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On a finite element method for measure-valued optimal control problems governed by the 1D generalized wave equation
Comptes Rendus Mathematique. 2018. Vol. 356. No. 5. P. 523–531.
The paper deals with the optimal control problems governed by the 1D wave equation with variable coefficients and the control spaces of either measure-valued functions or vector measures. Bilinear finite element discretizations are constructed and their stability and error analysis is accomplished.
Teregulov T., Loubenets E. R., / Series Quantum Physics "arXiv". 2026. No. 2609.31472.
We develop a new three-party quantum secret-sharing (QSS) protocol based on a three-qubit W state. This protocol encodes the secret-sequence bits using X gates and employs randomly selected Hadamard operations and measurement bases to generate information and security-test rounds. We evaluate the efficiency of the proposed protocol and analyze its security against an internal adversary ...
Added: September 28, 2026
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
Papageorgiou K., Maxim Likhanov, Li J. et al., Personality and Individual Differences 2026 Vol. 263 Article 114019
Multivariate approaches are needed to gain a better understanding of the positive and negative impacts of Dark Triad traits within personality networks under different socio-cultural and personal conditions. In three independent studies in two countries (total N of participants = 4700), we applied network analyses and structural equation modeling to investigate the network of personality (Dark Triad ...
Added: September 18, 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
Бемлер Е. С., Хмельницкая Я. Е., Мониторинг общественного мнения: Экономические и социальные перемены 2026 Т. 194 № 4 С. 96–120
The article presents a study of resilience strategies of creative youth in the North Caucasus using the example of Pyatigorsk and Nalchik. The theoretical framework of the study combines a processual understanding of resilience with an interpretation of locality as a subjectively constructed connection to place, allowing for an analysis of the resilience of creative ...
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
Shabanov N., Kuricheva O., Kurbatova J. et al., / Series Working Papers SSRN "Department of Economics Ca’ Foscari University of Venice". 2026.
The carbon balance of an ecosystem is the difference between Gross Primary Productivity (GPP) and Ecosystem Respiration (Reco) as expressed by Net Ecosystem Exchange (NEE). While remote sensing retrievals of GPP have reached maturity, Reco estimation remains underexplored and ultimately cast bias on NEE. Here we present an end-to-end multi-scale analysis of the mechanism of ...
Added: August 21, 2026
Ponomarenko A., / Series Computer Science "arxiv.org". 2025.
This paper addresses the challenge of merging hierarchical navigable small world (HNSW) graphs, a critical operation for distributed systems, incremental indexing, and database compaction. We propose three algorithms for this task: Naive Graph Merge (NGM), Intra Graph Traversal Merge (IGTM), and Cross Graph Traversal Merge (CGTM). These algorithms differ in their approach to vertex selection ...
Added: July 30, 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
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
Левенков Я. Ю., Чичекин И. В., Вдовин Д. С. et al., Труды НАМИ 2025 № 1 (300) С. 17–30
Введение (постановка задачи и актуальность). В настоящее время широкое распространение получило использование автономных мобильных беспилотных транспортно-технологических средств (БТТС) при выполнении работ в зонах с вредными и опасными факторами. Также данные машины могут быть использованы для выполнения поисково-спасательных работ, доставки грузов в труднодоступные районы и иных подобных задач. Поэтому к таким БТТС предъявляются повышенные требования к ...
Added: April 16, 2026
Mikolaenko V., Koniushenko M., Стулков Л. Д., Механическое оборудование металлургических заводов 2025 № 2(25) С. 23–30
Uniaxial tensile testing of flat specimens under superplastic conditions is widely used to determine the deformation behavior of materials. However, the standard interpretation of the results relies on the hypothesis of an ideal uniaxial stress state and often fails to account for the influence of specimen geometry and material flow from the gripping zones to ...
Added: March 5, 2026
Shishkina E., Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria 2025
This article investigates the problem of approximating the generalized
Erdélyi-Kober fractional operator (often referred to as the Lowndes operator)
using cubic splines. A method based on cubic spline interpolation
is proposed for approximating the operator on a non-uniform grid. The
convergence rate of the proposed method is proven, and its stability is
analyzed. Error bounds are established for functions in ...
Added: March 2, 2026
Maltseva S. V., Голубцов П. В., Барахнин В. Б., Вычислительные технологии 2026 Т. 31 № 1 С. 5–22
The issues of macro-level monitoring of the manufacturing system in the implementation of the concepts of Industry 4.0 and 5.0 based on the study of information flows in manufacturing network structures are considered. The numerical models of three types of network interaction, that taking into account the influence of the number of objects, external influences, ...
Added: February 26, 2026
Мартынова И. А., Дакашева Т. М., В кн.: XLVIII Самарская областная студенческая научная конференция: тезисы докладовТ. 2.: Эко-Вектор, 2022. С. 176–177.
В процессе научно-технического прогресса, а также в связи с последними событиями на мировом пространстве, связанными с пандемией короновируса и другими непредвиденными изменениями, все интенсивнее возрастает потребность специалистов дать названия новым реалиям в своих исследованиях. ...
Added: February 4, 2026
Мартынова И. А., , in: The European Proceedings of Social and Behavioural Sciences: Global Challenges and Prospects of the Modern Economic DevelopmentVol. 106.: European Publisher, 2021. P. 2357–1330.
In the new challenging time, corporate social responsibility has become a central issue for universities to get through the crisis caused by COVID-19. Under the crisis success of universities is directly dependent on their students’ level of satisfaction. The higher their rate of satisfaction is the greater are the chances to succeed. Thus, one of ...
Added: February 4, 2026
Арженовский И. В., Региональная экономика и управление: электронный научный журнал 2021 № 3 (67) Статья 11
At the present stage, regional specializations are being formed in the framework of the next technological wave, which is characterized by digitalization, “green” economy, bio- and nanotechnology, knowledge-based economy, and growing attention to human capital. The changes resulting from the Covid-19 pandemic belong to these characteristics as well. The article analyzes the influence of these ...
Added: January 21, 2026