Step
*
1
1
2
of Lemma
functions-equal-on-dense
1. I : Interval
2. X : {a:ℝ| a ∈ I} ⟶ ℙ
3. dense-in-interval(I;X)
4. u : {a:ℝ| a ∈ I}
5. v : {a:ℝ| a ∈ I}
6. u ≠ v
7. f : I ⟶ℝ
8. g : I ⟶ℝ
9. ∀x,y:{x:ℝ| x ∈ I} . ((x = y)
⇒ (f(x) = f(y)))
10. ∀x,y:{x:ℝ| x ∈ I} . ((x = y)
⇒ (g(x) = g(y)))
11. ∀x:{x:ℝ| x ∈ I} . ((X x)
⇒ (f(x) = g(x)))
12. a : {x:ℝ| x ∈ I}
13. x : ℕ ⟶ {a:ℝ| a ∈ I}
14. ∀n:ℕ. (X (x n))
15. lim n→∞.x n = a
⊢ lim n→∞.g (x n) = g a
BY
{ (((InstLemma `function-limit` [⌜I⌝;⌜g⌝;⌜a⌝;⌜x⌝]⋅ THENM (RepUR ``r-ap so_apply`` -1 THEN Trivial)) THENA Auto)
THEN GenConclTerm ⌜x[n]⌝⋅
THEN Auto) }
Latex:
Latex:
1. I : Interval
2. X : \{a:\mBbbR{}| a \mmember{} I\} {}\mrightarrow{} \mBbbP{}
3. dense-in-interval(I;X)
4. u : \{a:\mBbbR{}| a \mmember{} I\}
5. v : \{a:\mBbbR{}| a \mmember{} I\}
6. u \mneq{} v
7. f : I {}\mrightarrow{}\mBbbR{}
8. g : I {}\mrightarrow{}\mBbbR{}
9. \mforall{}x,y:\{x:\mBbbR{}| x \mmember{} I\} . ((x = y) {}\mRightarrow{} (f(x) = f(y)))
10. \mforall{}x,y:\{x:\mBbbR{}| x \mmember{} I\} . ((x = y) {}\mRightarrow{} (g(x) = g(y)))
11. \mforall{}x:\{x:\mBbbR{}| x \mmember{} I\} . ((X x) {}\mRightarrow{} (f(x) = g(x)))
12. a : \{x:\mBbbR{}| x \mmember{} I\}
13. x : \mBbbN{} {}\mrightarrow{} \{a:\mBbbR{}| a \mmember{} I\}
14. \mforall{}n:\mBbbN{}. (X (x n))
15. lim n\mrightarrow{}\minfty{}.x n = a
\mvdash{} lim n\mrightarrow{}\minfty{}.g (x n) = g a
By
Latex:
(((InstLemma `function-limit` [\mkleeneopen{}I\mkleeneclose{};\mkleeneopen{}g\mkleeneclose{};\mkleeneopen{}a\mkleeneclose{};\mkleeneopen{}x\mkleeneclose{}]\mcdot{} THENM (RepUR ``r-ap so\_apply`` -1 THEN Trivial))
THENA Auto
)
THEN GenConclTerm \mkleeneopen{}x[n]\mkleeneclose{}\mcdot{}
THEN Auto)
Home
Index