Countable Infinite Version of Dilworth's Theorem by Fabián Fernando Serran Suárez, Thaynara Arielly de Lima and Mauricio Ayala-Rincón Jul 20
Axiomatic theory of hereditarily finite sets and its fragments by Štěpán Holub and Zuzana Haniková Jul 03
The Mostowski Collapse Theorem by Arthur Freitas Ramos, David Barros Hulak and Ruy Jose Guerra Barretto de Queiroz May 11
The Independence of the Continuum Hypothesis in Isabelle/ZF by Emmanuel Gunther, Miguel Pagano, Pedro Sánchez Terraf and Matías Steinberg Mar 06
Transitive Models of Fragments of ZFC by Emmanuel Gunther, Miguel Pagano, Pedro Sánchez Terraf and Matías Steinberg Mar 03
Category Theory for ZFC in HOL I: Foundations: Design Patterns, Set Theory, Digraphs, Semicategories by Mihails Milehins Sep 06
Formalization of Forcing in Isabelle/ZF by Emmanuel Gunther, Miguel Pagano and Pedro Sánchez Terraf May 06