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Асимптотические разложения решений второго члена четвертой иерархии Пенлеве, продолжающие константную асимптотику при x→0
С. 33–39.
Language:
Russian
Keywords: уравнения Пенлеве
In book
Государственный социально-гуманитарный университет, 2021.
I. A. Bobrova, Sokolov V. V., Journal of Geometry and Physics 2023 Vol. 191 Article 104885
We find all non-abelian generalizations of P1 - P6 Painleve systems such that the corresponding autonomous system obtained by freezing the independent variable is integrable. All these systems have isomonodromic Lax representations. ...
Added: June 21, 2023
Bobrova I., Sokolov V., Journal of Nonlinear Mathematical Physics 2023 Vol. 30 No. 2 P. 646–662
All Hamiltonian non-abelian Painlevé systems of P1−P6 type with constant coefficients are found. For P1−P5 systems, we replace an appropriate inessential constant parameter with a non-abelian constant. To prove the integrability of new P′3 and P5 systems thus obtained, we find isomonodromic Lax pairs for them. ...
Added: December 23, 2022
Bibilo Y., Glutsyuk A., Nonlinearity 2022 Vol. 35 No. 10 P. 5427–5480
The tunnelling effect predicted by Josephson (Nobel Prize, 1973) concerns the Josephson junction: two superconductors separated by a narrow dielectric. It states existence of a supercurrent through it and equations governing it. The overdamped Josephson junction is modelled by a family of differential equations on two-torus depending on three parameters: B (abscissa), A (ordinate), ω ...
Added: December 20, 2022
Bobrova I., Теоретическая и математическая физика 2022 Т. 213 № 1 С. 65–94
We study auto-Bäcklund transformations of the nonstationary second Painlevé hierarchy $\rm{P}_{\rm{II}}^{(n)}$ depending on n parameters: a parameter $\alpha_n$ and times $t_1, …, t_{n−1}$. Using generators $s^{(n)}$ and $r^{(n)}$ of these symmetries, we construct an affine Weyl group $W^{(n)}$ and its extension $\tilde{W}^{(n)}$ associated with the nth member of the hierarchy. We determine rational solutions of $\rm{P}_{\rm{II}}^{(n)}$ in terms of Yablonskii–Vorobiev-type polynomials $u_m^{(n)} (z)$. We show that Yablonskii–Vorobiev-type polynomials are related to the polynomial τ-function $\tau_m^{(n)} (z)$ and find their determinant representation ...
Added: October 8, 2022
Anoshin V. I., Beketova A., Parusnikova A. et al., Programming and Computer Software 2022 Vol. 48 No. 1 P. 30–35
Asymptotic behavior and asymptotic expansions of solutions to the second term of the fourth Painlevé hierarchy are constructed using power geometry methods [1]. Only results for the case of general position—for the equation parameters β,δ≠0β,δ≠0—are provided. For constructing asymptotic expansions, a code written in a computer algebra system is used. ...
Added: February 5, 2022
Bobrova I., Mazzocco M., Journal of Geometry and Physics 2021 Vol. 166 Article 104271
In this paper we study the so-called sigma form of the second Painleve hierarchy. To obtain this form, we use some properties of the Hamiltonian structure of the second Painleve hierarchy and of the Lenard operator. ...
Added: September 25, 2021
Parusnikova A., Vasilyev A. V., Journal of Dynamical and Control Systems 2019 Vol. 25 No. 4 P. 681–690
In this paper, we study the third Painlevé equation with parameters γ = 0, αδ ≠ 0. The Puiseux series formally satisfying this equation (after a certain change of variables) asymptotically approximate of Gevrey order one solutions to this equation in sectors with vertices at infinity. We present a family of values of the parameters δ = −β^2/2 ≠ 0 such that ...
Added: June 4, 2019
Bershtein M., Shchechkin A., / Series math "arxiv.org". 2018.
Gamayun, Iorgov and Lisovyy in 2012 proposed that tau function of the Painlevé equation equals to the series of c=1 Virasoro conformal blocks. We study similar series of c=−2 conformal blocks and relate it to Painlevé theory. The arguments are based on Nakajima-Yoshioka blow-up relations on Nekrasov partition functions.
We also study series of q-deformed c=−2 ...
Added: November 22, 2018
Parusnikova A., Vasilyev A. V., / Series arXiv "math". 2017. No. 1702.05758.
