Abstract
In this paper we introduce a function for multilinear operators that can be considered as an extension of the so-called outer measure associated to a linear operator ideal. We prove that it allows to characterize the operators that belong to a closed surjective ideal of multilinear operators as those having measure equal to zero. We also obtain some interpolation formulas for this new measure. As a consequence we deduce interpolation results for arbitrary closed surjective ideals of multilinear operators which recover, in particular, different results previously established in the literature.
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Acknowledgements
The authors would like to thank the referees for their useful comments which have led to improve the paper. A. Manzano was supported in part by the Ministerio de Economía, Industria y Competitividad and FEDER under project MTM2017-84058-P. P. Rueda and E. A. Sánchez-Pérez were supported in part by the Ministerio de Economía, Industria y Competitividad and FEDER under project MTM2016-77054-C2-1-P.
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Communicated by Mieczyslaw Mastylo.
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Manzano, A., Rueda, P. & Sánchez-Pérez, E.A. Closed surjective ideals of multilinear operators and interpolation. Banach J. Math. Anal. 15, 27 (2021). https://doi.org/10.1007/s43037-020-00115-5
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DOI: https://doi.org/10.1007/s43037-020-00115-5
Keywords
- Ideal of multilinear operators
- Closed ideal
- Surjective ideal
- Measure associated to an ideal
- Interpolation