Mass limits of the extremely fast-spinning white dwarf CTCV J2056–3014 Edson Otoniel, Jaziel G. Coelho, Sílvia P. Nunes, Manuel Malheiro and Fridolin Weber A&A, 656 (2021) A77 Published online: 03 December 2021 DOI: 10.1051/0004-6361/202039749