?
Минимизация суммарного взвешенного запаздывания на одном приборе с равными продолжительностями обслуживания требований
Автоматика и телемеханика. 2020. Т. 5. С. 119–138.
Gafarov E., Lazarev A. A., Werner F.
Bolbachan V., / Series math "arxiv.org". 2024.
Chow polylogarithms are some special functions arising in explicit description of the Beilinson regulator map. The most interesting functional equation for this function reflects its vanishing on the boundary in the Bloch's cycle complex. We show that this functional equation formally follows from more simple ones, namely skew-symmetry, functoriality and multiplicativity.
To prove this, we study ...
Added: July 16, 2026
Bolbachan V., / Series math "arxiv.org". 2024.
Let K be a field of characteristic zero. We prove that its motivic cohomology in degree m−1 and weight m is rationally isomorphic to the cohomology of the polylogarithmic complex. This gives a partial extension of A. Suslin theorem describing the indecomposable K3 of a field. ...
Added: July 16, 2026
Panov V., Ryabchenko A., / Series arXiv "stat.ME". 2026. No. 2607.05048.
This paper investigates the problem of statistical inference for a mixture distribution consisting of a discrete and a continuous component, with a particular focus on the class of rational-infinitely divisible distributions. We consider non-parametric estimation of both components of the mixture as well as the quasi-L{é}vy measure, assuming that the mixture belongs to the class ...
Added: July 9, 2026
Konakov V., Kucher D., Mammen E., / Series arXiv "math". 2026. No. 2606.11142v1.
In this paper, we construct strong approximations for discrete-time Markov chains weakly converging to continuous diffusion processes, as well as for their perturbed counterparts. Under the assumption of bounded coefficients, we construct closely coupled versions of these processes on a shared probability space. In particular, for both non-degenerate and degenerate cases, we maximize the probability ...
Added: June 11, 2026
Dorovskiy A., / Series arXiv "math". 2026.
In this paper the structural stability of generic families of vector fields of the PC-HC class on the two-dimensional sphere is proved. A classification of these families up to moderate equivalence in neighborhoods of their large bifurcation supports is presented, based on such invariants as the configuration and the characteristic set. The realization lemma is proved. ...
Added: May 14, 2026
Taletskii D., / Series arXiv "math". 2026.
A vertex subset of a graph is called a \textit{distance-$k$ independent set} if the distance between any two of its distinct vertices is at least $k + 1$. For all $n,k \geq 1$, we determine the minimum possible number of inclusion-wise maximal distance-$k$ independent sets among all $n$-vertex trees. It equals~$n$ if $n \leq k ...
Added: May 1, 2026
Ovcharenko M., / Series arXiv "math". 2026.
We introduce an explicit class of tempered Laurent polynomials in the sense of Villegas and Doran--Kerr in n⩽4 variables including all Landau--Ginzburg models for smooth Fano threefolds with very ample anticanonical class. We check that it contains Landau--Ginzburg models for various Fano fourfolds which are complete intersections in smooth toric varieties and Grassmannians of planes, ...
Added: April 30, 2026
Zlotnik Alexander, / Series arXiv "math". 2026. No. 2602.03481v1.
We deal with the global in time weak solutions to the 1D compressible Navier-Stokes system of equations for large discontinuous initial data and nonhomogeneous boundary conditions of three standard types. We prove the Lipschitz-type continuous dependence of the solution $(\eta,u,\theta)$, in a norm slightly stronger than $L^{2,\infty}(Q)\times L^2(Q)\times L^2(Q)$, on the initial data $(\eta^0,u^0,e^0)$ in a ...
Added: April 18, 2026
Medvedev V., / Series arXiv "math". 2026.
We investigate the interplay between the dimension of the space of static potentials and the geometric and topological structure of the underlying static three-manifold. A partial classification of boundaryless static manifolds is obtained in terms of this dimension. We also treat the case of static manifolds with boundary. In particular, we prove that if a ...
Added: April 3, 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
Kolesnikov A., / Series arXiv "math". 2025.
We study Blaschke--Santal{ó}-type inequalities for N>=2 sets (functions) and a special class of cost functions. In particular, we prove new results about reduction of the maximization problem for the Blaschke--Santal{ó}-type functional to homogeneous case (functional inequalities on the sphere) and extend the symmetrization argument to the case of N>2 sets.
We also discuss links to the ...
Added: February 13, 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
Gaianov N., Parusnikova A., / Cornell University. Серия math "arxiv.org". 2025.
An algebraic q-difference equation is considered. A sufficient condition for the existence of a formal power-logarithmic expansion of a solution to such an equation in the neighborhood of zero is proposed. An example of applying this sufficient condition for constructing a formal expansion of a solution to a certain q-difference analogue of the fifth Painlevé equation ...
Added: December 25, 2025
Popov V., / Series arXiv "math". 2025. No. 2502.01539.
We prove that the variety of flexes of algebraic curves
of degree 3 in the projective plane is an ideal theoretic complete
intersection in the product of a two-dimensional and a nine-dimensional projective spaces. ...
Added: December 16, 2025
Gnetov F., Konakov V., / Series arXiv "math". 2025. No. 2512.04667.
We establish a central limit theorem, a local limit theorem, and a law of large numbers for a natural
random walk on a symmetric space M of non-compact type and rank one. This class of spaces, which
includes the complex and quaternionic hyperbolic spaces and the Cayley hyperbolic plane, generalizes
the real hyperbolic space Hn. Our approach introduces ...
