connected through a cavity ...
Added: October 31, 2021
Maslov V., Теоретическая и математическая физика 2021 Т. 206 № 3 С. 448–452
We consider the construction of asymptotic solutions of linear equations related to equations of classical mechanics: the Hamilton–Jacobi equation and the transport equation. We show that these methods and also the theory of the mechanics of an infinitely narrow beam as a whole can be applied to some objects in bioenergy if the thin organic ...
Added: July 14, 2021
Севальников А. Ю., Рыбакова И. А., Жаров С. Н. et al., М.: Издательская группа URSS, 2021.
The book is devoted to the problem of time. It examines both traditional and completely new concepts of time. The relevance of the topic is due to modern discoveries in the field of confirming the fundamental foundations of quantum mechanics, namely, experiments to check the Legetta-Garg inequalities, experiments with a "quantum eraser that confirm the ...
Added: September 27, 2020
Гаварина С. И., Попов Ю. Л., В кн.: МЕЖВУЗОВСКАЯ НАУЧНО-ТЕХНИЧЕСКАЯ КОНФЕРЕНЦИЯ СТУДЕНТОВ, АСПИРАНТОВ И МОЛОДЫХ СПЕЦИАЛИСТОВ ИМ. Е.В. АРМЕНСКОГО. Москва, 2019.: МИЭМ НИУ ВШЭ, 2019. С. 7–8.
В работе были исследовано влияние спина на систему двух взаимодействующих ферронов со спинами S=3/2, S=5/2, S=7/2 на температурную зависимость теплоемкости и магнитной восприимчивости в холдейновской магнитной системе с спином S=1. ...
Added: December 7, 2019
МФТИ, 2015.
Сборник трудов участников 58-й научной конференции МФТИ ...
Added: June 3, 2018
Trofimova T., М.: КноРус, 2016.
Охватывает все разделы курса физики средней школы и содержит справочный материал, с помощью которого читатель может восстановить в памяти необходимые определения, законы и формулы, Каждая статья представляет собой краткий конспект ответа на соответствующий вопрос курса. Может быть эффективно использовано при подготовке к зачетам и экзаменам, при решении задач, для систематизации знаний по физике.
Для учащихся средний ...
Added: December 29, 2015
Trofimova T., М.: КноРус, 2015.
В книге в краткой и доступной форме дается изложение курса физики. В конце каждого раздела приводятся примеры решения задач. Приложения содержат определения основных и производных единиц физических величин, основные формулы для решения задач и другие справочные материалы. Для студентов вузов, а также для учащихся при самостоятельной подготовки к зачетам, контрольным и проверочным работам. ...
Added: November 30, 2015
Trofimova T., М.: Издательский центр «Академия», 2015.
Учебное пособие создано в соответствии с Федеральным образовательным стандартом по техническим направлениям подготовки (квалификация бакалавр). Пособие содержит разбор решений наиболее типичных задач по всем основным разделам физики с кратким изложением теоретического материала, предусмотренного программой курса физики для бакалавров, а также задачи для самостоятельного решения. Составляет учебный комплект для бакалавров с учебником «Физика» (автор – Трофимова ...
Added: October 29, 2015
Trofimova T., М.: Издательский центр «Академия», 2015.
Учебное пособие создано в соответствии с Федеральным образовательным стандартом по техническим направлениям подготовки (квалификация бакалавр). Пособие содержит решение всех задач, приведенных в пособии «Физика. Задачи» для высшего образования (бакалавриат) в разделе «Задачи для самостоятельного решения». Подробное изложение теоретического материала можно найти в учебнике «Физика», а примеры решения задач – в учебном пособии «Физика. Задачи», составляющих ...
Added: October 29, 2015
Trofimova T., Фирсов А. В., М.: Издательский центр «Академия», 2015.
В пособие включены решения всех задач из книги Трофимовой Т.И. и Фирсова А.В. «Физика для профессий и специальностей технического и естественно-научного профилей. Сборник задач». Задачи решены однотипно: краткая запись условия, перевод данных в СИ, необходимые уравнения, их решения в общем виде, подстановка числовых значений в конечную формулу, проверка размерности, запись ответа. Представлены задачи различной степени ...
Added: May 25, 2015
Andrew G. Semenov, / Series cond-mat "arxiv.org". 2013.
In this letter the phenomenon of macroscopic quantization is investigated using the particle on the ring interacting with the dissipative environment as an example. It is shown that the phenomenon of macroscopic quantization has the clear physical origin in that case. It follows from the angular momentum conservation combined with momentum quantization for bare particle ...
Added: February 9, 2015
Karpenko I., / Series WP "Working Papers of Humanities". 2014. No. 44.
The article looks at the possible role of measurement in a quantum-mechanical description of physical reality. The widely spread interpretations of quantum phenomena are considered as indicating an apparent connection between conscious processes (such as observation) and the properties of the microcosm. The reasons for discrepancies between the results of observations of the microcosm and ...
Added: April 24, 2014
Nikerov V. A., М.: Издательско-торговая корпорация «Дашков и Ко», 2014.
The textbook represents the modern view on the mechanics and molecular physics, electrodynamics and wave optics, and quantum physics. The course is compact, but it gives a complete picture of the basic modern physics laws and concepts including their origin and relationship. The key concepts and approaches of today's physics corresponding to the State educational ...
Added: January 31, 2014
Trofimova T., Фирсов А. В., М.: Издательский центр «Академия», 2013.
В задачник включено около 1000 задач различной сложности, охватывающие материал действующей программы по физике для специальностей начального и среднего профессионального образования на базе основного общего образования. В начале каждой главы приведены основные законы и формулы, необходимые для решения задач, а также решения типовых задач. Ко всем задачам приведены ответы. В задачнике имеются задачи повышенной сложности ...
Added: October 1, 2013