DEFINITION pc3_wcpr0__pc3_wcpr0_t_aux()
TYPE =
       ∀c1:C.∀c2:C.(wcpr0 c1 c2)→∀k:K.∀u:T.∀t1:T.∀t2:T.(pr3 (CHead c1 k u) t1 t2)→(pc3 (CHead c2 k u) t1 t2)
BODY =
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