Nuprl Lemma : integral-rsub
∀[a,b:ℝ]. ∀[f,g:{f:[rmin(a;b), rmax(a;b)] ⟶ℝ| ifun(f;[rmin(a;b), rmax(a;b)])} ].
  (a_∫-b f[x] - g[x] dx = (a_∫-b f[x] dx - a_∫-b g[x] dx))
Proof
Definitions occuring in Statement : 
integral: a_∫-b f[x] dx
, 
ifun: ifun(f;I)
, 
rfun: I ⟶ℝ
, 
rccint: [l, u]
, 
rmin: rmin(x;y)
, 
rmax: rmax(x;y)
, 
rsub: x - y
, 
req: x = y
, 
real: ℝ
, 
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: ℙ
, 
ifun: ifun(f;I)
, 
all: ∀x:A. B[x]
, 
top: Top
, 
real-fun: real-fun(f;a;b)
, 
implies: P 
⇒ Q
, 
uimplies: b supposing a
, 
uiff: uiff(P;Q)
, 
and: P ∧ Q
, 
rev_uimplies: rev_uimplies(P;Q)
, 
iff: P 
⇐⇒ Q
, 
itermConstant: "const"
, 
req_int_terms: t1 ≡ t2
, 
false: False
, 
not: ¬A
, 
squash: ↓T
, 
label: ...$L... t
, 
subtype_rel: A ⊆r B
, 
guard: {T}
, 
rev_implies: P 
⇐ 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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