The resolvent equations for the Harmonic and bi-Harmonic functional calculi in dimension five

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Autori principali: Colombo, Fabrizio, De Martino, Antonino, Da Costa, Joao Marques
Natura: Preprint
Pubblicazione: 2026
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author Colombo, Fabrizio
De Martino, Antonino
Da Costa, Joao Marques
author_facet Colombo, Fabrizio
De Martino, Antonino
Da Costa, Joao Marques
contents The fine structures on the $S$-spectrum constitute a new research area that includes a class of functional calculi based on the $S$-spectrum and on integral transforms determined by the Fueter--Sce mapping theorem and the Cauchy formula for slice hyperholomorphic functions. This strategy, based on integral transforms, allows us to construct functional calculi that include harmonic and polyharmonic functional calculi. The resolvent operators in this setting do not arise directly from a Cauchy kernel, but rather from suitable manipulations of it. For this reason the corresponding resolvent equations differ substantially from those associated with the classical Cauchy kernel. In this paper, we investigate the harmonic and biharmonic resolvent equations in dimension five, as well as the corresponding product rules and Riesz projectors for these functional calculi.
format Preprint
id arxiv_https___arxiv_org_abs_2603_15349
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle The resolvent equations for the Harmonic and bi-Harmonic functional calculi in dimension five
Colombo, Fabrizio
De Martino, Antonino
Da Costa, Joao Marques
Functional Analysis
The fine structures on the $S$-spectrum constitute a new research area that includes a class of functional calculi based on the $S$-spectrum and on integral transforms determined by the Fueter--Sce mapping theorem and the Cauchy formula for slice hyperholomorphic functions. This strategy, based on integral transforms, allows us to construct functional calculi that include harmonic and polyharmonic functional calculi. The resolvent operators in this setting do not arise directly from a Cauchy kernel, but rather from suitable manipulations of it. For this reason the corresponding resolvent equations differ substantially from those associated with the classical Cauchy kernel. In this paper, we investigate the harmonic and biharmonic resolvent equations in dimension five, as well as the corresponding product rules and Riesz projectors for these functional calculi.
title The resolvent equations for the Harmonic and bi-Harmonic functional calculi in dimension five
topic Functional Analysis
url https://arxiv.org/abs/2603.15349