My research interests are in mathematical analysis, mainly in functional analysis and specifically in operator algebras.
My PhD advisor was Professor N. Christopher Phillips.
My research is on operator algebras on `L^p` spaces which "look like `C^{**}`-algebras". Roughly speaking, this consists of developing an analogous theory for such `L^p`-operator algebras that closely relates to the known theory for `C^{**}`-algebras. The interesting part lies in the fact that there is no concept of adjoint operator in a `L^p` -operator algebra and, therefore, the usual tools used to prove results in a `C^{**}`-algebra setting are not always available. This is a relatively new field of study, so not much is known about it. Some of the tools one needs when working on `L^p`-operator algebras are from the classic theory of `C^{**}`-algebras such as `K`-theory, representation theory and crossed products. However, methods from operator spaces and classical Banach space theory are also helpful here.
I am also interested in abstract harmonic analysis. In particular interaction between wavelets and `C^{**}`-algebras and the spectral synthesis problem for the `L^p` group operator algebra of the integers. The toolbox here inculdes topological groups, commutative Banach algebras, `K`-theory, Hilbert `C^{**}`-modules, and frames and bases.
A. Calin, I. Cartwright, L. Coffman, A. Delfín, C. Girard, J. Goldrick, A. Nerella, W. Wu “`C^{**}`-like modules and `p`-operator norms”, (REU-2024)
(in preparation)
A. Delfín, C. Farsi, J.Packer, "`L^{p}`-spectral triples and `p`-quantum compact metric spaces", Submited (2024)
(available at arXiv:2411.13735 [math.FA]).
A. Delfín, "`L^{p}`-modules, `L^{p}`-correspondences, and their `L^{p}`-operator algebras", Submited (2024)
(available at arXiv:2410.10789 [math.FA]).
A. Blinov, A. Delfín, E. Weld, "Multiplier Algebras of `L^{p}`-operator algebras", To appear in the Pacific Journal of Mathematics. (2024+)
(available at arXiv:2403.16309 [math.FA]).
A. Delfín, "Representations of `C^{**}`-correspondences on pairs of Hilbert spaces", Journal of Operator Theory. Vol. 92 (2024), no.1, 167-188.
(available at arXiv:2208.14605 [math.OA]).