English

Shift invariant subspaces of slice $L^2$ functions

Complex Variables 2018-06-13 v3

Abstract

In this paper we characterize the closed invariant subspaces for the (*-)multiplier operator of the quaternionic space of slice L2L^2 functions. As a consequence, we obtain the inner-outer factorization theorem for the quaternionic Hardy space on the unit ball and we provide a characterization of quaternionic outer functions in terms of cyclicity.

Keywords

Cite

@article{arxiv.1802.02344,
  title  = {Shift invariant subspaces of slice $L^2$ functions},
  author = {Alessandro Monguzzi and Giulia Sarfatti},
  journal= {arXiv preprint arXiv:1802.02344},
  year   = {2018}
}

Comments

19 pages. Typos fixed and minor changes

R2 v1 2026-06-23T00:14:14.001Z