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Found 20 Documents (Results 1–20)

Spectral properties of a differential operator with involution. (English. Russian original) Zbl 1510.34139

Mosc. Univ. Math. Bull. 77, No. 4, 204-208 (2022); translation from Vestn. Mosk. Univ., Ser. I 77, No. 4, 67-71 (2022).
MSC:  34K08
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Spectral properties of ordinary differential operators with involution. (English. Russian original) Zbl 1418.34156

Dokl. Math. 99, No. 1, 5-10 (2019); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 484, No. 1, 12-17 (2019).
MSC:  34L10 47E05 34B05
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Basicity properties of eigenfunctions of the periodic problem for differential operator \(Lu = - u''(- x) + q(x)u(x)\). (English) Zbl 1491.34094

Kal’menov, Tynysbek (ed.) et al., International conference ‘Functional analysis in interdisciplinary applications’, FAIA2017, Astana, Kazakhstan, October 2–5, 2017. Proceedings. Melville, NY: American Institute of Physics (AIP). AIP Conf. Proc. 1880, 050015, 7 p. (2017).
MSC:  34L10
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On a class of inverse problems for a parabolic equation with involution. (English) Zbl 1486.35251

Kal’menov, Tynysbek (ed.) et al., International conference ‘Functional analysis in interdisciplinary applications’, FAIA2017, Astana, Kazakhstan, October 2–5, 2017. Proceedings. Melville, NY: American Institute of Physics (AIP). AIP Conf. Proc. 1880, 040021, 6 p. (2017).
MSC:  35K20 35C10 35R30
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Criterion for the basis property of the eigenfunction system of a multiple differentiation operator with an involution. (English. Russian original) Zbl 1268.47053

Differ. Equ. 48, No. 8, 1112-1118 (2012); translation from Differ. Uravn. 48, No. 8, 1126-1132 (2012).
MSC:  47E05 34L10 34L99
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On the basis properties of root functions of two generalized eigenvalue problems. (English. Russian original) Zbl 1280.34084

Differ. Equ. 48, No. 2, 306-308 (2012); translation from Differ. Uravn. 48, No. 2, 294-296 (2012).
MSC:  34L10 34B08
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