Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Michal Marvan"'
Autor:
Michal Marvan
Addressing a long-standing problem, we show that every van Stockum dust can be matched to a 1-parametric family of non-static Papapetrou vacuum metrics, and the converse. The boundary, if existing, is determined by vanishing of certain first-order in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::893e1846ad99893274bf863cfc4866ad
Autor:
Viktor M Buchstaber, N. G. Khor'kova, A. P. Krishchenko, Y. Kosmann-Schwarzbach, Albert Schwarz, Alexander S. Mishchenko, Iosif Krasil'shchik, Th. Th. Voronov, Victor Pavlovich Maslov, A. B. Sossinsky, Victor A. Vassiliev, V. N. Chetverikov, A. V. Bocharov, A. M. Astashov, Raffaele Vitolo, Igor Krichever, Michal Marvan, Dmitrii Borisovich Fuchs, J. Stasheff, Irina Viktorovna Astashova, A. Ya. Khelemsky, M. M. Vinogradov, L. Vitagliano, Alexander P. Veselov, Sergei K. Lando, A. M. Verbovetsky, V. N. Rubtsov, Valentin Lychagin, A. V. Samokhin, S. P. Novikov, Anatolii Moiseevich Vershik, Victor G. Kac
Publikováno v:
Russian Mathematical Surveys. 75:369-375
Autor:
Aleksei Bronislavovich Sosinskii, Aleksandr Petrovich Veselov, Michal Marvan, Dmitrii Borisovich Fuchs, Sergei Petrovich Novikov, Alexander Petrovich Krishchenko, Alexey Vasil'yevich Samokhin, Theodore Theodorovich Voronov, Victor Pavlovich Maslov, Фeдор Фeдорович Воронов, Iosif Semenovich Krasil'shchik, Sergei K. Lando, Michael M. Vinogradov, Yvette Kosmann-Schwarzbach, Victor A. Vassiliev, Victor G. Kac, Raffaele Vitolo, A. M. Astashov, Alexandr Sergeevich Mishchenko, Albert Schwarz, Igor Krichever, Vladimir Nikolaevitch Chetverikov, Nina Grigor'evna Khor'kova, J. Stasheff, Vladimir Nikolaevich Rubtsov, Aleksei Vadimovich Bocharov, Victor Matveevich Buchstaber, Alexander Yakovlevich Helemskii, Anatolii Moiseevich Vershik, Valentin Vasil'evich Lychagin, L. Vitagliano, Irina Viktorovna Astashova, Alexander Verbovetsky
Publikováno v:
Uspekhi Matematicheskikh Nauk. 75:185-190
Autor:
Michal Marvan, D. Catalano Ferraioli
Publikováno v:
Annali di Matematica Pura ed Applicata (1923 -). 199:1343-1380
We consider the equivalence problem of four-dimensional semi-Riemannian metrics with the two-dimensional Abelian Killing algebra. In the generic case we determine a semi-invariant frame and a fundamental set of first-order scalar differential invaria
Autor:
Michal Marvan, Maxim V. Pavlov
Publikováno v:
Wave Motion. 74:151-158
We construct a point transformation between two integrable systems, the multi-component Harry Dym equation and the multi-component extended Harry Dym equation, that does not preserve the class of multi-phase solutions. As a consequence we obtain a ne
Autor:
Michal Marvan, Maxim V. Pavlov
Earlier the theory of finite-gap integration was successfully applied to finite-component systems only. In this paper, we consider a first example of infinitely many component integrable systems. We construct multi-phase solutions for integrable disp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8896ab522732afd3fd0fc6456bf8823d
http://arxiv.org/abs/1802.10154
http://arxiv.org/abs/1802.10154
We study the Gibbons-Tsarev equation $z_{yy} + z_x z_{xy} - z_y z_{xx} + 1 = 0$ and, using the known Lax pair, we construct infinite series of conservation laws and the algebra of nonlocal symmetries in the covering associated with these conservation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7aa179465e44a02dcc3f4e67e5b6c70a
Autor:
Adam Hlaváč, Michal Marvan
Publikováno v:
Journal of Geometry and Physics. 85:88-98
We show that the solutions of the constant astigmatism equation that correspond to a class of surfaces found by Lipschitz in 1887, exactly match the Lie symmetry invariant solutions and constitute a four-dimensional manifold. The two-dimensional orbi
Autor:
H. Baran, Michal Marvan
Publikováno v:
Nonlinearity. 23:2577-2597
In this paper we classify Weingarten surfaces integrable in the sense of soliton theory. The criterion is that the associated Gauss equation possesses an sl(2)-valued zero curvature representation with a nonremovable parameter. Under certain restrict
Autor:
Michal Marvan
Publikováno v:
Acta Applicandae Mathematicae. 109:239-255
We consider the problem whether a nonparametric zero-curvature representation can be embedded into a one-parameter family within the same Lie algebra. After introducing a computable cohomological obstruction, a method using the recursion operator to