Levashev V., / Series arXiv "math". 2026. No. 2609.06010.
We prove that continuous A-bilinear pairings on the ring of Laurent series that are invariant under continuous automorphisms coincide, up to a constant, with the pairing given by the residue of a differential form over any commutative associative ring with identity. ...
Added: September 24, 2026
Pyatov P. N., Pivovarov P. A., / Series math "arxiv.org". 2026. No. 2609.06274.
We investigate a special ansats that allows for an iterative solution of the constant Yang-Baxter equation. Testing this ansatz, we construct four sequences of the constant R-matrices. In each sequence the R-matrices act on the tensor squares of vector spaces of linearly growing dimensions. Each R-matrix also depends on a single complex parameter.
By analyzing the ...
Added: September 24, 2026
Medvedev V., / Series arXiv "math". 2026.
We study complete static manifolds with boundary admitting a nowhere-vanishing static potential. Our main result shows that, under a natural lower bound relating the scalar curvature and the boundary mean curvature, a simple static manifold with boundary must in fact have positive scalar curvature, negative boundary mean curvature, and be compact; we also obtain explicit ...
Added: September 19, 2026
Poddiakov A., / Series Social Science Research Network "Social Science Research Network". 2026. No. 7437658.
Clarity of knowledge and reasoning is necessary in many cases. Yet vagueness in scientific thinking related to surprise, curiosity, "ability to engage with not-knowing" (de Freitas) and abductive reasoning is also a crucially important source of scientific creativity which supplements combinatorial logic when dealing with the already known. Starting from studies by C. S. Peirce ...
Added: September 15, 2026
/ Series SSRN Working Paper Series "SSRN Working Paper Series". 2026.
Assessment item development requires careful control of construct alignment, response structure, difficulty, language, and review evidence. Large language models can accelerate item drafting, but ad hoc prompting is difficult to audit or reproduce. AIGRA is an R package for structured, agentic item generation, review, and analysis. It supports tabular item-bank templates, Python-backed generation workflows, direct ...
Added: September 14, 2026
Glutsyuk A., / Series arXiv "math". 2026.
B.Josephson (Nobel Prize, 1973) predicted a tunnelling effect for a system of two superconductors separated by a narrow dielectric (such a system is called Josephson junction): existence of a supercurrent through it and equations governing it. The overdamped Josephson junction is modeled by the family of differential equations on the 2-torus, dθdτ=1ω(cosθ+B+Acosτ), which is known as ...
Added: September 8, 2026
Pochinka O., Shmukler V., / Series math.RT "arXiv:1808.06395 [math.RT]". 2026.
Anosov flows have a long and rich history, firstly motivated by the
study of geodesic flows in negative curvature surface by Anosov and Sinai.
Not every closed manifold admits an Anosov flow for well-known reasons:
the fundamental group of a 3-manifold M admitting an Anosov flow must
have exponential growth, and M must be universally covered by R3. Nevertheless,
there ...
Added: August 31, 2026
Loubenets E. R., / Series arxiv.org "quant-ph". 2026. No. 2607.18050.
In many quantum applications it is important to know whether or not a Bell nonlocal two-qudit state exhibits its nonlocality under correlation scenarios with some given numbers S1,S2≥1 of generalized quantum measurements at two sites. In the present article, we find analytically a new general locality condition sufficient for a nonseparable Werner state with a ...
Added: July 21, 2026
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
Kudriavtseva E., / РЦИС. Серия № 0148-756-286. 2026.
The content of the work is the system is a system for identifying four types of written speech structures. A set of 11 calculated parameters, statistical standards, and semantic characteristics allows for the identification of a text's structure as the result of a specific cognitive schema (scene, event, story, evaluation). The method has been verified ...
Added: June 2, 2026
Vorchik A., / SSRN. Серия Social Science Research Network "Social Science Research Network". 2026.
This work is devoted to a theoretical explanation of the Easterlin paradox, according to which long-term economic growth does not make average level of people's happiness increasing. By happiness, we mean the intensity of emotions people experience while comparing their new income with its expected value, or the target income with its original value. In the first case, ...
