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Found 20 Documents (Results 1–20)

Self-adjoint extensions of a symmetric linear relation with finite defect: compressions and Straus subspaces. (English) Zbl 1520.47005

Alpay, Daniel (ed.) et al., Complex function theory, operator theory, Schur analysis and systems theory. A volume in honor of V. E. Katsnelson. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 280, 287-325 (2020).
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Finite-dimensional self-adjoint extensions of a symmetric operator with finite defect and their compressions. (English) Zbl 06864062

Colombo, Fabrizio (ed.) et al., Advances in complex analysis and operator theory. Festschrift in honor of Daniel Alpay’s 60th birthday. Contributions partly based on the presentations at the international conference on complex analysis and operator theory, Chapman University, Orange, CA, USA, November 2016. Cham: Birkhäuser/Springer. Trends Math., 135-163 (2017).
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On the defect of noncontractive operators in Kreĭn spaces: A new formula and some applications. (English) Zbl 0931.47027

Dijksma, A. (ed.) et al., Contributions to operator theory in spaces with an indefinite metric. The Heinz Langer anniversary volume on the occasion of his 60th birthday. Basel: Birkhäuser. Oper. Theory, Adv. Appl. 106, 91-112 (1998).
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Contractive linear relations in Pontryagin spaces. (English) Zbl 0911.47029

Gohberg, I. (ed.) et al., Recent progress in operator theory. Vol. II. Proceedings of the international workshop on operator theory and applications, IWOTA 95, Regensburg, Germany, July 31-August 4, 1995. Basel: Birkhäuser. Oper. Theory, Adv. Appl. 103, 19-51 (1998).
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Operator theory and ordinary differential operators. (English) Zbl 0883.47018

Böttcher, Albrecht (ed.) et al., Lectures on operator theory and its applications, Fields Institute for Research in Mathematical Sciences, Toronto, Canada 1994. Providence, RI: American Mathematical Society. Fields Inst. Monogr. 3, 75-139 (1996).
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Interpolation problems, extensions of symmetric operators and reproducing kernel spaces. I. (English) Zbl 0737.47016

Topics in matrix and operator theory, Proc. Workshop, Rotterdam/Neth. 1989, Oper. Theory, Adv. Appl. 50, 35-82 (1991).
Reviewer: J.Durdil (Praha)
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