Nuprl Lemma : rv-Cauchy-Schwarz

∀[rv:InnerProductSpace]. ∀[a,b:Point].  (a ⋅ b^2 ≤ (a^2 * b^2))


Proof




Definitions occuring in Statement :  rv-ip: x ⋅ y,  inner-product-space: InnerProductSpace,  ss-point: Point,  rleq: x ≤ y,  rnexp: x^k1,  rmul: a * b,  uall: ∀[x:A]. B[x],  natural_number: $n
Definitions unfolded in proof :  ss-eq: x ≡ y,  rev_uimplies: rev_uimplies(P;Q),  rsub: x - y,  uiff: uiff(P;Q),  rneq: x ≠ y,  or: P ∨ Q,  guard: {T},  subtype_rel: A ⊆r B,  all: ∀x:A. B[x],  rnonneg: rnonneg(x),  rleq: x ≤ y,  uimplies: b supposing a,  stable: Stable{P},  prop: ℙ,  implies: P ⇒ Q,  not: ¬A,  false: False,  less_than': less_than'(a;b),  and: P ∧ Q,  le: A ≤ B,  nat: ℕ,  member: t ∈ T,  uall: ∀[x:A]. B[x]
Lemmas referenced :  rmul-int,  rv-ip0,  ss-eq_weakening,  rv-ip_functionality,  rleq_weakening_equal,  rnexp2,  radd-rminus-assoc,  radd-int,  rmul-identity1,  rminus-as-rmul,  rmul-distrib2,  radd-zero-both,  radd-preserves-rleq,  radd_comm,  radd-ac,  radd-assoc,  rmul-ac,  rminus_functionality,  rmul-assoc,  req_inversion,  rmul-zero-both,  rmul_over_rminus,  rmul-distrib,  rmul-rdiv-cancel2,  uiff_transitivity,  rminus_wf,  rmul_preserves_rleq2,  rsub_functionality,  rv-ip-mul2,  rmul_functionality,  rv-ip-mul,  req_transitivity,  radd_functionality,  rv-ip-sub-squared,  req_weakening,  rleq_functionality,  radd_wf,  int-to-real_wf,  rless_wf,  rdiv_wf,  rv-mul_wf,  rv-sub_wf,  rv-ip-nonneg,  rv-ip-positive,  minimal-not-not-excluded-middle,  minimal-double-negation-hyp-elim,  rleq_wf,  not_wf,  rv-0_wf,  ss-sep_wf,  or_wf,  separation-space_wf,  real-vector-space_wf,  inner-product-space_wf,  subtype_rel_transitivity,  inner-product-space_subtype,  real-vector-space_subtype1,  ss-point_wf,  nat_plus_wf,  rsub_wf,  less_than'_wf,  rmul_wf,  rv-ip_wf,  le_wf,  false_wf,  rnexp_wf,  stable__rleq
Rules used in proof :  multiplyEquality,  addEquality,  inrFormation,  unionElimination,  independent_functionElimination,  functionEquality,  voidElimination,  isect_memberEquality,  instantiate,  equalitySymmetry,  equalityTransitivity,  axiomEquality,  minusEquality,  applyEquality,  because_Cache,  independent_pairEquality,  productElimination,  dependent_functionElimination,  lambdaEquality,  independent_isectElimination,  hypothesisEquality,  hypothesis,  lambdaFormation,  independent_pairFormation,  sqequalRule,  natural_numberEquality,  dependent_set_memberEquality,  thin,  isectElimination,  sqequalHypSubstitution,  extract_by_obid,  cut,  introduction,  isect_memberFormation,  sqequalReflexivity,  computationStep,  sqequalTransitivity,  sqequalSubstitution

Latex:
\mforall{}[rv:InnerProductSpace].  \mforall{}[a,b:Point].    (a  \mcdot{}  b\^{}2  \mleq{}  (a\^{}2  *  b\^{}2))



Date html generated: 2016_11_08-AM-09_17_18
Last ObjectModification: 2016_10_31-PM-03_43_11

Theory : inner!product!spaces


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