Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Abramov, Sergei"'
Autor:
Abramov, Sergei, Pogudin, Gleb
For a linear difference equation with the coefficients being computable sequences, we establish algorithmic undecidability of the problem of determining the dimension of the solution space including the case when some additional prior information on
Externí odkaz:
http://arxiv.org/abs/2311.02219
Autor:
Abramov, Sergei, Pogudin, Gleb
Publikováno v:
ACM Communications in Computer Algebra, vol 57, issue 1, 2023
The notion of lacunary infinite numerical sequence is introduced. It is shown that for an arbitrary linear difference operator L with coefficients belonging to the set R of infinite numerical sequences, a criterion (i.e., a necessary and sufficient c
Externí odkaz:
http://arxiv.org/abs/2311.02217
Autor:
Abramov, Sergei, Pogudin, Gleb
Publikováno v:
In Journal of Symbolic Computation March-April 2025 127
We present a complete algorithm that computes all hypergeometric solutions of homogeneous linear difference equations and rational solutions of parameterized linear difference equations in the setting of $\Pi\Sigma^*$-fields. More generally, we provi
Externí odkaz:
http://arxiv.org/abs/2005.04944
While Liouvillian sequences are closed under many operations, simple examples show that they are not closed under convolution, and the same goes for d'Alembertian sequences. Nevertheless, we show that d'Alembertian sequences are closed under convolut
Externí odkaz:
http://arxiv.org/abs/1803.08747
Publikováno v:
In Journal of Symbolic Computation November-December 2021 107:23-66
Publikováno v:
In Journal of Symbolic Computation November-December 2020 101:73-89
Autor:
Plotinskaya, Olga Y., Azovskova, Oksana B., Abramov, Sergei S., Groznova, Elena O., Novoselov, Konstantin A., Seltmann, Reimar, Spratt, John
Publikováno v:
In Ore Geology Reviews March 2018 94:239-260
Autor:
Moroldoev, Igor V., Litvinov, Yuri N., Lopatina, Natalia V., Abramov, Sergei A., Zadubrovskiy, Pavel A., Babina, Svetlana G.
This short communication reports the initial results of the experimental reintroduction of the Olkhon mountain vole Alticola olchonensis, an endemic mammal species of the Lake Baikal area. In 2019–2020, several dozen young individuals born in the v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13f424946c23896f1dbb0f88afbdea0b
Autor:
Abramov, Sergei, Barkatou, Moulay
Publikováno v:
ACM Communications in Computer Algebra
ACM Communications in Computer Algebra, Association for Computing Machinery (ACM), 2019, 53 (1), pp.23-30. ⟨10.1145/3363520.3363522⟩
ACM Communications in Computer Algebra, Association for Computing Machinery (ACM), 2019, 53 (1), pp.23-30. ⟨10.1145/3363520.3363522⟩
International audience
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::25a4601cfd05a5c09fe843a2483717fb
https://hal.archives-ouvertes.fr/hal-02393890
https://hal.archives-ouvertes.fr/hal-02393890