Published online by Cambridge University Press: 12 March 2014
For the reader's convenience, we begin Part II by restating the rules for constructing Sq derivations given in §2:
We let R be the set of 14 rules for Sq, R* the set of pure *-rules in R, R≃ the set of pure ≃-rules in R, and R− the set R ∩ − {Exs≃}. The closure of any F ⊆ Sq under R will be denoted by csR F, and the direct image of F under Cut*, for example, by Cut*(F).
Part I, which consisted of §§ 1 – 3 and the bibliography, appeared in the previous issue of this Journal, pp. 795–827.
1 Part I, which consisted of §§ 1 – 3 and the bibliography, appeared in the previous issue of this Journal, pp. 795–827.