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Found 23 Documents (Results 1–23)

On the extension of a family of projections to a positive operator-valued measure. (English. Russian original) Zbl 1522.81036

Vestn. St. Petersbg. Univ., Math. 56, No. 1, 1-8 (2023); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 10(68), No. 1, 3-13 (2023).
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Conservation of pseudo-norm in \({\mathcal P}{\mathcal T}\) symmetric quantum mechanics. (English) Zbl 1052.46010

Slovák, Jan (ed.) et al., The proceedings of the 23th winter school “Geometry and physics”, Srní, Czech Republic, January 18–25, 2003. Palermo: Circolo Matemàtico di Palermo. Suppl. Rend. Circ. Mat. Palermo, II. Ser. 72, 211-218 (2004).
MSC:  46C20 34M15 81Q10
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\(CQ^\ast\)-algebras of operators and application to quantum models. (English) Zbl 1047.46044

Begehr, Heinrich G. W. (ed.) et al., Proceedings of the second ISAAC congress. Vol. 1. Proceedings of the International Society for Analysis, its Applications and Computation congress, Fukuoka, Japan, August 16–21, 1999. Dordrecht: Kluwer Academic Publishers (ISBN 0-7923-6597-6/hbk). Int. Soc. Anal. Appl. Comput. 7, 679-685 (2000).
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Quantum-mechanical models in \(R_ n\) associated with extensions of the energy operator in a Pontryagin space. (English. Russian original) Zbl 0685.46047

Theor. Math. Phys. 74, No. 3, 220-230 (1988); translation from Teor. Mat. Fiz. 74, No. 3, 331-344 (1988).
Reviewer: C.J.Henrich
MSC:  46N99 46C20 81Q10
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