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At:
connex iff trichot12 1. T : Type
2. R : TTProp
3. a,b:T. Dec(R(a,b))
4. a,b:T. R(a,b) & R(b,a) R(a,b) & R(b,a) R(b,a) & R(a,b)
5. x : T 6. y : T R(x,y) R(y,x)
By:
(InstHyp [x;y] 4) THEN ProveProp
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html