Mitrokhin, Sergeĭ Ivanovich Spectral properties of an even-order differential operator with a discontinuous weight function. (Russian. English summary) Zbl 1513.34087 Vestn. Ross. Univ., Mat. 27, No. 137, 37-57 (2022). MSC: 34B09 47J10 47E05 34L20 34L05 PDFBibTeX XMLCite \textit{S. I. Mitrokhin}, Vestn. Ross. Univ., Mat. 27, No. 137, 37--57 (2022; Zbl 1513.34087) Full Text: DOI MNR
Mitrokhin, Sergeĭ Ivanovich On the study of the spectral properties of differential operators with a smooth weight function. (Russian. English summary) Zbl 1482.34201 Vestn. Ross. Univ., Mat. 25, No. 129, 25-47 (2020). MSC: 34L05 34B09 34L20 34A45 34L10 PDFBibTeX XMLCite \textit{S. I. Mitrokhin}, Vestn. Ross. Univ., Mat. 25, No. 129, 25--47 (2020; Zbl 1482.34201) Full Text: DOI MNR