Step
*
of Lemma
Kripke2a
∀a:ℕ ⟶ ℕ. (is-absolutely-free{i:l}(a)
⇒ increasing-sequence(a)
⇒ (∀m:ℕ. (¬¬(∃n:ℕ. ((a n) ≥ m )))))
BY
{ ((UnivCD THENA Auto) THEN (D 0 THENA Auto)) }
1
1. a : ℕ ⟶ ℕ
2. is-absolutely-free{i:l}(a)
3. increasing-sequence(a)
4. m : ℕ
5. ¬(∃n:ℕ. ((a n) ≥ m ))
⊢ False
Latex:
Latex:
\mforall{}a:\mBbbN{} {}\mrightarrow{} \mBbbN{}
(is-absolutely-free\{i:l\}(a) {}\mRightarrow{} increasing-sequence(a) {}\mRightarrow{} (\mforall{}m:\mBbbN{}. (\mneg{}\mneg{}(\mexists{}n:\mBbbN{}. ((a n) \mgeq{} m )))))
By
Latex:
((UnivCD THENA Auto) THEN (D 0 THENA Auto))
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