Nuprl Lemma : q-linear-unroll

∀[k:ℕ+]. ∀[X:ℕ ⟶ ℚ]. ∀[y:ℚ List].
  q-linear(k;j.X[j];y) = (q-linear(k - 1;j.X[j];y) + (X[k] * y[k - 1])) ∈ ℚ supposing k ≤ ||y||


Proof




Definitions occuring in Statement :  q-linear: q-linear(k;i.X[i];y),  qmul: r * s,  qadd: r + s,  rationals: ℚ,  select: L[n],  length: ||as||,  list: T List,  nat_plus: ℕ+,  nat: ℕ,  uimplies: b supposing a,  uall: ∀[x:A]. B[x],  so_apply: x[s],  le: A ≤ B,  function: x:A ⟶ B[x],  subtract: n - m,  natural_number: $n,  equal: s = t ∈ T
Definitions unfolded in proof :  q-linear: q-linear(k;i.X[i];y),  uall: ∀[x:A]. B[x],  member: t ∈ T,  uimplies: b supposing a,  squash: ↓T,  prop: ℙ,  so_apply: x[s],  nat_plus: ℕ+,  all: ∀x:A. B[x],  decidable: Dec(P),  or: P ∨ Q,  satisfiable_int_formula: satisfiable_int_formula(fmla),  exists: ∃x:A. B[x],  top: Top,  false: False,  nat: ℕ,  le: A ≤ B,  and: P ∧ Q,  less_than': less_than'(a;b),  not: ¬A,  implies: P ⇒ Q,  so_lambda: λ2x.t[x],  int_seg: {i..j-},  guard: {T},  lelt: i ≤ j < k,  true: True,  subtype_rel: A ⊆r B,  iff: P ⇐⇒ Q,  rev_implies: P ⇐ Q
Lemmas referenced :  equal_wf,  squash_wf,  true_wf,  rationals_wf,  qadd_wf,  nat_wf,  nat_plus_properties,  decidable__equal_int,  satisfiable-full-omega-tt,  intformnot_wf,  intformeq_wf,  itermConstant_wf,  int_formula_prop_not_lemma,  int_formula_prop_eq_lemma,  int_term_value_constant_lemma,  int_formula_prop_wf,  false_wf,  le_wf,  sum_unroll_hi_q,  decidable__lt,  intformand_wf,  intformless_wf,  itermVar_wf,  int_formula_prop_and_lemma,  int_formula_prop_less_lemma,  int_term_value_var_lemma,  qmul_wf,  int_seg_properties,  decidable__le,  intformle_wf,  itermAdd_wf,  int_formula_prop_le_lemma,  int_term_value_add_lemma,  select_wf,  length_wf,  int_seg_wf,  qsum_wf,  subtract_wf,  itermSubtract_wf,  int_term_value_subtract_lemma,  nat_plus_subtype_nat,  iff_weakening_equal,  subtract-add-cancel,  qadd_assoc,  list_wf,  nat_plus_wf
Rules used in proof :  sqequalSubstitution,  sqequalRule,  sqequalReflexivity,  sqequalTransitivity,  computationStep,  isect_memberFormation,  introduction,  cut,  applyEquality,  thin,  lambdaEquality,  sqequalHypSubstitution,  imageElimination,  extract_by_obid,  isectElimination,  hypothesisEquality,  equalityTransitivity,  hypothesis,  equalitySymmetry,  universeEquality,  functionExtensionality,  setElimination,  rename,  dependent_functionElimination,  natural_numberEquality,  because_Cache,  unionElimination,  independent_isectElimination,  dependent_pairFormation,  intEquality,  isect_memberEquality,  voidElimination,  voidEquality,  computeAll,  dependent_set_memberEquality,  independent_pairFormation,  lambdaFormation,  int_eqEquality,  addEquality,  productElimination,  imageMemberEquality,  baseClosed,  independent_functionElimination,  axiomEquality,  functionEquality

Latex:
\mforall{}[k:\mBbbN{}\msupplus{}].  \mforall{}[X:\mBbbN{}  {}\mrightarrow{}  \mBbbQ{}].  \mforall{}[y:\mBbbQ{}  List].
    q-linear(k;j.X[j];y)  =  (q-linear(k  -  1;j.X[j];y)  +  (X[k]  *  y[k  -  1]))  supposing  k  \mleq{}  ||y||



Date html generated: 2018_05_22-AM-00_17_30
Last ObjectModification: 2017_07_26-PM-06_53_27

Theory : rationals


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