Proof of Theorem hlim0
| Step | Hyp | Ref
| Expression |
| 1 | | ax-hvzercl 4987 |
. . . . . . 7
⊢ 0v ∈
ℋ |
| 2 | 1 | elisseti 1355 |
. . . . . 6
⊢ 0v ∈
V |
| 3 | 2 | fconst 2774 |
. . . . 5
⊢ (ℕ ×
{0v}):ℕ–→{0v} |
| 4 | | snssi 1851 |
. . . . . 6
⊢ (0v ∈ ℋ
→ {0v} ⊆ ℋ ) |
| 5 | 1, 4 | ax-mp 6 |
. . . . 5
⊢ {0v} ⊆
ℋ |
| 6 | | fss 2759 |
. . . . 5
⊢ (((ℕ ×
{0v}):ℕ–→{0v} ∧
{0v} ⊆ ℋ ) → (ℕ ×
{0v}):ℕ–→ ℋ ) |
| 7 | 3, 5, 6 | mp2an 520 |
. . . 4
⊢ (ℕ ×
{0v}):ℕ–→ ℋ |
| 8 | 7, 1 | pm3.2i 234 |
. . 3
⊢ ((ℕ ×
{0v}):ℕ–→ ℋ ∧ 0v
∈ ℋ ) |
| 9 | | fvconst 2899 |
. . . . . . . . . . . . . . . . 17
⊢ (((ℕ ×
{0v}):ℕ–→{0v} ∧
z ∈ ℕ) → ((ℕ ×
{0v}) ‘z) =
0v) |
| 10 | 3, 9 | mpan 518 |
. . . . . . . . . . . . . . . 16
⊢ (z
∈ ℕ → ((ℕ × {0v}) ‘z) = 0v) |
| 11 | 10 | opreq1d 3012 |
. . . . . . . . . . . . . . 15
⊢ (z
∈ ℕ → (((ℕ × {0v})
‘z) −v
0v) = (0v −v
0v)) |
| 12 | | hvsubidt 5005 |
. . . . . . . . . . . . . . . 16
⊢ (0v ∈ ℋ
→ (0v −v 0v) =
0v) |
| 13 | 1, 12 | ax-mp 6 |
. . . . . . . . . . . . . . 15
⊢ (0v
−v 0v) =
0v |
| 14 | 11, 13 | syl6eq 1140 |
. . . . . . . . . . . . . 14
⊢ (z
∈ ℕ → (((ℕ × {0v})
‘z) −v
0v) = 0v) |
| 15 | 14 | fveq2d 2836 |
. . . . . . . . . . . . 13
⊢ (z
∈ ℕ → (norm ‘(((ℕ × {0v})
‘z) −v
0v)) = (norm ‘0v)) |
| 16 | | norm0 5079 |
. . . . . . . . . . . . 13
⊢ (norm ‘0v) =
0 |
| 17 | 15, 16 | syl6eq 1140 |
. . . . . . . . . . . 12
⊢ (z
∈ ℕ → (norm ‘(((ℕ × {0v})
‘z) −v
0v)) = 0) |
| 18 | 17 | breq1d 2071 |
. . . . . . . . . . 11
⊢ (z
∈ ℕ → ((norm ‘(((ℕ × {0v})
‘z) −v
0v)) < x ↔ 0 <
x)) |
| 19 | 18 | biimprd 136 |
. . . . . . . . . 10
⊢ (z
∈ ℕ → (0 < x →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x)) |
| 20 | 19 | a1d 14 |
. . . . . . . . 9
⊢ (z
∈ ℕ → (1 ≤ z → (0
< x → (norm ‘(((ℕ
× {0v}) ‘z)
−v 0v)) < x))) |
| 21 | 20 | com3r 35 |
. . . . . . . 8
⊢ (0 < x → (z
∈ ℕ → (1 ≤ z →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x))) |
| 22 | 21 | r19.21aiv 1259 |
. . . . . . 7
⊢ (0 < x → ∀z ∈ ℕ (1 ≤ z → (norm ‘(((ℕ ×
{0v}) ‘z)
−v 0v)) < x)) |
| 23 | | 1nn 4432 |
. . . . . . 7
⊢ 1 ∈ ℕ |
| 24 | 22, 23 | jctil 240 |
. . . . . 6
⊢ (0 < x → (1 ∈ ℕ ∧ ∀z ∈ ℕ (1 ≤ z → (norm ‘(((ℕ ×
{0v}) ‘z)
−v 0v)) < x))) |
| 25 | | breq1 2065 |
. . . . . . . . 9
⊢ (y = 1
→ (y ≤ z ↔ 1 ≤ z)) |
| 26 | 25 | imbi1d 465 |
. . . . . . . 8
⊢ (y = 1
→ ((y ≤ z → (norm ‘(((ℕ ×
{0v}) ‘z)
−v 0v)) < x) ↔ (1 ≤ z → (norm ‘(((ℕ ×
{0v}) ‘z)
−v 0v)) < x))) |
| 27 | 26 | biraldv 1219 |
. . . . . . 7
⊢ (y = 1
→ (∀z ∈ ℕ (y ≤ z →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x) ↔ ∀z ∈ ℕ (1 ≤ z → (norm ‘(((ℕ ×
{0v}) ‘z)
−v 0v)) < x))) |
| 28 | 27 | rcla4ev 1403 |
. . . . . 6
⊢ ((1 ∈ ℕ ∧ ∀z ∈ ℕ (1 ≤ z → (norm ‘(((ℕ ×
{0v}) ‘z)
−v 0v)) < x)) → ∃y ∈ ℕ ∀z ∈ ℕ (y ≤ z →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x)) |
| 29 | 24, 28 | syl 12 |
. . . . 5
⊢ (0 < x → ∃y ∈ ℕ ∀z ∈ ℕ (y ≤ z →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x)) |
| 30 | 29 | a1i 7 |
. . . 4
⊢ (x
∈ ℝ → (0 < x →
∃y ∈ ℕ ∀z ∈ ℕ (y ≤ z →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x))) |
| 31 | 30 | rgen 1247 |
. . 3
⊢ ∀x ∈ ℝ (0 < x → ∃y ∈ ℕ ∀z ∈ ℕ (y ≤ z →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x)) |
| 32 | 8, 31 | pm3.2i 234 |
. 2
⊢ (((ℕ ×
{0v}):ℕ–→ ℋ ∧ 0v
∈ ℋ ) ∧ ∀x ∈
ℝ (0 < x → ∃y ∈ ℕ ∀z ∈ ℕ (y ≤ z →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x))) |
| 33 | | nnex 4431 |
. . . 4
⊢ ℕ ∈ V |
| 34 | | snex 1859 |
. . . 4
⊢ {0v} ∈
V |
| 35 | 33, 34 | xpex 2488 |
. . 3
⊢ (ℕ × {0v})
∈ V |
| 36 | 35, 2 | hlim 5108 |
. 2
⊢ ((ℕ × {0v})
⇝v 0v ↔ (((ℕ ×
{0v}):ℕ–→ ℋ ∧ 0v
∈ ℋ ) ∧ ∀x ∈
ℝ (0 < x → ∃y ∈ ℕ ∀z ∈ ℕ (y ≤ z →
(norm ‘(((ℕ × {0v}) ‘z) −v 0v))
< x)))) |
| 37 | 32, 36 | mpbir 165 |
1
⊢ (ℕ × {0v})
⇝v 0v |