1948 13 185 F* is the associated quantifier-free formula of F.
1963 O. Wojtasiewicz tr. J. Łukasiewicz 95 Detachment..is the same as in the quantifier-free sentential calculus.
2004 10 376 The system has axioms ϕ, Γ where ϕ is a true quantifier-free formula.