Nuprl - Proof: prop to bool 2 char 1 1

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At: prop to bool 2 char 1 1

1. P : Prop

InjCase(lem_2(P) ; true

; false

)

By:	Assert (v:P+(PVoid). InjCase(v ; true; false) P)

Generated subgoals:

1   v:P+(PVoid). InjCase(v ; true; false)  P
2 steps

2 2. v:P+(PVoid). InjCase(v ; true; false)  P
  InjCase(lem_2(P) ; true; false)  P
1 step

About:

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

1	v:P+(PVoid). InjCase(v ; true; false) P	2 steps
2	2. v:P+(PVoid). InjCase(v ; true; false) P InjCase(lem_2(P) ; true; false) P	1 step