Colbrook, Matthew J.; Hansen, Anders C. On the infinite-dimensional QR algorithm. (English) Zbl 1530.65055 Numer. Math. 143, No. 1, 17-83 (2019). Reviewer: K. C. Sivakumar (Chennai) MSC: 65J10 47A10 46N40 × Cite Format Result Cite Review PDF Full Text: DOI arXiv OA License
Adcock, Ben; Hansen, Anders C. A generalized sampling theorem for stable reconstructions in arbitrary bases. (English) Zbl 1259.94035 J. Fourier Anal. Appl. 18, No. 4, 685-716 (2012). MSC: 94A20 42C40 65T60 × Cite Format Result Cite Review PDF Full Text: DOI arXiv
Hansen, Anders C. On the solvability complexity index, the \(n\)-pseudospectrum and approximations of spectra of operators. (English) Zbl 1210.47013 J. Am. Math. Soc. 24, No. 1, 81-124 (2011). Reviewer: Rudolf Kodnár (Bratislava) MSC: 68Q15 47A10 47A75 46L05 81Q10 81Q12 65J10 × Cite Format Result Cite Review PDF Full Text: DOI
Hansen, Anders C. On the approximation of spectra of linear operators on Hilbert spaces. (English) Zbl 1138.47002 J. Funct. Anal. 254, No. 8, 2092-2126 (2008). MSC: 47A10 47A58 47B25 15A90 × Cite Format Result Cite Review PDF Full Text: DOI