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15 include "labelled_hap_computation.ma".
17 (* KASHIMA'S "ST" COMPUTATION ***********************************************)
19 (* Note: this is the "standard" computation of:
20 R. Kashima: "A proof of the Standization Theorem in λ-Calculus". Typescript note, (2000).
22 inductive st: relation term ≝
23 | st_vref: ∀s,M,i. lhap s M (#i) → st M (#i)
24 | st_abst: ∀s,M,A,C. lhap s M (𝛌.A) → st A C → st M (𝛌.C)
25 | st_appl: ∀s,M,B,D,A,C. lhap s M (@B.A) → st B D → st A C → st M (@D.C)