Proof of Theorem choc1
| Step | Hyp | Ref
| Expression |
| 1 | | helch 5151 |
. . . . . . . 8
⊢ ℋ ∈
Cℋ |
| 2 | 1 | chshi 5132 |
. . . . . . 7
⊢ ℋ ∈
Sℋ |
| 3 | | shocelt 5163 |
. . . . . . 7
⊢ ( ℋ ∈
Sℋ → (x ∈
(⊥ ‘ ℋ ) ↔ (x ∈
ℋ ∧ ∀y ∈ ℋ
(x ·i
y) = 0))) |
| 4 | 2, 3 | ax-mp 6 |
. . . . . 6
⊢ (x
∈ (⊥ ‘ ℋ ) ↔ (x
∈ ℋ ∧ ∀y ∈
ℋ (x
·i y) =
0)) |
| 5 | 4 | pm3.27bd 263 |
. . . . 5
⊢ (x
∈ (⊥ ‘ ℋ ) → ∀y ∈ ℋ (x ·i y) = 0) |
| 6 | | shocss 5167 |
. . . . . . . 8
⊢ ( ℋ ∈
Sℋ → (⊥ ‘ ℋ ) ⊆ ℋ
) |
| 7 | 2, 6 | ax-mp 6 |
. . . . . . 7
⊢ (⊥ ‘ ℋ ) ⊆
ℋ |
| 8 | 7 | sseli 1504 |
. . . . . 6
⊢ (x
∈ (⊥ ‘ ℋ ) → x
∈ ℋ ) |
| 9 | | hial0 5058 |
. . . . . 6
⊢ (x
∈ ℋ → (∀y ∈
ℋ (x
·i y) = 0
↔ x = 0v)) |
| 10 | 8, 9 | syl 12 |
. . . . 5
⊢ (x
∈ (⊥ ‘ ℋ ) → (∀y ∈ ℋ (x ·i y) = 0 ↔ x
= 0v)) |
| 11 | 5, 10 | mpbid 170 |
. . . 4
⊢ (x
∈ (⊥ ‘ ℋ ) → x
= 0v) |
| 12 | | elch0 5158 |
. . . 4
⊢ (x
∈ |