Nuprl - Proof: and via all intseg notnull 1

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At: and via all intseg notnull 1

1. a :

2. b :

3. P : {a..b

}

Prop
4. a<b
5. c :

6. b = c+1

(

i:{a..b

}. P(i))

(

i:{a..c

}. P(i)) & P(c)

By:

Auto

Generated subgoals:

1 7. i:{a..b}. P(i)
8. i : {a..c}
  P(i)
1 step

2 7. i:{a..b}. P(i)
  P(c)
1 step

3 7. i:{a..c}. P(i)
8. P(c)
9. i : {a..b}
  P(i)
3 steps

About:

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