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Found 8 Documents (Results 1–8)

Quantization conditions on Riemannian surfaces and the semiclassical spectrum of the Schrödinger operator with complex potential. (English. Russian original) Zbl 1234.81077

Math. Notes 88, No. 2, 209-227 (2010); translation from Mat. Zametki 88, No. 2, 229-248 (2010).
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A functional model, eigenvalues, and finite singular critical points for indefinite Sturm-Liouville operators. (English) Zbl 1206.47040

Ball, Joseph A. (ed.) et al., Topics in operator theory. Volume 2: Systems and mathematical physics. Proceedings of the 19th international workshop on operator theory and applications (IWOTA), College of William and Mary, Williamsburg, VA, USA, July 22–26, 2008. A tribute to Israel Gohberg on the occasion of his 80th birthday. Basel: Birkhäuser (ISBN 978-3-0346-0160-3/hbk; 978-3-0346-0163-4/set; 978-3-0346-0161-0/ebook). Operator Theory: Advances and Applications 203, 247-287 (2010).
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