A Short Proof that Some Mappings of the Unit Ball of ℓ2 Are Never Nonexpansive

  1. Ferrer, J.
  2. Llorens-Fuster, E.
Journal:
American Mathematical Monthly

ISSN: 1930-0972,  0002-9890

Year of publication: 2020

Volume: 127

Issue: 4

Pages: 354-358

Type: Note

DOI: 10.1080/00029890.2020.1704168 GOOGLE SCHOLAR
Data source: Scopus