Step
*
of Lemma
not-assert-bdd-all
∀n:ℕ. ∀P:ℕn ⟶ 𝔹. (¬↑bdd-all(n;i.P[i])
⇐⇒ ∃i:ℕn. (¬↑P[i]))
BY
{ (RWO "assert-bdd-all" 0 THEN Auto) }
1
1. n : ℕ
2. P : ℕn ⟶ 𝔹
3. ¬(∀i:ℕn. (↑P[i]))
⊢ ∃i:ℕn. (¬↑P[i])
2
1. n : ℕ
2. P : ℕn ⟶ 𝔹
3. ∃i:ℕn. (¬↑P[i])
⊢ ¬(∀i:ℕn. (↑P[i]))
Latex:
Latex:
\mforall{}n:\mBbbN{}. \mforall{}P:\mBbbN{}n {}\mrightarrow{} \mBbbB{}. (\mneg{}\muparrow{}bdd-all(n;i.P[i]) \mLeftarrow{}{}\mRightarrow{} \mexists{}i:\mBbbN{}n. (\mneg{}\muparrow{}P[i]))
By
Latex:
(RWO "assert-bdd-all" 0 THEN Auto)
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