Step
*
2
1
1
1
1
2
1
of Lemma
bag-intersection
.....assertion.....
1. n : ℕ
2. m : ℕ
3. p : ℕ
4. q : ℕ
5. f : ℕp + q ⟶ ℕn + m
6. Inj(ℕp + q;ℕn + m;f)
7. (p + q) = (n + m) ∈ ℤ
8. m < n
9. q < p
10. ∀i:ℕp. (n ≤ f[i])
11. Inj(ℕp;{n..n + m-};f)
⊢ p ≤ m
BY
{ (BLemma `injection_le` THEN Auto) }
1
1. n : ℕ
2. m : ℕ
3. p : ℕ
4. q : ℕ
5. f : ℕp + q ⟶ ℕn + m
6. Inj(ℕp + q;ℕn + m;f)
7. (p + q) = (n + m) ∈ ℤ
8. m < n
9. q < p
10. ∀i:ℕp. (n ≤ f[i])
11. Inj(ℕp;{n..n + m-};f)
⊢ ∃f:ℕp ⟶ ℕm. Inj(ℕp;ℕm;f)
Latex:
Latex:
.....assertion.....
1. n : \mBbbN{}
2. m : \mBbbN{}
3. p : \mBbbN{}
4. q : \mBbbN{}
5. f : \mBbbN{}p + q {}\mrightarrow{} \mBbbN{}n + m
6. Inj(\mBbbN{}p + q;\mBbbN{}n + m;f)
7. (p + q) = (n + m)
8. m < n
9. q < p
10. \mforall{}i:\mBbbN{}p. (n \mleq{} f[i])
11. Inj(\mBbbN{}p;\{n..n + m\msupminus{}\};f)
\mvdash{} p \mleq{} m
By
Latex:
(BLemma `injection\_le` THEN Auto)
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