Nuprl Lemma : ma-ring-diff-circle

[R:Id List]. [s:{i:Id| (i  R)}   {i:Id| (i  R)} ]. [x:Id].
  (ma-ring(R;s)  (x  R)  (y:{i:Id| (i  R)} . (((x = y))  ((y = (s^||remove-repeats(IdDeq;R)|| x))))))


Proof not projected




Definitions occuring in Statement :  ma-ring: ma-ring(R;s) id-deq: IdDeq Id: Id length: ||as|| uall: [x:A]. B[x] all: x:A. B[x] not: A implies: P  Q set: {x:A| B[x]}  apply: f a function: x:A  B[x] list: type List equal: s = t l_member: (x  l) fun_exp: f^n remove-repeats: remove-repeats(eq;L)
Lemmas :  squash_wf true_wf ma-ring-diff sq_stable_from_decidable decidable__l_member decidable__equal_Id set_subtype_base atom2_subtype_base fun_exp_add-sq int_subtype_base subtype_base_sq int_seg_properties ma-ring-all-in-remove-repeats-steps2 subtype_rel_list strong-subtype_wf strong-subtype-deq-subtype non_neg_length length_wf le_wf nat_wf intensional-universe_wf subtype_rel_wf ma-ring_wf not_wf false_wf fun_exp_wf l_member_wf length_wf_nat remove-repeats_wf assert_wf iff_wf id-deq_wf Id_wf deq_wf member_wf bool_wf top_wf

\mforall{}[R:Id  List].  \mforall{}[s:\{i:Id|  (i  \mmember{}  R)\}    {}\mrightarrow{}  \{i:Id|  (i  \mmember{}  R)\}  ].  \mforall{}[x:Id].
    (ma-ring(R;s)
    {}\mRightarrow{}  (x  \mmember{}  R)
    {}\mRightarrow{}  (\mforall{}y:\{i:Id|  (i  \mmember{}  R)\}  .  ((\mneg{}(x  =  y))  {}\mRightarrow{}  (\mneg{}(y  =  (s\^{}||remove-repeats(IdDeq;R)||  x))))))


Date html generated: 2012_02_20-PM-05_58_15
Last ObjectModification: 2012_02_02-PM-02_30_13

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