
Is ZF a hack?: Comparing the complexity of some (formalist interpretations of) foundational systems for mathematics
Keywords: Logical frameworks; Foundation of mathematics; Automath; Set theory; Higher order logic; Type theory; Category theory; Zermelo–Fraenkel; ZF; ZFC; New foundations; NF; HOL; Isabelle; Calculus of constructions; Martin-Löf type theory; Formalization of mathe