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Ergodic semigroups of positivity preserving self-adjoint operators

โœ Scribed by Barry Simon


Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
227 KB
Volume
12
Category
Article
ISSN
0022-1236

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On Form-Sum Approximations of Singularly
โœ Sergio Albeverio; Volodymyr Koshmanenko ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 227 KB

We discuss singular perturbations of a self-adjoint positive operator A in Hilbert space H formally given by A T =A+T, where T is a singular positive operator (singularity means that Ker T is dense in H). We prove the following result: if T is strongly singular with respect to A in the sense that Ke