Nuprl - Proof: es-loc-rcv 2 2 1 1

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At: es-loc-rcv 2 2 1 1

1. es : ES
2. e : E
3. l : IdLnk
4. tg : Id
5. kind(e) = rcv(l; tg)
6. isrcv(e)
7.

loc(sender(e)) = source(l)
8. sends(l;sender(e)) = nil
9. index(e)

||sends(l;sender(e))||

loc(sender(e)) = source(l)

By:	Subst (\|\|sends(l;sender(e))\|\| ~ 0) -1

Generated subgoal:

1 ||sends(l;sender(e))|| = 0
1 step

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