Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2024 MCQ for Transactions of the American Mathematical Society is 1.48 .

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Truncated smooth function spaces
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by Oscar Domínguez and Sergey Tikhonov;
Trans. Amer. Math. Soc. 377 (2024), 8877-8934
DOI: https://doi.org/10.1090/tran/9259
Published electronically: September 25, 2024

Abstract:

We introduce truncated Besov and Triebel–Lizorkin function spaces and study their main properties: embeddings, interpolation, duality, lifting, traces. These new scales allow us to improve several known results in functional analysis and PDE’s. In particular, we obtain a full solution to the trace/extension problem in the critical case as well as sharp Sobolev-type embeddings with critical smoothness parameters.
References
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Bibliographic Information
  • Oscar Domínguez
  • Affiliation: Departamento de Métodos Cuantitativos, CUNEF Universidad, 28040 Madrid, Spain
  • Email: oscar.dominguez@cunef.edu
  • Sergey Tikhonov
  • Affiliation: ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain; Centre de Recerca Matemàtica, Campus de Bellaterra, Edifici C 08193 Bellaterra (Barcelona); and Universitat Autònoma de Barcelona, Facultat de Ciències, 08193 Bellaterra (Barcelona), Spain
  • MR Author ID: 706641
  • ORCID: 0000-0001-5061-4308
  • Email: stikhonov@crm.cat
  • Received by editor(s): August 30, 2023
  • Received by editor(s) in revised form: June 3, 2024
  • Published electronically: September 25, 2024
  • Additional Notes: This research was partially supported by the AEI grant RYC2022-037402-I, the French National Research Agency (ANR-10-LABX-0070), (ANR-11-IDEX-0007) (O.D.) and by PID2020-114948GB-I00, 2017 SGR 358, AP 14870758, the CERCA Programme of the Generalitat de Catalunya, and Severo Ochoa and María de Maeztu Program for Centers and Units of Excellence in R$\&$D (CEX2020-001084-M) (S.T.).
  • © Copyright 2024 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 377 (2024), 8877-8934
  • MSC (2020): Primary 46E35, 42B35; Secondary 26A15, 46E30, 46B70, 65T60
  • DOI: https://doi.org/10.1090/tran/9259