Nuprl Lemma : assert-in-missing-iff

i:ℤ. ∀missing:{l:ℤ List| l-ordered(ℤ;x,y.x < y;l)} .  (↑in-missing(i;missing) ⇐⇒ (i ∈ missing))


Proof




Definitions occuring in Statement :  in-missing: in-missing(i;missing) l_member: (x ∈ l) list: List assert: b less_than: a < b all: x:A. B[x] iff: ⇐⇒ Q set: {x:A| B[x]}  int: l-ordered: l-ordered(T;x,y.R[x; y];L)
Lemmas :  assert-in-missing assert_wf in-missing_wf sq_stable__assert list_induction l_member_wf false_wf true_wf l-ordered-nil-true less_than_wf nil_member nil_wf l-ordered_wf reduce_cons_lemma iff_transitivity le_int_wf bool_wf eqtt_to_assert assert_of_le_int bor_wf eq_int_wf le_wf or_wf equal-wf-base int_subtype_base iff_weakening_uiff assert_of_band assert_of_bor assert_of_eq_int le_weakening decidable__equal_int not-equal-2 le_antisymmetry_iff add_functionality_wrt_le add-associates add-commutes le-add-cancel add-swap le_weakening2 all_wf l-ordered-cons cons_member cons_wf set_wf list_wf
\mforall{}i:\mBbbZ{}.  \mforall{}missing:\{l:\mBbbZ{}  List|  l-ordered(\mBbbZ{};x,y.x  <  y;l)\}  .    (\muparrow{}in-missing(i;missing)  \mLeftarrow{}{}\mRightarrow{}  (i  \mmember{}  missing))



Date html generated: 2015_07_17-AM-08_21_19
Last ObjectModification: 2015_04_02-PM-05_43_03

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