Nuprl - Pf div_2_to_1 1 1 1 1 1 1

1. a: {...0}
2. b:
3. a-b((-a) b)
4. -b+-b((-a) b) < a
5. ab(a b)
6. -b+b(a b) < a

(a b) = -((-a) b)

By: FwdThru Thm* i,j,k:. i < j jk i < k [6;3] THEN FwdThru Thm* i,j,k:. i < j jk i < k [4;5] THEN OnHyps [6;5;4;3] Thin

Generated subgoal:

1 3. -b+b(a b) < -b((-a) b)
4. -b+-b((-a) b) < b(a b)
(a b) = -((-a) b)

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