Publisher Correction to: Bollettino dell’ Unione Matematica Italiana https://doi.org/10.1007/s40574-023-00352-0

In the original version of this article initially published online, two authors were mistakenly added to the author list. E. Ballico and A. Bernardi contributed to the Appendix only and were not contributors to the article itself. P. Santarsiero (University of Osnabrück-MPI MiS, Leipzig, Germany) is the sole author of this article. These amendments have been made to the HTML and PDF versions of the article.

Original article corrected.