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15 set "baseuri" "cic:/matita/LOGIC/Insert/defs".
17 (* INSERT RELATION FOR CONTEXTS
20 include "datatypes/Context.ma".
22 inductive Insert (S:Sequent): Nat \to Context \to Context \to Prop \def
23 | insert_zero: \forall P. Insert S zero P (abst P S)
24 | insert_succ: \forall P,Q,R,i.
25 Insert S i P Q \to Insert S (succ i) (abst P R) (abst Q R)