×

Found 42 Documents (Results 1–42)

On multiple completeness of root functions for ordinary differential polynomial pencils with constant coefficients. (English. Russian original) Zbl 1453.34030

J. Math. Sci., New York 250, No. 4, 683-704 (2020); translation from Sovrem. Mat., Fundam. Napravl. 63, No. 2, 340-361 (2017).
MSC:  34B09 34L10 47E05
PDFBibTeX XMLCite
Full Text: DOI

Replacement of finitely many elements in a system of root functions of a differential operator with preservation of the basis property. (English. Russian original) Zbl 0909.34072

Differ. Equations 33, No. 1, 32-37 (1997); translation from Differ. Uravn. 33, No. 1, 33-38 (1997).
MSC:  34L10 40A05 47E05
PDFBibTeX XMLCite

Darboux transformation, factorization, and supersymmetry in one-dimensional quantum mechanics. (English. Russian original) Zbl 0857.34070

Theor. Math. Phys. 104, No. 2, 1051-1060 (1995); translation from Teor. Mat. Fiz. 104, No. 2, 356-367 (1995).
PDFBibTeX XMLCite
Full Text: DOI

Trace formulas for a differential equation of even order with unbounded operator coefficient. (English. Russian original) Zbl 0765.34059

Sov. Math., Dokl. 43, No. 2, 406-410 (1991); translation from Dokl. Akad. Nauk SSSR 317, No. 3, 521-525 (1991).
MSC:  34L05 47E05 47A75
PDFBibTeX XMLCite

Filter Results by …

Document Type

all top 5

Year of Publication

all top 3

Main Field

Software