Robuta

https://eprints.illc.uva.nl/id/eprint/2272/ MoL-2023-22: Alternative Impredicative Encodings of Inductive Types - ILLC Preprints and... https://downloads.haskell.org/ghc/latest/docs/users_guide/exts/impredicative_types.html 6.4.21. Impredicative polymorphism — Glasgow Haskell Compiler 9.14.1 User's Guide https://msclogic.illc.uva.nl/theses/recent/publication/5493/Higher-Inductive-Types-Via-Impredicative-Encodings Higher Inductive Types Via Impredicative Encodings | Master of Logic higher inductive types via encodings