src/HOL/Tools/atp-inputs/u_helper1.tptp
changeset 20806 3728dba101f1
parent 20805 35574b9b59aa
child 20807 bd3b60f9a343
equal deleted inserted replaced
20805:35574b9b59aa 20806:3728dba101f1
     1 %ID: $Id$
       
     2 %Author: Jia Meng, NICTA
       
     3 %functional equality and extensionality, untyped
       
     4 
       
     5 input_clause(a9,axiom,
       
     6 [--hBOOL(hAPP(hAPP(fequal,X),Y)),++equal(X,Y)]).
       
     7 
       
     8 input_clause(a10,axiom,
       
     9 [++hBOOL(hAPP(hAPP(fequal,X),Y)),--equal(X,Y)]).
       
    10 
       
    11 input_clause(a11,axiom,
       
    12 [--equal(hAPP(F,hAPP(hAPP(hEXTENT,F),G)),hAPP(G,hAPP(hAPP(hEXTENT,F),G))),
       
    13 ++equal(F,G)]).
       
    14