Added: December 5, 2025
Kazakov A., Koryakin V., Safonov K. et al., / Series arXiv "math". 2025.
The Lorenz attractor is the first example of a robustly chaotic non-hyperbolic attractor. Each orbit of such an attractor has a positive top Lyapunov exponent, and this property persists under small perturbations despite possible bifurcations of the attractor. In this paper, we study the boundary of the Lorenz attractor existence region in the Shimizu-Morioka model. ...
Added: December 4, 2025
Bitter I., Konakov V., / Cornell University. Серия arXiv "math". 2025. № 2505.24548.
В работе приводится обобщение локальной предельной теоремы о сходимости неоднородных цепей Маркова к диффузионному пределу на случай, когда соответ- ствующие коэффициенты процессов удовлетворяют слабым условиям регулярности и совпадают лишь асимптотически. В частности, рассматриваемые нами коэффици- енты сноса могут быть неограниченными с не более чем линейным ростом, а оценки отражают перенос терминального состояния неограниченным трендом через ...
Added: December 3, 2025
Alexander Lazarev, Nikolay Pravdivets, Barashov E., Mathematics 2024 Vol. 12 No. 5 Article 699
The problem of the approximation of the coefficients of the objective function of a scheduling problem for a single machine is considered. It is necessary to minimize the total weighted completion times of jobs with unknown weight coefficients when a set of problem instances with known optimal schedules is given. It is shown that the ...
Added: May 16, 2024
Alexander Lazarev, Lemtyuzhnikova D., Nikolay Pravdivets et al., , in: Advances in Optimization and Applications: 11th International Conference, OPTIMA 2020, Moscow, Russia, September 28 – October 2, 2020, Revised Selected PapersVol. 1340: Advances in Optimization and Applications.: Champaign: Springer Publishing Company, 2020. P. 211–223.
Added: December 16, 2022
A. A. Lazarev, Lemtyuzhnikova D. V., N. A. Pravdivets, Computational Mathematics and Mathematical Physics 2021 Vol. 61 No. 7 P. 1169–1180
Metric functions are introduced for various classes of single-machine scheduling problems.It is shown how approximate solutions of NP-hard problems can be found using these functions. The metric value is determined by solving a linear programming problem with constraints being systems of linear inequalities for polynomial or pseudopolynomial solvable instances of the problem under study.In fact, ...
Added: February 4, 2022
Ададуров С. Е., Алексеев А. М., Анисимов В. А. et al., М.: ООО "Издательство "ЛЕМА", 2020.
В коллективной монографии членов и научных партнеров Объединенного ученого совета ОАО «РЖД», объединяющего ведущих представителей отраслевой и фундаментальной российской науки, отражены ключевые вопросы научной поддержки перевозочного процесса и управления товарными потоками на железнодорожном транспорте, повышения эффективности его деятельности на основе клиентоориентированности и логистических принципов.
Рассмотрены системные вопросы развития логистических технологий, научные принципы прогнозирования и планирования железнодорожных ...
Added: February 4, 2022
Гришин Е. М., Lazarev A. A., Musatova E. G. et al., В кн.: Материалы 12-й мультиконференции по проблемам управления (МКПУ-2019, Дивноморское, Геленджик)Т. 1: XII МУЛЬТИКОНФЕРЕНЦИЯ ПО ПРОБЛЕМАМ УПРАВЛЕНИЯ.: Таганрог: Издательство Южного феделального университета, 2019. С. 178–181.
Рассмотрена задача построения графика проведения технического обслуживания локомотивов в объеме ТО-2 в пункте технического обслуживания локомотивов (ПТОЛ). Задано множество локомотивов, время их прибытия на ПТОЛ, продолжительность проведения ТО-2, характеристики и параметры ПТОЛ. На ПТОЛ можно выделить несколько групп ремонтных позиций определенной вместимости, на которых могут быть обслужены локомотивы разных серий, а также подъездные (тракционные) пути ...
Added: April 27, 2020
Гришин Е. М., Musatova E. G., Галахов С. А. et al., В кн.: Труды 8-ой научно-технической конференции с международным участием «Интеллектуальные системы управления на железнодорожном транспорте. Компьютерное и математическое моделирование» (ИСУЖТ-2019, Москва).: М.: ОАО "НИИАС", 2019. С. 115–119.
Россия является одним из мировых лидеров по протяженности железных дорог. Для обеспечения перевозок по такой обширной сети железных дорог необходимо использовать крупный парк локомотивов. В России насчитывается более 14 тысяч различных типов локомотивов (тепловозы, электровозы, газотурбовозы и др.). Каждая серия любого типа локомотивов имеет свои особенности при обслуживании. В силу большого разнообразия локомотивов весьма затруднительно ...
Added: April 27, 2020
Lazarev A. A., Куприянов Б. В., В кн.: XIII Всероссийское совещание по проблемам управления ВСПУ-2019: труды.: М.: ИПУ РАН, 2019. С. 1141–1145.
В статье вводится определение конвейера, описываемого связным ациклическим графом, каждая вершина которого, представляет собой операцию или функцию управления, ассоциированную с соответствующей рекурсивной функцией из некоторого конечного набора. Каждая рекурсивная функция определяет отношение предшествования операции конвейера. Рассматривается решение задачи минимизации времени выполнения заказа конвейером на конечном множестве возобновляемых ресурсов. Решение осуществляется методом Удовлетворения Ограничений, являющимся составной ...
Added: April 27, 2020