Step
*
2
of Lemma
Vesley-connected-rationals
1. VesleyAxiom
⊢ dense-in-interval((-∞, ∞);λx.(¬¬(∃a:ℤ. ∃b:ℤ-o. (x = (r(a)/r(b))))))
BY
{ ((D 0 THEN Auto)
THEN (InstLemma `rationals-dense` [⌜a⌝;⌜b⌝]⋅ THENA Auto)
THEN ExRepD
THEN D 0 With ⌜(r(m)/r(n))⌝
THEN Auto) }
1
1. VesleyAxiom
2. a : {a:ℝ| a ∈ (-∞, ∞)}
3. b : {r:ℝ| r ∈ (-∞, ∞)}
4. a < b
5. n : ℕ+
6. m : ℤ
7. a < (r(m)/r(n))
8. (r(m)/r(n)) < b
9. a < (r(m)/r(n))
10. (r(m)/r(n)) < b
⊢ (λx.(¬¬(∃a:ℤ. ∃b:ℤ-o. (x = (r(a)/r(b)))))) (r(m)/r(n))
Latex:
Latex:
1. VesleyAxiom
\mvdash{} dense-in-interval((-\minfty{}, \minfty{});\mlambda{}x.(\mneg{}\mneg{}(\mexists{}a:\mBbbZ{}. \mexists{}b:\mBbbZ{}\msupminus{}\msupzero{}. (x = (r(a)/r(b))))))
By
Latex:
((D 0 THEN Auto)
THEN (InstLemma `rationals-dense` [\mkleeneopen{}a\mkleeneclose{};\mkleeneopen{}b\mkleeneclose{}]\mcdot{} THENA Auto)
THEN ExRepD
THEN D 0 With \mkleeneopen{}(r(m)/r(n))\mkleeneclose{}
THEN Auto)
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