1. The Matita Interactive Theorem Prover
2. Kshitij Bansal , Sarah Loos , Markus Rabe , Christian Szegedy , and Stewart Wilcox . 2019 . HOList: an environment for machine learning of higher order logic theorem proving . In ICML 2019. 454–463. https://proceedings.mlr.press/v97/bansal19a.html Kshitij Bansal, Sarah Loos, Markus Rabe, Christian Szegedy, and Stewart Wilcox. 2019. HOList: an environment for machine learning of higher order logic theorem proving. In ICML 2019. 454–463. https://proceedings.mlr.press/v97/bansal19a.html
3. The lean mathematical library
4. Judy Crow , Sam Owre , John Rushby , Natarajan Shankar , and Mandayam Srivas . 1995 . A Tutorial Introduction to PVS . In Workshop on Industrial-Strength Formal Specification Techniques 1995. http://www.csl.sri.com/papers/wift-tutorial/ Judy Crow, Sam Owre, John Rushby, Natarajan Shankar, and Mandayam Srivas. 1995. A Tutorial Introduction to PVS. In Workshop on Industrial-Strength Formal Specification Techniques 1995. http://www.csl.sri.com/papers/wift-tutorial/