Step
*
of Lemma
firstn-before
∀[the_es:EO]. ∀[e:E]. ∀[n:ℕ]. firstn(n;before(e)) ~ before(before(e)[n]) supposing n < ||before(e)||
BY
{ (UniformUnivCD Auto THEN Repeat (MoveToConcl (-1))) }
1
∀the_es:EO. ∀e:E. ∀n:ℕ. (n < ||before(e)||
⇒ (firstn(n;before(e)) ~ before(before(e)[n])))
Latex:
\mforall{}[the$_{es}$:EO]. \mforall{}[e:E]. \mforall{}[n:\mBbbN{}]. firstn(n;before(e)) \msim{} before(before(e)[n]) su\000Cpposing n < ||before(e)||
By
(UniformUnivCD Auto THEN Repeat (MoveToConcl (-1)))
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