Proof of Theorem spansncol
| Step | Hyp | Ref
| Expression |
| 1 | | ax-hvmulass 8872 |
. . . . . . . . . . . 12
⊢ ((y ∈ ℂ ⋀ B ∈ ℂ ⋀ A ∈ ℋ ) → ((y
· B)
·h A) =
(y ·h
(B ·h
A))) |
| 2 | 1 | 3com13 840 |
. . . . . . . . . . 11
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ y ∈ ℂ) → ((y
· B)
·h A) =
(y ·h
(B ·h
A))) |
| 3 | 2 | 3expa 835 |
. . . . . . . . . 10
⊢ (((A ∈ ℋ ⋀ B ∈ ℂ) ⋀ y ∈ ℂ) → ((y
· B)
·h A) =
(y ·h
(B ·h
A))) |
| 4 | 3 | eqeq2d 1489 |
. . . . . . . . 9
⊢ (((A ∈ ℋ ⋀ B ∈ ℂ) ⋀ y ∈ ℂ) → (x =
((y · B) ·h A) ↔ x =
(y ·h
(B ·h
A)))) |
| 5 | 4 | biimprd 154 |
. . . . . . . 8
⊢ (((A ∈ ℋ ⋀ B ∈ ℂ) ⋀ y ∈ ℂ) → (x =
(y ·h
(B ·h
A)) → x = ((y ·
B) ·h
A))) |
| 6 | | axmulcl 5285 |
. . . . . . . . . 10
⊢ ((y ∈ ℂ ⋀ B ∈ ℂ) → (y
· B) ∈ ℂ) |
| 7 | 6 | ancoms 438 |
. . . . . . . . 9
⊢ ((B ∈ ℂ ⋀ y ∈ ℂ) → (y
· B) ∈ ℂ) |
| 8 | 7 | adantll 394 |
. . . . . . . 8
⊢ (((A ∈ ℋ ⋀ B ∈ ℂ) ⋀ y ∈ ℂ) → (y
· B) ∈ ℂ) |
| 9 | 5, 8 | jctild 603 |
. . . . . . 7
⊢ (((A ∈ ℋ ⋀ B ∈ ℂ) ⋀ y ∈ ℂ) → (x =
(y ·h
(B ·h
A)) → ((y · B)
∈ ℂ ⋀ x =
((y · B) ·h A)))) |
| 10 | | opreq1 3974 |
. . . . . . . . 9
⊢ (z = (y ·
B) → (z ·h A) = ((y
· B)
·h A)) |
| 11 | 10 | eqeq2d 1489 |
. . . . . . . 8
⊢ (z = (y ·
B) → (x = (z
·h A)
↔ x = ((y · B)
·h A))) |
| 12 | 11 | rcla4ev 1880 |
. . . . . . 7
⊢ (((y · B)
∈ ℂ ⋀ x =
((y · B) ·h A)) → ∃z ∈ ℂ x = (z
·h A)) |
| 13 | 9, 12 | syl6 22 |
. . . . . 6
⊢ (((A ∈ ℋ ⋀ B ∈ ℂ) ⋀ y ∈ ℂ) → (x =
(y ·h
(B ·h
A)) → ∃z ∈ ℂ x = (z
·h A))) |
| 14 | 13 | r19.23adva 1750 |
. . . . 5
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ) → (∃y ∈ ℂ x = (y
·h (B
·h A))
→ ∃z ∈ ℂ x =
(z ·h
A))) |
| 15 | 14 | 3adant3 801 |
. . . 4
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (∃y ∈ ℂ x = (y
·h (B
·h A))
→ ∃z ∈ ℂ x =
(z ·h
A))) |
| 16 | | ax-hvmulass 8872 |
. . . . . . . . . . . . . 14
⊢ (((z / B) ∈ ℂ ⋀ B ∈ ℂ ⋀ A ∈ ℋ ) →
(((z / B) · B)
·h A) =
((z / B) ·h (B ·h A))) |
| 17 | | divclt 5724 |
. . . . . . . . . . . . . . . 16
⊢ ((z ∈ ℂ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (z / B) ∈ ℂ) |
| 18 | 17 | 3expb 836 |
. . . . . . . . . . . . . . 15
⊢ ((z ∈ ℂ ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → (z / B) ∈ ℂ) |
| 19 | 18 | adantlr 395 |
. . . . . . . . . . . . . 14
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → (z / B) ∈ ℂ) |
| 20 | | simprl 416 |
. . . . . . . . . . . . . 14
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → B ∈ ℂ) |
| 21 | | simplr 415 |
. . . . . . . . . . . . . 14
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → A ∈ ℋ ) |
| 22 | 16, 19, 20, 21 | syl3anc 860 |
. . . . . . . . . . . . 13
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → (((z / B) ·
B) ·h
A) = ((z / B)
·h (B
·h A))) |
| 23 | | divcan1t 5732 |
. . . . . . . . . . . . . . . . 17
⊢ ((z ∈ ℂ ⋀ B ∈ ℂ ⋀ B ≠ 0) → ((z / B) ·
B) = z) |
| 24 | 23 | 3exp 834 |
. . . . . . . . . . . . . . . 16
⊢ (z ∈ ℂ → (B
∈ ℂ →
(B ≠ 0 → ((z / B) ·
B) = z))) |
| 25 | 24 | imp32 363 |
. . . . . . . . . . . . . . 15
⊢ ((z ∈ ℂ ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → ((z / B) ·
B) = z) |
| 26 | 25 | adantlr 395 |
