Nuprl - Proof: es-first-exists 1 2 1

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: es-first-exists 1 2 1

1. es : ES
2. WellFnd{i}(E;x,y.(x <loc y))
3. j : E
4.

k:E. (k <loc j)

(

e:E. first(e) & e

k )
5.

first(j)

(pred(j) <loc j)

By:	BackThru Thm* the_es:ES, j:E. first(j) (pred(j) <loc j)

Generated subgoals:

None

About:

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