In this paper we present a family of values of the parameters of the third Painlevé equation such that Puiseux series formally satisfying this equation -- considered as series of z^{2/3} -- are series of exact Gevrey order one. We prove the divergence of these series and provide analytic functions which are approximated by them ...
Added: February 21, 2017
Parusnikova A., Васильев А. В., Итоги науки и техники. Современная математика и ее приложения. Тематические обзоры 2017 Т. 139 С. 70–78
Проведено асимптотическое исследование третьих трансцендентов Пенлеве при α δ ≠ 0, γ = 0 в окрестности бесконечности в некотором секторе с углом раствора < 2 π методом доминантных мономов (англ. Method of dominant balance). Промежуточные результаты сравниваются с результатами, полученными при использовании методов трехмерной степенной геометрии. Найдены возможные асимптотики, выраженные в терминах эллиптических функций, а ...
Added: February 21, 2017
Васильев А. В., Parusnikova A., В кн.: Дифференциальные уравнения и смежные вопросы математики.Труды VIII Приокской научной конференции.: Государственный социально-гуманитарный университет, 2016. С. 34–43.
В данной работе для поиска асимптотик решений третьего уравнения Пенлеве в окрестности бесконечности применяются метод доминантных мономов и трехмерная степенная геометрия. ...
Added: February 21, 2017
Levin A., Olshanetsky M., Zotov A., Journal of Physics A: Mathematical and Theoretical 2016 Vol. 49 No. 39 P. 1–24
In this paper we suggest generalizations of elliptic integrable tops to matrix-valued variables. Our consideration is based on the R-matrix description which provides Lax pairs in terms of quantum and classical R-matrices. First, we prove that for relativistic (and non-relativistic) tops, such Lax pairs with spectral parameters follow from the associative Yang–Baxter equation and its ...
Added: September 17, 2016
Parusnikova A., В кн.: Математика, её приложения и математическое образование. Материалы V международной конференции.: Улан-Удэ: ВСГУТУ, 2014. С. 260–263.
Рассматриваются третье, четвёртое и пятое уравнения Пенлеве. Для этих уравнений в работах [1], [2], [6] указаны степенные разложения в виде степенных асимптотических рядов. Целью данного исследования является определение скорости роста коэффициентов указанных разложений путём определения соответствующих порядков Жевре. Также в работе дан ответ на вопрос, соответствуют ли полученным формальным разложениям "настоящие" решения уравнений Пенлеве, т.е., ...
Added: March 29, 2015
Parusnikova A., / Series "Working papers by Cornell University". 2014. No. 1412.6690.
In the first section of this work we introduce 4-dimensional Power Geometry for second-order ODEs of a polynomial form. In the next five sections we apply this construction to the first five Painlev ́e equations. ...
Added: March 28, 2015
Levin A., Ольшанецкий М. А., Зотов А. В., Успехи математических наук 2014 Т. 69 № 1(415) С. 39–124
В данной работе изомонодромные задачи описываются в терминах плоских G-расслоений на проколотых эллиптических кривых Σ_τ и связностей с регулярными особенностями в отмеченных точках. Расслоения классифицируются по их характеристическим классам, которые являются элементами группы вторых когомологий H^2(Σ_τ,Z(G)), где Z(G) – центр G. По каждой простой комплексной группе Ли G и произвольному характеристическому классу определяется пространство модулей ...
Added: January 21, 2015
Bruno A. D., Parusnikova A.V., Доклады Академии наук 2012 Vol. 85 No. 1 P. 87–92
By applying methods of power geometry, we find all asymptotic expansions of solutions to the fifth Painlevé equation near its nonsingular point for all values of its four complex parameters. More specifically, 10
families of expansions of solutions to the equation areobtained, of which one was not previously known.
Three expansions are Laurent series, while the remaining ...
Added: March 25, 2014
Parusnikova A., , in: Painlevé Equations and Related Topics.: Berlin: De Gruyter, 2012. Ch. 5 P. 33–38.
By means of Power Geometry we obtained all asymptotic expansions of solutions to the equation P5 of the following five types: power, power-logarithmic, complicated, exotic, and half-exotic, for all values of complex parameters of the equations. They form 16 and 30 families in the neighborhoods of singularpoints z=\infty and z=0, respectively. There are 10 families ...
Added: March 23, 2014