Kadchenko, Sergeĭ Ivanovich; Ryazanova, Lyubov’ Sergeevna Algorithms for finding asymptotic formulas for eigenvalues of discrete semi-bounded operators. (Algorithms invenire asymptotic formulas eigenvalues discreta semi-terminus operators.) (Russian. English summary) Zbl 1541.34104 Vestn. Yuzhno-Ural. Gos. Univ., Ser. Mat. Model. Program. 16, No. 2, 104-110 (2023). MSC: 34L16 34L20 39A12 × Cite Format Result Cite Review PDF Full Text: DOI MNR
Kadchenko, Sergeĭ Ivanovich; Stavtseva, Anastasiya Viktorovich; Ryazanova, Lyubov’ Sergeevna; Dubrovskiĭ, Vladislav Vladimirovich Algorithms for the computation of the eigenvalues of discrete semi-bounded operators defined on quantum graphs. (Russian. English summary) Zbl 1511.81056 Vestn. Yuzhno-Ural. Gos. Univ., Ser. Mat., Mekh., Fiz. 15, No. 1, 16-25 (2023). MSC: 81Q35 × Cite Format Result Cite Review PDF Full Text: DOI MNR
Kadchenko, S. I.; Pursheva, A. V.; Ryazanova, L. S. Solution of inverse spectral problems for discrete semi-bounded operators given on geometric graphs. (Russian. English summary) Zbl 07312378 Vestn. Yuzhno-Ural. Gos. Univ., Ser. Mat. Model. Program. 13, No. 4, 19-32 (2020). MSC: 65J22 × Cite Format Result Cite Review PDF Full Text: DOI MNR