Step
*
1
3
of Lemma
integral-by-parts
.....wf.....
1. I : Interval
2. u : {h:I ⟶ℝ| ∀x,y:{t:ℝ| t ∈ I} . ((x = y)
⇒ ((h x) = (h y)))}
3. v : {h:I ⟶ℝ| ∀x,y:{t:ℝ| t ∈ I} . ((x = y)
⇒ ((h x) = (h y)))}
4. ∀h:I ⟶ℝ. ∀u',v':{h:I ⟶ℝ| ∀x,y:{t:ℝ| t ∈ I} . ((x = y)
⇒ ((h x) = (h y)))} .
(d(u[t])/dt = λt.u'[t] on I
⇒ d(v[t])/dt = λt.v'[t] on I
⇒ d(h[t])/dt = λt.u'[t] * v[t] on I
⇒ d((u[t] * v[t]) - h[t])/dt = λt.u[t] * v'[t] on I)
5. u' : {h:I ⟶ℝ| ∀x,y:{t:ℝ| t ∈ I} . ((x = y)
⇒ ((h x) = (h y)))}
6. v' : {h:I ⟶ℝ| ∀x,y:{t:ℝ| t ∈ I} . ((x = y)
⇒ ((h x) = (h y)))}
7. d(u[t])/dt = λt.u'[t] on I
8. d(v[t])/dt = λt.v'[t] on I
9. iproper(I)
10. a : {a:ℝ| a ∈ I}
11. b : {a:ℝ| a ∈ I}
12. x : {x:ℝ| x ∈ I}
13. [rmin(a;x), rmax(a;x)] ⊆ I
14. f : [rmin(a;x), rmax(a;x)] ⟶ℝ
⊢ ifun(f;[rmin(a;x), rmax(a;x)]) ∈ Type
BY
{ Auto }
Latex:
Latex:
.....wf.....
1. I : Interval
2. u : \{h:I {}\mrightarrow{}\mBbbR{}| \mforall{}x,y:\{t:\mBbbR{}| t \mmember{} I\} . ((x = y) {}\mRightarrow{} ((h x) = (h y)))\}
3. v : \{h:I {}\mrightarrow{}\mBbbR{}| \mforall{}x,y:\{t:\mBbbR{}| t \mmember{} I\} . ((x = y) {}\mRightarrow{} ((h x) = (h y)))\}
4. \mforall{}h:I {}\mrightarrow{}\mBbbR{}. \mforall{}u',v':\{h:I {}\mrightarrow{}\mBbbR{}| \mforall{}x,y:\{t:\mBbbR{}| t \mmember{} I\} . ((x = y) {}\mRightarrow{} ((h x) = (h y)))\} .
(d(u[t])/dt = \mlambda{}t.u'[t] on I
{}\mRightarrow{} d(v[t])/dt = \mlambda{}t.v'[t] on I
{}\mRightarrow{} d(h[t])/dt = \mlambda{}t.u'[t] * v[t] on I
{}\mRightarrow{} d((u[t] * v[t]) - h[t])/dt = \mlambda{}t.u[t] * v'[t] on I)
5. u' : \{h:I {}\mrightarrow{}\mBbbR{}| \mforall{}x,y:\{t:\mBbbR{}| t \mmember{} I\} . ((x = y) {}\mRightarrow{} ((h x) = (h y)))\}
6. v' : \{h:I {}\mrightarrow{}\mBbbR{}| \mforall{}x,y:\{t:\mBbbR{}| t \mmember{} I\} . ((x = y) {}\mRightarrow{} ((h x) = (h y)))\}
7. d(u[t])/dt = \mlambda{}t.u'[t] on I
8. d(v[t])/dt = \mlambda{}t.v'[t] on I
9. iproper(I)
10. a : \{a:\mBbbR{}| a \mmember{} I\}
11. b : \{a:\mBbbR{}| a \mmember{} I\}
12. x : \{x:\mBbbR{}| x \mmember{} I\}
13. [rmin(a;x), rmax(a;x)] \msubseteq{} I
14. f : [rmin(a;x), rmax(a;x)] {}\mrightarrow{}\mBbbR{}
\mvdash{} ifun(f;[rmin(a;x), rmax(a;x)]) \mmember{} Type
By
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