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On an Optimal Control Problem for the Wave Equation in One Space Dimension Controlled by Third Type Boundary Data
Ch. 10. P. 223–238.
In the present paper we study the boundary control by the third boundary condition on the left end of a string, the right end being fixed. An optimality criterion based on the minimization of an integral of a linear combination of the control itself and its antiderivative raised to an arbitrary power p≥1 is established. A method is developed permitting one to find a control satisfying this optimality criterion and write it out in the explicit form. The optimal control for p>1 is proved. Thereby proposed optimality criterion uniquely determines the optimal solution of boundary control problem under consideration.
Брауэр О., Buryak A., Функциональный анализ и его приложения 2021 Т. 55 № 4 С. 22–39
In a recent paper, given an arbitrary homogeneous cohomological field theory (CohFT), Rossi, Shadrin, and the first author proposed a simple formula for a bracket on the space of local functionals, which conjecturally gives a second Hamiltonian structure for the double ramification hierarchy associated to the CohFT. In this paper we prove this conjecture in ...
Added: September 14, 2022
Arsie A., Buryak A., Lorenzoni P. et al., Communications in Mathematical Physics 2021 Vol. 388 P. 291–328
We define the double ramification hierarchy associated to an F-cohomological field theory and use this construction to prove that the principal hierarchy of any semisimple (homogeneous) flat F-manifold possesses a (homogeneous) integrable dispersive deformation at all orders in the dispersion parameter. The proof is based on the reconstruction of an F-CohFT starting from a semisimple ...
Added: October 29, 2021
Buryak A., Rossi P., Shadrin S., Letters in Mathematical Physics 2021 Vol. 111 Article 13
We propose a remarkably simple and explicit conjectural formula for a bihamiltonian structure of the double ramification hierarchy corresponding to an arbitrary homogeneous cohomological field theory. Various checks are presented to support the conjecture. ...
Added: October 29, 2021
Buryak A., Rossi P., Bulletin of the London Mathematical Society 2021 Vol. 53 No. 3 P. 843–854
In this paper we compute the intersection number of two double ramification (DR) cycles (with different ramification profiles) and the top Chern class of the Hodge bundle on the moduli space of stable curves of any genus. These quadratic DR integrals are the main ingredients for the computation of the DR hierarchy associated to the ...
Added: February 1, 2021
Brauer Gomez O., Buryak A., Journal of High Energy Physics 2021 Vol. 2021 P. 1–15
The paper is devoted to the open topological recursion relations in genus 1, which are partial differential equations that conjecturally control open Gromov-Witten invariants in genus 1. We find an explicit formula for any solution analogous to the Dijkgraaf-Witten formula for a descendent Gromov-Witten potential in genus 1. We then prove that at the approximation ...
Added: February 1, 2021
Mazzucchi S., Moretti V., Remizov I. et al., / Series arXiv "math". 2020.
Feynman formulas are representations of solutions to initial value problems, for some parabolic and Schrödinger equations, by the limits of integrals over finite Cartesian powers of some spaces. Two versions of these formulas which were suggested by Feynman himself are associated with names of Trotter and Chernoff respectively. These formulas can be interpreted as approximations ...
Added: August 10, 2020
Nikitin A. A., Доклады Академии наук 2006 Т. 406 № 4 С. 458–461
Added: September 29, 2013
Nikitin A. A., Доклады Академии наук 2007 Т. 417 № 6 С. 743–745
Added: September 24, 2013
A. L. Beklaryan, Russian Journal of Mathematical Physics 2012 Vol. 19 No. 4 P. 509–510
The problem mentioned in the title is studied. ...
Added: June 6, 2013
Бекларян А.Л., В кн.: Dynamic Systems, Nonlinear Analysis and Application, Materials of the international conference. Yerevan, 2011.: М.: ЦЭМИ РАН, 2011. С. 37–39.
We consider the first boundary value problem for elliptic systems defined in unbounded domains, which solutions satisfy the condition of finiteness of the Dirichlet integral also called the energy integral. ...
Added: June 6, 2013
A.L.Beklaryan, , in: II International Conference Optimization and Application (OPTIMA-2011).: M.: -, 2011. P. 35–35.
We consider the first boundary value problem for elliptic systems defined in unbounded domains, which solutions satisfy the condition of finiteness of the Dirichlet integral also called the energy integral. ...
Added: June 5, 2013
Armen Beklaryan, , in: III International Conference on Optimization Methods and Application (OPTIMA-2012), Costa da Caparica, Portugal, september 2012.: M.: -, 2012. P. 47–50.
We consider the first boundary value problem for elliptic systems defined in unbounded domains, which solutions satisfy the condition of finiteness of the Dirichlet integral also called the energy integral. ...
Added: June 5, 2013
Chepyzhov V. V., Conti M., Pata V., Discrete and Continuous Dynamical Systems 2012 Vol. 32 No. 6 P. 2079–2088
For a semigroup $S(t):X\to X$ acting on a metric space $(X,\dist)$, we give a notion of global attractor
based only on the minimality with respect to the attraction property. Such an attractor is shown to be invariant whenever $S(t)$ is
asymptotically closed. As a byproduct, we generalize earlier results on the existence of global attractors in the ...
Added: February 22, 2013
Вишик М. И., Зелик С. В., Chepyzhov V. V., Математический сборник 2013 Т. 204 № 1 С. 3–46
We study regular global attractors of dissipative dynamical semigroups with discrete and continuous time and we
investigate attractors for non-autonomous perturbations of such semigroups. The main theorem states that regularity of global
attractors preserves under small non-autonomous perturbations. Besides, non-autonomous regular global attractors remain
exponential and robust. We apply these general results to model non-autonomous reaction-diffu\-sion systems in ...
Added: February 17, 2013
М.: МЭСИ, 2011.
В сборнике трудов конференции рассматриваются актуальные вопросы качественной теории обыкновенных дифференциальных уравнений. Изучаются, в частности, такие известные задачи, как задача Изобова для трехмерного случая, задача Штурма-Лиувилля, асимптотического представления решений уравнений высших порядков, краевые задачи, вырожденные автономные системы и др. ...
Added: January 15, 2013
М.: МЭСИ, 2011.
В сборнике трудов конференции рассматриваются актуальные вопросы качественной теории обыкновенных дифференциальных уравнений, а также их приложения в различных областях исследований. Изучаются, в частности, такие известные задачи, как задача Штурма-Лиувилля, краевые задачи для эллиптических систем, частично вырожденные автономные системы и др. Приводятся результаты приложений математических исследований к анализу рынков ценных бумаг, моделирования процентных ...
Added: January 15, 2013