IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
card nsub inj vs lopped1131211 1. a :
2. b :
3. (f.<f(a-1),f>) (a inj b)(i:b(a-1) inj {x:b| x = i })
4. (ie.ie/i,e. x.if x=a-1 i else e(x) fi)
4. (i:b(a-1) inj {x:b| x = i })a inj b 5. f : ab 6. Inj(a; b; f)
7. a1 : a 8. a2 : a 9. f(a-1) = f(a2)
10. a1 = a-1
11. a2a-1
a1 = a2
By:
FwdThru: Inj(a; b; f) on [ Hyp:-3 ]
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html