. . . . . . . . . . . . . 14
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → ((z / B) ·
B) = z) |
| 27 | 26 | opreq1d 3981 |
. . . . . . . . . . . . 13
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → (((z / B) ·
B) ·h
A) = (z
·h A)) |
| 28 | 22, 27 | eqtr3d 1512 |
. . . . . . . . . . . 12
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → ((z / B)
·h (B
·h A)) =
(z ·h
A)) |
| 29 | 28 | eqeq2d 1489 |
. . . . . . . . . . 11
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → (x = ((z /
B) ·h
(B ·h
A)) ↔ x = (z
·h A))) |
| 30 | 29 | biimprd 154 |
. . . . . . . . . 10
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → (x = (z
·h A)
→ x = ((z / B)
·h (B
·h A)))) |
| 31 | 30, 19 | jctild 603 |
. . . . . . . . 9
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → (x = (z
·h A)
→ ((z / B) ∈ ℂ ⋀ x = ((z /
B) ·h
(B ·h
A))))) |
| 32 | | opreq1 3974 |
. . . . . . . . . . 11
⊢ (y = (z /
B) → (y ·h (B ·h A)) = ((z /
B) ·h
(B ·h
A))) |
| 33 | 32 | eqeq2d 1489 |
. . . . . . . . . 10
⊢ (y = (z /
B) → (x = (y
·h (B
·h A))
↔ x = ((z / B)
·h (B
·h A)))) |
| 34 | 33 | rcla4ev 1880 |
. . . . . . . . 9
⊢ (((z / B) ∈ ℂ ⋀ x =
((z / B) ·h (B ·h A))) → ∃y ∈ ℂ x = (y
·h (B
·h A))) |
| 35 | 31, 34 | syl6 22 |
. . . . . . . 8
⊢ (((z ∈ ℂ ⋀ A ∈ ℋ ) ⋀ (B ∈ ℂ ⋀ B ≠ 0)) → (x = (z
·h A)
→ ∃y ∈ ℂ x =
(y ·h
(B ·h
A)))) |
| 36 | 35 | exp43 386 |
. . . . . . 7
⊢ (z ∈ ℂ → (A
∈ ℋ →
(B ∈
ℂ → (B ≠ 0 → (x = (z
·h A)
→ ∃y ∈ ℂ x =
(y ·h
(B ·h
A))))))) |
| 37 | 36 | com4l 39 |
. . . . . 6
⊢ (A ∈ ℋ → (B
∈ ℂ →
(B ≠ 0 → (z ∈ ℂ → (x =
(z ·h
A) → ∃y ∈ ℂ x = (y
·h (B
·h A))))))) |
| 38 | 37 | 3imp 829 |
. . . . 5
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (z ∈ ℂ → (x =
(z ·h
A) → ∃y ∈ ℂ x = (y
·h (B
·h A))))) |
| 39 | 38 | r19.23adv 1749 |
. . . 4
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (∃z ∈ ℂ x = (z
·h A)
→ ∃y ∈ ℂ x =
(y ·h
(B ·h
A)))) |
| 40 | 15, 39 | impbid 518 |
. . 3
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (∃y ∈ ℂ x = (y
·h (B
·h A))
↔ ∃z ∈ ℂ x =
(z ·h
A))) |
| 41 | | hvmulclt 8878 |
. . . . . 6
⊢ ((B ∈ ℂ ⋀ A ∈ ℋ ) → (B
·h A) ∈ ℋ ) |
| 42 | 41 | ancoms 438 |
. . . . 5
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ) → (B
·h A) ∈ ℋ ) |
| 43 | | elspansnt 9484 |
. . . . 5
⊢ ((B ·h A) ∈ ℋ → (x
∈ (span ‘{(B ·h A)}) ↔ ∃y ∈ ℂ x = (y
·h (B
·h A)))) |
| 44 | 42, 43 | syl 10 |
. . . 4
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ) → (x
∈ (span ‘{(B ·h A)}) ↔ ∃y ∈ ℂ x = (y
·h (B
·h A)))) |
| 45 | 44 | 3adant3 801 |
. . 3
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (x ∈ (span
‘{(B
·h A)})
↔ ∃y ∈ ℂ x =
(y ·h
(B ·h
A)))) |
| 46 | | elspansnt 9484 |
. . . 4
⊢ (A ∈ ℋ → (x
∈ (span ‘{A}) ↔ ∃z ∈ ℂ x = (z
·h A))) |
| 47 | 46 | 3ad2ant1 802 |
. . 3
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (x ∈ (span
‘{A}) ↔ ∃z ∈ ℂ x = (z
·h A))) |
| 48 | 40, 45, 47 | 3bitr4d 552 |
. 2
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (x ∈ (span
‘{(B
·h A)})
↔ x ∈ (span ‘{A}))) |
| 49 | 48 | eqrdv 1476 |
1
⊢ ((A ∈ ℋ ⋀ B ∈ ℂ ⋀ B ≠ 0) → (span ‘{(B ·h A)}) = (span ‘{A})) |