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Quasi-selfadjoint extensions of dual pairs of linear relations

Functional Analysis 2024-04-04 v1 Spectral Theory

Abstract

This paper investigates quasi-selfadjoint extensions of dual pairs of linear relations in Hilbert spaces. Some properties of dual pairs of linear relations are given and an Hermitian linear relation associated with a dual pair of linear relations is introduced. Necessary and sufficient conditions for quasi-selfadjoint extensions of dual pairs of linear relations are obtained. These results extends the corresponding results for dual pairs of linear operators to dual pairs of linear relations.

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Cite

@article{arxiv.2404.02355,
  title  = {Quasi-selfadjoint extensions of dual pairs of linear relations},
  author = {Guixin Xu and Guojing Ren},
  journal= {arXiv preprint arXiv:2404.02355},
  year   = {2024}
}

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14 pages