2018/10/11 by Fabio Bagarello, Bagarello, Fabio, Sergiusz Kuzhel +1
Engineering · Mathematics · Physics and Astronomy · #46N50 #81Q12 #FOS: Physical sciences #Mathematical Physics (math-ph) #Nonlinear Waves and Solitons #Numerical methods in engineering #Spectral Theory in Mathematical Physics
paper · pdf · doi:10.48550/arxiv.1810.05218
openalex publication_date 2018/10/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We analyse special classes of biorthogonal sets of vectors in Hilbert and in Krein spaces, and their relations with G- quasi bases. We also discuss their relevance in some concrete quantum mechanical system driven by manifestly non self-adjoint Hamiltonians.