Media type: E-Article Title: On a ‘philosophical’ question about Banach envelopes Contributor: Albiac, Fernando; Ansorena, José L.; Wojtaszczyk, Przemysław imprint: Springer Science and Business Media LLC, 2021 Published in: Revista Matemática Complutense Language: English DOI: 10.1007/s13163-020-00374-8 ISSN: 1139-1138; 1988-2807 Keywords: General Mathematics Origination: Footnote: