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15 include "hap_reduction.ma".
17 (* KASHIMA'S "HAP" COMPUTATION **********************************************)
19 (* Note: this is the "head in application" computation of:
20 R. Kashima: "A proof of the Standization Theorem in λ-Calculus". Typescript note, (2000).
22 definition hap: relation term ≝ star … hap1.