caa a22 4500 606224017 CHVBK 20210128101141.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s00407-015-0151-2 doi (NATIONALLICENCE)springer-10.1007/s00407-015-0151-2 Ciccoli N. Dipartimento di Matematica e Informatica, Università di Perugia, Via Vanvitelli 1, 06123, Perugia, Italy aut Fantappiè's "final relativity” and deformations of Lie algebras [Elektronische Daten] [N. Ciccoli] The rigidity of the real semisimple Lie algebra $${\mathfrak {so}}(4,1)$$ so ( 4 , 1 ) was first proved in a brief paper published by Fantappiè in 1954 (Rend. Accad. Lincei Ser. VIII 17:158-165, 1954). The purpose of this note is to provide some historical context for this work and discuss why no further developments of this result were pursued by Italian mathematicians at the time. Springer-Verlag Berlin Heidelberg, 2015 Archive for History of Exact Sciences Springer Berlin Heidelberg 69/3(2015-05-01), 311-326 0003-9519 69:3<311 2015 69 407 https://doi.org/10.1007/s00407-015-0151-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00407-015-0151-2 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ciccoli N. Dipartimento di Matematica e Informatica, Università di Perugia, Via Vanvitelli 1, 06123, Perugia, Italy aut NATIONALLICENCE 773 0- Archive for History of Exact Sciences Springer Berlin Heidelberg 69/3(2015-05-01), 311-326 0003-9519 69:3<311 2015 69 407