Proof of Theorem pjthu2
| Step | Hyp | Ref
| Expression |
| 1 | | pjthu2.1 |
. . . . 5
⊢ H
∈ Cℋ |
| 2 | | pjtht 5240 |
. . . . 5
⊢ ((H
∈ Cℋ ∧ A
∈ ℋ ) → ∃x ∈
H ∃y ∈ (⊥ ‘H)A = (x +v y)) |
| 3 | 1, 2 | mpan 518 |
. . . 4
⊢ (A
∈ ℋ → ∃x ∈
H ∃y ∈ (⊥ ‘H)A = (x +v y)) |
| 4 | | rexcom 1313 |
. . . 4
⊢ (∃y ∈ (⊥ ‘H)∃x
∈ H A = (x
+v y) ↔
∃x ∈ H ∃y
∈ (⊥ ‘H)A = (x
+v y)) |
| 5 | 3, 4 | sylibr 175 |
. . 3
⊢ (A
∈ ℋ → ∃y ∈
(⊥ ‘H)∃x ∈ H
A = (x
+v y)) |
| 6 | 1 | chocuni 5179 |
. . . . . . . . . . . . . 14
⊢ (((x
∈ H ∧ y ∈ (⊥ ‘H)) ∧ (z
∈ H ∧ w ∈ (⊥ ‘H))) → ((A
= (x +v y) ∧ A =
(z +v w)) → (x =
z ∧ y = w))) |
| 7 | 6 | an4s 390 |
. . . . . . . . . . . . 13
⊢ (((x
∈ H ∧ z ∈ H)
∧ (y ∈ (⊥ ‘H) ∧ w
∈ (⊥ ‘H))) →
((A = (x +v y) ∧ A =
(z +v w)) → (x =
z ∧ y = w))) |
| 8 | | pm3.27 260 |
. . . . . . . . . . . . 13
⊢ ((x =
z ∧ y = w) →
y = w) |
| 9 | 7, 8 | syl6 23 |
. . . . . . . . . . . 12
⊢ (((x
∈ H ∧ z ∈ H)
∧ (y ∈ (⊥ ‘H) ∧ w
∈ (⊥ ‘H))) →
((A = (x +v y) ∧ A =
(z +v w)) → y =
w)) |
| 10 | 9 | ancoms 334 |
. . . . . . . . . . 11
⊢ (((y
∈ (⊥ ‘H) ∧ w ∈ (⊥ ‘H)) ∧ (x
∈ H ∧ z ∈ H))
→ ((A = (x +v y) ∧ A =
(z +v w)) → y =
w)) |
| 11 | 10 | exp 291 |
. . . . . . . . . 10
⊢ ((y
∈ (⊥ ‘H) ∧ w ∈ (⊥ ‘H)) → ((x
∈ H ∧ z ∈ H)
→ ((A = (x +v y) ∧ A =
(z +v w)) → y =
w))) |
| 12 | 11 | imp3a 279 |
. . . . . . . . 9
⊢ ((y
∈ (⊥ ‘H) ∧ w ∈ (⊥ ‘H)) → (((x
∈ H ∧ z ∈ H)
∧ (A = (x +v y) ∧ A =
(z +v w))) → y =
w)) |
| 13 | 12 | adantl 305 |
. . . . . . . 8
⊢ ((A
∈ ℋ ∧ (y ∈ (⊥
‘H) ∧ w ∈ (⊥ ‘H))) → (((x
∈ H ∧ z ∈ H)
∧ (A = (x +v y) ∧ A =
(z +v w))) → y =
w)) |
| 14 | 13 | 19.23advv 955 |
. . . . . . 7
⊢ ((A
∈ ℋ ∧ (y ∈ (⊥
‘H) ∧ w ∈ (⊥ ‘H))) → (∃x∃z((x ∈
H ∧ z ∈ H)
∧ (A = (x +v y) ∧ A =
(z +v w))) → y =
w)) |
| 15 | | opreq1 3006 |
. . . . . . . . . . 11
⊢ (x =
z → (x +v w) = (z
+v w)) |
| 16 | 15 | cleq2d 1112 |
. . . . . . . . . 10
⊢ (x =
z → (A = (x
+v w) ↔ A = (z
+v w))) |
| 17 | 16 | cbvrexv 1334 |
. . . . . . . . 9
⊢ (∃x ∈ H
A = (x
