Step
*
of Lemma
truncate-strat2play
∀[g:SimpleGame]. ∀[n:ℕ]. ∀[s:win2strat(g;n)]. ∀[moves:strat2play(g;n;s)]. ∀[j:ℕ].
play-truncate(moves;2 * (j + 1)) ∈ strat2play(g;j;s) supposing j < n
BY
{ (Intros THEN Unhide THEN InstLemma `play-truncate_wf` [⌜g⌝;⌜j⌝;⌜s⌝;⌜moves⌝;⌜2 * (j + 1)⌝]⋅ THEN Auto) }
1
.....wf.....
1. g : SimpleGame
2. n : ℕ
3. s : win2strat(g;n)
4. moves : strat2play(g;n;s)
5. j : ℕ
6. j < n
⊢ 2 * (j + 1) ∈ {(2 * j) + 2..||moves|| + 1-}
Latex:
Latex:
\mforall{}[g:SimpleGame]. \mforall{}[n:\mBbbN{}]. \mforall{}[s:win2strat(g;n)]. \mforall{}[moves:strat2play(g;n;s)]. \mforall{}[j:\mBbbN{}].
play-truncate(moves;2 * (j + 1)) \mmember{} strat2play(g;j;s) supposing j < n
By
Latex:
(Intros
THEN Unhide
THEN InstLemma `play-truncate\_wf` [\mkleeneopen{}g\mkleeneclose{};\mkleeneopen{}j\mkleeneclose{};\mkleeneopen{}s\mkleeneclose{};\mkleeneopen{}moves\mkleeneclose{};\mkleeneopen{}2 * (j + 1)\mkleeneclose{}]\mcdot{}
THEN Auto)
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