Topological properties of convolutor spaces via the short-time Fourier transform
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- by Andreas Debrouwere and Jasson Vindas PDF
- Trans. Amer. Math. Soc. 374 (2021), 829-861 Request permission
Abstract:
We discuss the structural and topological properties of a general class of weighted $L^1$ convolutor spaces. Our theory simultaneously applies to weighted $\mathcal {D}’_{L^1}$ spaces as well as to convolutor spaces of the Gelfand-Shilov spaces $\mathcal {K}\{M_p\}$. In particular, we characterize the sequences of weight functions $(M_p)_{p \in \mathbb {N}}$ for which the space of convolutors of $\mathcal {K}\{M_p\}$ is ultrabornological, thereby generalizing Grothendieck’s classical result for the space $\mathcal {O}’_{C}$ of rapidly decreasing distributions. Our methods lead to the first direct proof of the completeness of the space $\mathcal {O}_{C}$ of very slowly increasing smooth functions.References
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Additional Information
- Andreas Debrouwere
- Affiliation: Department of Mathematics: Analysis, Logic and Discrete Mathematics, Ghent University, Krijgslaan 281, 9000 Gent, Belgium
- MR Author ID: 1154620
- Email: andreas.debrouwere@ugent.be
- Jasson Vindas
- Affiliation: Department of Mathematics: Analysis, Logic and Discrete Mathematics, Ghent University, Krijgslaan 281, 9000 Gent, Belgium
- MR Author ID: 795097
- ORCID: 0000-0002-3789-8577
- Email: jasson.vindas@ugent.be
- Received by editor(s): September 21, 2018
- Received by editor(s) in revised form: June 8, 2019, and November 21, 2019
- Published electronically: November 18, 2020
- Additional Notes: The first author was supported by FWO-Vlaanderen through the postdoctoral grant 12T0519N
The second author was supported by Ghent University through the BOF-grants 01J11615 and 01J04017. - © Copyright 2020 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 374 (2021), 829-861
- MSC (2010): Primary 46A13, 46E10, 46F05; Secondary 46M18, 81S30
- DOI: https://doi.org/10.1090/tran/8080
- MathSciNet review: 4196379