Continuing the analysis undertaken in previous articles, we discuss some features of non-self-adjoint operators and sesquilinear forms which are defined starting from two biorthogonal families of vectors, like the so-called generalized Riesz systems, enjoying certain properties. In particular, we discuss what happens when they forms two D-quasi-bases.
|Numero di pagine||13|
|Rivista||Journal of Mathematical Physics|
|Stato di pubblicazione||Published - 2018|
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