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15 set "baseuri" "cic:/matita/RELATIONAL-ARITHMETICS/BEq".
17 include "logic/equality.ma".
21 inductive BEq (b1:Bool): Bool \to Bool \to Prop \def
22 | BEq_false: \forall b2. BNot b1 b2 \to BEq b1 false b2
23 | BEq_true : BEq b1 true b1.