+v w) ↔
∃z ∈ H A = (z +v w)) |
| 18 | 17 | anbi2i 367 |
. . . . . . . 8
⊢ ((∃x ∈ H
A = (x
+v y) ∧
∃x ∈ H A = (x +v w)) ↔ (∃x ∈ H
A = (x
+v y) ∧
∃z ∈ H A = (z +v w))) |
| 19 | | reeanv 1316 |
. . . . . . . . 9
⊢ (∃x ∈ H
∃z ∈ H (A = (x +v y) ∧ A =
(z +v w)) ↔ (∃x ∈ H
A = (x
+v y) ∧
∃z ∈ H A = (z +v w))) |
| 20 | | r2ex 1241 |
. . . . . . . . 9
⊢ (∃x ∈ H
∃z ∈ H (A = (x +v y) ∧ A =
(z +v w)) ↔ ∃x∃z((x ∈
H ∧ z ∈ H)
∧ (A = (x +v y) ∧ A =
(z +v w)))) |
| 21 | 19, 20 | bitr3 153 |
. . . . . . . 8
⊢ ((∃x ∈ H
A = (x
+v y) ∧
∃z ∈ H A = (z +v w)) ↔ ∃x∃z((x ∈
H ∧ z ∈ H)
∧ (A = (x +v y) ∧ A =
(z +v w)))) |
| 22 | 18, 21 | bitr 151 |
. . . . . . 7
⊢ ((∃x ∈ H
A = (x
+v y) ∧
∃x ∈ H A = (x +v w)) ↔ ∃x∃z((x ∈
H ∧ z ∈ H)
∧ (A = (x +v y) ∧ A =
(z +v w)))) |
| 23 | 14, 22 | syl5ib 181 |
. . . . . 6
⊢ ((A
∈ ℋ ∧ (y ∈ (⊥
‘H) ∧ w ∈ (⊥ ‘H))) → ((∃x ∈ H
A = (x
+v y) ∧
∃x ∈ H A = (x +v w)) → y =
w)) |
| 24 | 23 | exp32 294 |
. . . . 5
⊢ (A
∈ ℋ → (y ∈ (⊥
‘H) → (w ∈ (⊥ ‘H) → ((∃x ∈ H
A = (x
+v y) ∧
∃x ∈ H A = (x +v w)) → y =
w)))) |
| 25 | 24 | r19.21adv 1262 |
. . . 4
⊢ (A
∈ ℋ → (y ∈ (⊥
‘H) → ∀w ∈ (⊥ ‘H)((∃x
∈ H A = (x
+v y) ∧
∃x ∈ H A = (x +v w)) → y =
w))) |
| 26 | 25 | r19.21aiv 1259 |
. . 3
⊢ (A
∈ ℋ → ∀y ∈
(⊥ ‘H)∀w ∈ (⊥ ‘H)((∃x
∈ H A = (x
+v y) ∧
∃x ∈ H A = (x +v w)) → y =
w)) |
| 27 | 5, 26 | jca 236 |
. 2
⊢ (A
∈ ℋ → (∃y ∈
(⊥ ‘H)∃x ∈ H
A = (x
+v y) ∧
∀y ∈ (⊥ ‘H)∀w
∈ (⊥ ‘H)((∃x ∈ H
A = (x
+v y) ∧
∃x ∈ H A = (x +v w)) → y =
w))) |
| 28 | | opreq2 3007 |
. . . . 5
⊢ (y =
w → (x +v y) = (x
+v w)) |
| 29 | 28 | cleq2d 1112 |
. . . 4
⊢ (y =
w → (A = (x
+v y) ↔ A = (x
+v w))) |
| 30 | 29 | birexdv 1220 |
. . 3
⊢ (y =
w → (∃x ∈ H
A = (x
+v y) ↔
∃x ∈ H A = (x +v w))) |
| 31 | 30 | reu4 1340 |
. 2
⊢ (∃!y ∈ (⊥ ‘H)∃x
∈ H A = (x
+v y) ↔
(∃y ∈ (⊥ ‘H)∃x
∈ H A = (x
+v y) ∧
∀y ∈ (⊥ ‘H)∀w
∈ (⊥ ‘H)((∃x ∈ H
A = (x
+v y) ∧
∃x ∈ H A = (x +v w)) → y =
w))) |
| 32 | 27, 31 | sylibr 175 |
1
⊢ (A
∈ ℋ → ∃!y ∈
(⊥ ‘H)∃x ∈ H
A = (x
+v y)) |