Nuprl Lemma : integral-rsub

[a,b:ℝ]. ∀[f,g:{f:[rmin(a;b), rmax(a;b)] ⟶ℝifun(f;[rmin(a;b), rmax(a;b)])} ].
  (a_∫-f[x] g[x] dx (a_∫-f[x] dx a_∫-g[x] dx))


Proof




Definitions occuring in Statement :  integral: a_∫-f[x] dx ifun: ifun(f;I) rfun: I ⟶ℝ rccint: [l, u] rmin: rmin(x;y) rmax: rmax(x;y) rsub: y req: y real: uall: [x:A]. B[x] so_apply: x[s] set: {x:A| B[x]} 
Definitions unfolded in proof :  uall: [x:A]. B[x] member: t ∈ T so_lambda: λ2x.t[x] rfun: I ⟶ℝ so_apply: x[s] prop: ifun: ifun(f;I) all: x:A. B[x] top: Top real-fun: real-fun(f;a;b) implies:  Q uimplies: supposing a uiff: uiff(P;Q) and: P ∧ Q rev_uimplies: rev_uimplies(P;Q) iff: ⇐⇒ Q itermConstant: "const" req_int_terms: t1 ≡ t2 false: False not: ¬A squash: T label: ...$L... t subtype_rel: A ⊆B guard: {T} rev_implies:  Q
Lemmas referenced :  integral_functionality rsub_wf i-member_wf rccint_wf rmin_wf rmax_wf real_wf left_endpoint_rccint_lemma right_endpoint_rccint_lemma req_functionality rsub_functionality req_weakening req_wf set_wf ifun_wf rccint-icompact rmin-rleq-rmax radd_wf rmul_wf int-to-real_wf radd_functionality rmul_functionality real_term_polynomial itermSubtract_wf itermVar_wf itermAdd_wf itermMultiply_wf itermConstant_wf member_rccint_lemma rleq_wf real_term_value_const_lemma real_term_value_sub_lemma real_term_value_var_lemma real_term_value_add_lemma real_term_value_mul_lemma req-iff-rsub-is-0 req_witness integral_wf squash_wf icompact_wf rfun_wf interval_wf eta_conv iff_weakening_equal req_transitivity integral-radd integral-rmul-const
Rules used in proof :  sqequalSubstitution sqequalTransitivity computationStep sqequalReflexivity isect_memberFormation introduction cut extract_by_obid sqequalHypSubstitution isectElimination thin hypothesisEquality sqequalRule setElimination rename dependent_set_memberEquality lambdaEquality applyEquality hypothesis because_Cache setEquality dependent_functionElimination isect_memberEquality voidElimination voidEquality lambdaFormation independent_functionElimination independent_isectElimination productElimination minusEquality natural_numberEquality computeAll int_eqEquality independent_pairFormation productEquality intEquality equalityTransitivity equalitySymmetry imageElimination imageMemberEquality baseClosed universeEquality

Latex:
\mforall{}[a,b:\mBbbR{}].  \mforall{}[f,g:\{f:[rmin(a;b),  rmax(a;b)]  {}\mrightarrow{}\mBbbR{}|  ifun(f;[rmin(a;b),  rmax(a;b)])\}  ].
    (a\_\mint{}\msupminus{}b  f[x]  -  g[x]  dx  =  (a\_\mint{}\msupminus{}b  f[x]  dx  -  a\_\mint{}\msupminus{}b  g[x]  dx))



Date html generated: 2017_10_04-PM-10_15_54
Last ObjectModification: 2017_07_28-AM-08_47_50

Theory : reals_2


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