Added: May 31, 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
Dvoinin A., Информация и образование: границы коммуникаций 2025 Т. 25 № 17 С. 125–127
The article discusses problems of applying statistical methods in pedagogical research: the lack of informative indicators, template types of analysis, fabrication of calculations, p-hacking and others. ...
Added: August 19, 2025
Poddiakov A., В кн.: Психология познания: материалы Всероссийской научной конференции. ЯрГУ, 6–8 декабря 2024 г. Материалы Всероссийской научной конференции памяти Дж. С. Брунера.: Яр.: ЯрГУ им. П. Г. Демидова, 2024. С. 245–249.
Нетранзитивные отношения превосходства (доминирования) по принципу «камень-ножницы-бумага» представляют, по мнению некоторых авторов, вызов человеческому разуму. Следуя «страсти к парадоксам» и отвечая на вызов, исследователи изобретают всё новые нетранзитивные математические объекты и их типы, а также методично исследуют возможности некоторых уже известных. Обсуждается внешняя и внутренняя мотивация этой деятельности, разнообразие целей по мере продвижения в теме ...
Added: December 24, 2024
М.: Институт психологии РАН, 2023.
Настоящее издание включает материалы исследований, представленных российскими и зарубежными учеными на международной научной конференции «Математическая психология: современное состояние и перспективы», посвященной 90‑летию со дня рождения В. Ю. Крылова. Содержание работ охватывает различные направления математической психологии и отражает ее современное состояние в России. ...
Added: April 16, 2024
Вакаки Х., В. В. Ульянов, Теория вероятностей и ее применения 2023 Т. 68 № 4 С. 705–718
Asymptotic expansions for the distribution function of Bartlett–Nand–Pillai statistics are constructed, provided that the null linear hypothesis is valid in a multidimensional linear model.
At the same time, computable estimates of the accuracy of the approximation are obtained
using the Laplace approximation method, which is generalized
to integrals of matrix-valued functions. ...
Added: December 1, 2023
Burovskiy E., Grishunina Y., М.: Издательский дом НИУ ВШЭ, 2022.
Учебное пособие содержит теоретические сведения, касающиеся основных задач математической статистики: определения, формулировки теорем, необходимые формулы. Для каждой задачи приведена постановка, указан метод ее решения с подробными комментариями, перечислены функции и методы языка программирования Python, которые рекомендуется применять при проведении вычислений, проведен анализ конкретных статистических данных.
Предназначено для студентов всех специальностей и направлений подготовки, изучающих дисциплину «Теория ...
Added: September 28, 2022
Tolstova Y., Социологические исследования 2019 № 1 С. 145–149
The aim of this article is to draw sociologists’ attention to the works of Russian statistics, mathematics, sociologist Alexander Alexandrovich Chuprov (1874–1926). A renowned scholar, whose work is highly valued by his contemporaries, is now virtually forgotten. However, his major works were republished in 1960s, it was carried out a critical analysis of them from ...
Added: March 16, 2022
Golovan S. V., Katyshev P., Peresetsky A., Издательский дом «Дело» РАНХиГС, 2022.
Настоящая книга является сборником задач по применению методов и понятий математической статистики. Книга содержит 384 задачи с подробными решениями. Набор задач составлен на основании более чем 25-летнего опыта авторов по преподаванию математической статистики для студентов-магистров специальности «экономика» Российской экономической школы (РЭШ) и Московского института экономики и финансов НИУ ВШЭ, а также для студентов специальностей «математические методы в экономике», «прикладная экономика», ...
Added: December 17, 2021
Borzykh D., ЛЕНАНД, 2021.
Пособие предназначено для проведения практических занятий по курсу «Математическая статистика» для студентов экономических специальностей. Оно также может быть использовано при самостоятельном изучении предмета благодаря очень большому количеству подробно решенных задач.
В предлагаемом пособии содержатся задачи различного уровня сложности. Однако основной акцент сделан на задачах средней сложности. Это сделано намеренно, с тем, чтобы побудить студентов к самостоятельному решению задач: слишком простые ...
Added: January 30, 2021