Nuprl Lemma : rotate-inverse1

∀[n:ℕ+]. ((rot(n) o rot(n)^n - 1) = (λx.x) ∈ (ℕn ⟶ ℕn))


Proof




Definitions occuring in Statement :  rotate: rot(n),  fun_exp: f^n,  compose: f o g,  int_seg: {i..j-},  nat_plus: ℕ+,  uall: ∀[x:A]. B[x],  lambda: λx.A[x],  function: x:A ⟶ B[x],  subtract: n - m,  natural_number: $n,  equal: s = t ∈ T
Definitions unfolded in proof :  uall: ∀[x:A]. B[x],  compose: f o g,  member: t ∈ T,  top: Top,  nat: ℕ,  nat_plus: ℕ+,  guard: {T},  int_seg: {i..j-},  lelt: i ≤ j < k,  and: P ∧ Q,  all: ∀x:A. B[x],  decidable: Dec(P),  or: P ∨ Q,  uimplies: b supposing a,  satisfiable_int_formula: satisfiable_int_formula(fmla),  exists: ∃x:A. B[x],  false: False,  implies: P ⇒ Q,  not: ¬A,  prop: ℙ,  true: True,  squash: ↓T,  subtype_rel: A ⊆r B,  iff: P ⇐⇒ Q,  rev_implies: P ⇐ Q
Lemmas referenced :  fun_exp_add1,  subtract_wf,  int_seg_properties,  nat_plus_properties,  decidable__le,  satisfiable-full-omega-tt,  intformand_wf,  intformnot_wf,  intformle_wf,  itermConstant_wf,  itermSubtract_wf,  itermVar_wf,  intformless_wf,  int_formula_prop_and_lemma,  int_formula_prop_not_lemma,  int_formula_prop_le_lemma,  int_term_value_constant_lemma,  int_term_value_subtract_lemma,  int_term_value_var_lemma,  int_formula_prop_less_lemma,  int_formula_prop_wf,  le_wf,  subtract-add-cancel,  int_seg_wf,  nat_plus_wf,  equal_wf,  rotate-order,  iff_weakening_equal
Rules used in proof :  sqequalSubstitution,  sqequalTransitivity,  computationStep,  sqequalReflexivity,  isect_memberFormation,  cut,  functionExtensionality,  sqequalRule,  introduction,  extract_by_obid,  sqequalHypSubstitution,  isectElimination,  thin,  isect_memberEquality,  voidElimination,  voidEquality,  dependent_set_memberEquality,  setElimination,  rename,  hypothesisEquality,  hypothesis,  natural_numberEquality,  because_Cache,  productElimination,  dependent_functionElimination,  unionElimination,  independent_isectElimination,  dependent_pairFormation,  lambdaEquality,  int_eqEquality,  intEquality,  independent_pairFormation,  computeAll,  applyEquality,  imageElimination,  imageMemberEquality,  baseClosed,  equalityTransitivity,  equalitySymmetry,  independent_functionElimination

Latex:
\mforall{}[n:\mBbbN{}\msupplus{}].  ((rot(n)  o  rot(n)\^{}n  -  1)  =  (\mlambda{}x.x))



Date html generated: 2017_04_17-AM-08_08_49
Last ObjectModification: 2017_02_27-PM-04_36_20

Theory : list_1


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