Christensen, Ole; Hasannasab, Marzieh Completion versus removal of redundancy by perturbation. (English) Zbl 1495.42016 Can. Math. Bull. 65, No. 2, 456-465 (2022). Reviewer: Mehdi Rashidi-Kouchi (Kerman) MSC: 42C15 42C40 42C30 11B50 PDFBibTeX XMLCite \textit{O. Christensen} and \textit{M. Hasannasab}, Can. Math. Bull. 65, No. 2, 456--465 (2022; Zbl 1495.42016) Full Text: DOI arXiv
Christensen, Ole; Hasannasab, Marzieh Frame properties of systems arising via iterated actions of operators. (English) Zbl 1428.42056 Appl. Comput. Harmon. Anal. 46, No. 3, 664-673 (2019). Reviewer: Zhong-Qi Xiang (Shangrao) MSC: 42C15 46B15 PDFBibTeX XMLCite \textit{O. Christensen} and \textit{M. Hasannasab}, Appl. Comput. Harmon. Anal. 46, No. 3, 664--673 (2019; Zbl 1428.42056) Full Text: DOI Link
Stoeva, Diana T.; Christensen, Ole On various R-duals and the duality principle. (English) Zbl 1338.42047 Integral Equations Oper. Theory 84, No. 4, 577-590 (2016). MSC: 42C15 PDFBibTeX XMLCite \textit{D. T. Stoeva} and \textit{O. Christensen}, Integral Equations Oper. Theory 84, No. 4, 577--590 (2016; Zbl 1338.42047) Full Text: DOI arXiv
Christensen, Ole An introduction to frames and Riesz bases. 2nd edition. (English) Zbl 1348.42033 Applied and Numerical Harmonic Analysis. Basel: Birkhäuser/Springer (ISBN 978-3-319-25611-5/hbk; 978-3-319-25613-9/ebook). xxv, 704 p. (2016). Reviewer: Richard A. Zalik (Auburn) MSC: 42C15 42-02 42C40 46B15 46C05 PDFBibTeX XMLCite \textit{O. Christensen}, An introduction to frames and Riesz bases. 2nd edition. Basel: Birkhäuser/Springer (2016; Zbl 1348.42033) Full Text: DOI
Stoeva, Diana T.; Christensen, Ole On R-duals and the duality principle in Gabor analysis. (English) Zbl 1312.42037 J. Fourier Anal. Appl. 21, No. 2, 383-400 (2015). MSC: 42C15 PDFBibTeX XMLCite \textit{D. T. Stoeva} and \textit{O. Christensen}, J. Fourier Anal. Appl. 21, No. 2, 383--400 (2015; Zbl 1312.42037) Full Text: DOI arXiv
Christensen, Ole Frames and bases. An introductory course. (English) Zbl 1152.42001 Applied and Numerical Harmonic Analysis. Basel: Birkhäuser (ISBN 978-0-8176-4677-6/hbk). xviii, 313 p. (2008). Reviewer: Richard A. Zalik (Auburn University) MSC: 42-02 42C15 42C40 PDFBibTeX XMLCite \textit{O. Christensen}, Frames and bases. An introductory course. Basel: Birkhäuser (2008; Zbl 1152.42001)
Christensen, Ole; Stoeva, Diana T. \(p\)-frames in separable Banach spaces. (English) Zbl 1012.42024 Adv. Comput. Math. 18, No. 2-4, 117-126 (2003). MSC: 42C40 46B15 PDFBibTeX XMLCite \textit{O. Christensen} and \textit{D. T. Stoeva}, Adv. Comput. Math. 18, No. 2--4, 117--126 (2003; Zbl 1012.42024) Full Text: DOI
Christensen, Ole An introduction to frames and Riesz bases. (English) Zbl 1017.42022 Applied and Numerical Harmonic Analysis. Boston, MA: Birkhäuser. xx, 440 p. (2003). Reviewer: Richard A.Zalik (Auburn University) MSC: 42C40 42-02 42C15 46B15 46C05 PDFBibTeX XMLCite \textit{O. Christensen}, An introduction to frames and Riesz bases. Boston, MA: Birkhäuser (2003; Zbl 1017.42022)
Christensen, Ole; Lindner, Alexander Frames containing a Riesz basis and approximation of the inverse frame operator. (English) Zbl 0990.42020 Haussmann, Werner (ed.) et al., Recent progress in multivariate approximation. Proceedings of the 4th international conference, Witten-Bommerholz, Germany, September 24-29, 2000. Basel: Birkhäuser. ISNM, Int. Ser. Numer. Math. 137, 89-100 (2001). Reviewer: Richard A.Zalik (Auburn University) MSC: 42C40 47A58 PDFBibTeX XMLCite \textit{O. Christensen} and \textit{A. Lindner}, ISNM, Int. Ser. Numer. Math. 137, 89--100 (2001; Zbl 0990.42020)
Casazza, Peter G.; Christensen, Ole; Kalton, Nigel J. Frames of translates. (English) Zbl 1029.42029 Collect. Math. 52, No. 1, 35-54 (2001). Reviewer: Radu Balan (Princeton) MSC: 42C40 42C15 PDFBibTeX XMLCite \textit{P. G. Casazza} et al., Collect. Math. 52, No. 1, 35--54 (2001; Zbl 1029.42029) Full Text: arXiv EuDML Link
Casazza, Peter G.; Christensen, Ole Frames containing a Riesz basis and preservation of this property under perturbations. (English) Zbl 0922.42024 SIAM J. Math. Anal. 29, No. 1, 266-278 (1998). Reviewer: Richard A.Zalik (Auburn University) MSC: 42C15 PDFBibTeX XMLCite \textit{P. G. Casazza} and \textit{O. Christensen}, SIAM J. Math. Anal. 29, No. 1, 266--278 (1998; Zbl 0922.42024) Full Text: DOI arXiv
Casazza, Peter G.; Christensen, Ole Hilbert space frames containing a Riesz basis and Banach spaces which have no subspace isomorphic to \(c_ 0\). (English) Zbl 0867.46013 J. Math. Anal. Appl. 202, No. 3, 940-950 (1996). Reviewer: S.S.Kutateladze (Novosibirsk) MSC: 46B25 46B15 PDFBibTeX XMLCite \textit{P. G. Casazza} and \textit{O. Christensen}, J. Math. Anal. Appl. 202, No. 3, 940--950 (1996; Zbl 0867.46013) Full Text: DOI arXiv
Christensen, Ole Frames containing a Riesz basis and approximation of the frame coefficients using finite-dimensional methods. (English) Zbl 0889.46011 J. Math. Anal. Appl. 199, No. 1, 256-270 (1996). Reviewer: Yuri A.Abramovich (Indianapolis) MSC: 46B15 PDFBibTeX XMLCite \textit{O. Christensen}, J. Math. Anal. Appl. 199, No. 1, 256--270 (1996; Zbl 0889.46011) Full Text: DOI