Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Elena V. Konstantinova"'
Publikováno v:
Electronic Journal of Mathematics, Vol 7, Pp 45-57 (2024)
Externí odkaz:
https://doaj.org/article/2d17d9e542394aa7aae4b3cc633a3279
Publikováno v:
Discussiones Mathematicae Graph Theory, Vol 44, Iss 4, p 1551 (2024)
Externí odkaz:
https://doaj.org/article/1cad0ecafb3b4afc86c47d31f0157eec
Autor:
Yan V. Shokin, Elena V. Konstantinova
Publikováno v:
Вестник Воронежского государственного университета: Серия экономика и управление, Iss 3 (2020)
Предмет. Предметом исследования влияние ценовых и неценовых факторов на потребительское поведение на рынке образовательных услуг. Цел
Externí odkaz:
https://doaj.org/article/3ed1dca5d9104e31827dcbabc4f21140
Publikováno v:
Discrete Mathematics. 346:113384
We present a construction of Neumaier graphs with nexus 1, which generalises two known constructions of Neumaier graphs. We also use W. Wang, L. Qiu, and Y. Hu switching to show that we construct cospectral Neumaier graphs. Finally, we show that seve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c55a90b7a3069901da54361513168f7
https://doi.org/10.1016/j.disc.2023.113384
https://doi.org/10.1016/j.disc.2023.113384
Publikováno v:
Linear Algebra and its Applications. 610:222-226
We consider the symmetric group Sym Ω with Ω = { 1 , … , n } for any integer n ⩾ 2 and a set S = { ( 1 i ) , i ∈ { 2 , … , n } } . The Star graph S n = Cay ( Sym Ω , S ) is the Cayley graph over the symmetric group Sym Ω with the generati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::345018ab166b525110413be619414d27
https://doi.org/10.1016/j.laa.2020.09.042
https://doi.org/10.1016/j.laa.2020.09.042
Publikováno v:
Linear Algebra and its Applications. 604:476-489
Dual Seidel switching is a graph operation introduced by W. Haemers in 1984. This operation can change the graph, however it does not change its bipartite double, and because of this, the operation leaves the squares of the eigenvalues invariant. Thu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10f03f73ffd374de4a52120ef2a354e6
https://doi.org/10.1016/j.laa.2020.07.010
https://doi.org/10.1016/j.laa.2020.07.010
Autor:
Elena V. Konstantinova, D. V. Lytkina
Publikováno v:
Algebra Colloquium. 27:131-136
We prove that the spectrum of a Cayley graph over a finite group with a normal generating set S containing with every its element s all generators of the cyclic group 〈s〉 is integral. In particular, a Cayley graph of a 2-group generated by a norm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8621dc4622d22c68143c619bc3e6ba2b
https://doi.org/10.1142/s1005386720000115
https://doi.org/10.1142/s1005386720000115
Autor:
Elena V. Konstantinova, Saieed Akbari, Amir Hossein Ghodrati, Mohammad Ali Hosseinzadeh, Vladislav V. Kabanov, Leonid Shalaginov
Publikováno v:
Linear and Multilinear Algebra. 70:310-321
A Deza graph with parameters (n,k,b,a) is a k-regular graph with n vertices such that any two of its vertices have b or a common neighbours, where b≥a. In this paper we investigate spectra of Deza ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b696db8790df7f18e82b8ed9d46f7cea
https://doi.org/10.1080/03081087.2020.1723472
https://doi.org/10.1080/03081087.2020.1723472
Autor:
Sergey Goryainov, Leonid Shalaginov, Vladislav V. Kabanov, Elena V. Konstantinova, Alexandr Valyuzhenich
Publikováno v:
Linear Algebra and its Applications. 586:7-27
We consider the symmetric group Sym n , n ⩾ 2 , generated by the set S of transpositions ( 1 i ) , 2 ⩽ i ⩽ n , and the Cayley graph S n = C a y ( Sym n , S ) called the Star graph. For any positive integers n ⩾ 3 and m with n > 2 m , we prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f16a668c9d0d9c87906ac377d4f5d82
https://doi.org/10.1016/j.laa.2019.10.018
https://doi.org/10.1016/j.laa.2019.10.018
Autor:
Elena V. Konstantinova, Artem Kravchuk
Transposition graph $T_n$ is defined as a Cayley graph over the symmetric group generated by all transpositions. It is known that all eigenvalues of $T_n$ are integers. However, an explicit description of the spectrum is unknown. In this paper we pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8de01df854322cbc51e38dfcb736ef1
