Found 26 Documents (Results 1–26)
A note on factorization of vector valued functions involving the extraction of elementary factors. (English) Zbl 07874833
A general Simonenko local principle and Fredholm condition for isotypical components. (English) Zbl 07517408
Reviewer: Iakovos Androulidakis (Athína)
Compact sequences in quasifractal algebras. (English) Zbl 1494.47126
Bastos, M. Amélia (ed.) et al., Operator theory, functional analysis and applications. Proceedings of the 30th international workshop on operator theory and its applications, IWOTA 2019, Lisbon, Portugal, July 22–26, 2019. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 282, 529-550 (2021).
On the infinite-dimensional QR algorithm. (English) Zbl 1530.65055
Reviewer: K. C. Sivakumar (Chennai)
More than 40 years of algebraic techniques in numerical analysis. (English) Zbl 07137818
André, Carlos (ed.) et al., Operator theory, operator algebras, and matrix theory. Based on the presentations at the international workshop on operator theory and operator algebras, WOAT 2016, Lisbon, Portugal, July 5–8, 2016. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 267, 317-358 (2018).
Extension-restriction theorems for algebras of approximation sequences. (English) Zbl 1448.46057
André, Carlos (ed.) et al., Operator theory, operator algebras, and matrix theory. Based on the presentations at the international workshop on operator theory and operator algebras, WOAT 2016, Lisbon, Portugal, July 5–8, 2016. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 267, 261-284 (2018).
The (\(n,\epsilon\))-pseudospectrum of an element of a Banach algebra. (English) Zbl 1458.46035
Reviewer: Andrzej Sołtysiak (Poznań)
MSC:
46H05
On semi-Fredholm band-dominated operators. (English) Zbl 1343.47017
Reviewer: Carlos R. Carpintero (Cumaná)
Følner sequences in operator theory and operator algebras. (English) Zbl 1318.43001
Bastos, M. Amélia (ed.) et al., Operator theory, operator algebras and applications. Selected papers based on the presentations at the workshop WOAT 2012, Lisbon, Portugal, September 11–14, 2012. Basel: Birkhäuser/Springer (ISBN 978-3-0348-0815-6/hbk; 978-3-0348-0816-3/ebook). Operator Theory: Advances and Applications 242, 1-24 (2014).
Families of homomorphisms in non-commutative Gelfand theory: comparisons and examples. (English) Zbl 1262.46030
Arendt, Wolfgang (ed.) et al., Spectral theory, mathematical system theory, evolution equations, differential and difference equations. Selected papers of 21st international workshop on operator theory and applications, IWOTA10, Berlin, Germany, July 12–16, 2010. Basel: Birkhäuser (ISBN 978-3-0348-0296-3/hbk; 978-3-0348-0297-0/ebook). Operator Theory: Advances and Applications 221, 131-159 (2012).
Reviewer: Mart Abel (Tartu)
Logarithmic residues, Rouché’s theorem, and spectral regularity: The \(C^{\ast}\)-algebra case. (English) Zbl 1279.47028
Reviewer: Monika Winklmeier (Bogotá)
Spectral regularity of Banach algebras and non-commutative Gelfand theory. (English) Zbl 1268.30040
Dym, Harry (ed.) et al., A panorama of modern operator theory and related topics. The Israel Gohberg memorial volume. Basel: Birkhäuser (ISBN 978-3-0348-0220-8/hbk; 978-3-0348-0221-5/ebook). Operator Theory: Advances and Applications 218, 123-153 (2012).
Reviewer: Hu Yong-Jian (Beijing)
Linear maps preserving pseudospectrum and condition spectrum. (English) Zbl 1258.47055
Reviewer: Ying-Fen Lin (Shoufeng)
Two points, one limit: homogenization techniques for two-point local algebras. (English) Zbl 1259.47088
Reviewer: Lizhong Peng (Beijing)
Limit operators, collective compactness, and the spectral theory of infinite matrices. (English) Zbl 1219.47001
Mem. Am. Math. Soc. 989, vii, 111 p. (2011).
Reviewer: Alexei Yu. Karlovich (Lisboa)
On the solvability complexity index, the \(n\)-pseudospectrum and approximations of spectra of operators. (English) Zbl 1210.47013
Reviewer: Rudolf Kodnár (Bratislava)
The finite sections approach to the index formula for band-dominated operators. (English) Zbl 1166.47017
Ando, Tsuyoshi (ed.) et al., Recent advances in operator theory and applications. Proceedings of the international workshop on operator theory and applications (IWOTA), Seoul, Korea, July 31–August 3, 2006. Basel: Birkhäuser (ISBN 978-3-7643-8892-8/hbk). Operator Theory: Advances and Applications 187, 185-193 (2009).
Reviewer: Cătălin Badea (Villeneuve d’Ascq)
AF embeddings and the numerical computation of spectra in irrational rotation algebras. (English) Zbl 1105.65060
Reviewer: Teresa Regińska (Warszawa)
Condition numbers of large matrices, and analytic capacities. (English) Zbl 1098.15002
St. Petersbg. Math. J. 17, No. 4, 641-682 (2006) and Algebra Anal. 17, No. 4, 125-180 (2005).
Reviewer: Václav Burjan (Praha)
Symmetry and inverse-closedness of matrix algebras and functional calculus for infinite matrices. (English) Zbl 1105.46032
Reviewer: Richard M. Timoney (Dublin)
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