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some restyling ...
[helm.git] / matita / matita / contribs / lambdadelta / static_2 / etc / sh_lt.etc
1 definition sh_N: sh ≝ mk_sh S ….
2 // defined.
3
4 axiom nexts_dec: ∀h,s1,s2. Decidable (∃n. (next h)^n s1 = s2).
5
6 axiom nexts_inj: ∀h,s,n1,n2. (next h)^n1 s = (next h)^n2 s → n1 = n2.
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