Proof of Theorem genpnmax
| Step | Hyp | Ref
| Expression |
| 1 | | genp.1 |
. . . 4
⊢ F =
{〈〈w, v〉, u〉∣((w ∈ P ∧ v ∈ P) ∧ u = {x∣∃y
∈ w ∃z ∈ v
x = (yGz)})} |
| 2 | 1 | genpv 3896 |
. . 3
⊢ ((A
∈ P ∧ B ∈
P) → (AFB) = {f∣∃g∃h((g ∈
A ∧ h ∈ B)
∧ f = (gGh))}) |
| 3 | 2 | cleqabd 1178 |
. 2
⊢ ((A
∈ P ∧ B ∈
P) → (f ∈ (AFB) ↔ ∃g∃h((g ∈
A ∧ h ∈ B)
∧ f = (gGh)))) |
| 4 | | breq1 2065 |
. . . . . . . . 9
⊢ (f =
(gGh) →
(f <Q x ↔ (gGh) <Q x)) |
| 5 | 4 | anbi2d 468 |
. . . . . . . 8
⊢ (f =
(gGh) →
((x ∈ (AFB) ∧ f
<Q x) ↔
(x ∈ (AFB) ∧ (gGh) <Q x))) |
| 6 | 5 | biexdv 936 |
. . . . . . 7
⊢ (f =
(gGh) →
(∃x(x ∈ (AFB) ∧ f
<Q x) ↔
∃x(x ∈ (AFB) ∧ (gGh) <Q x))) |
| 7 | | prnmax 3893 |
. . . . . . . . . 10
⊢ ((A
∈ P ∧ g ∈
A) → ∃y(y ∈
A ∧ g <Q y)) |
| 8 | 7 | adantr 306 |
. . . . . . . . 9
⊢ (((A
∈ P ∧ g ∈
A) ∧ (B ∈ P ∧ h ∈ B))
→ ∃y(y ∈ A ∧
g <Q y)) |
| 9 | 1 | genpprecl 3898 |
. . . . . . . . . . . . . . . 16
⊢ ((A
∈ P ∧ B ∈
P) → ((y ∈ A ∧ h ∈
B) → (yGh) ∈ (AFB))) |
| 10 | 9 | exp4b 296 |
. . . . . . . . . . . . . . 15
⊢ (A
∈ P → (B ∈
P → (y ∈ A → (h
∈ B → (yGh) ∈ (AFB))))) |
| 11 | 10 | com34 36 |
. . . . . . . . . . . . . 14
⊢ (A
∈ P → (B ∈
P → (h ∈ B → (y
∈ A → (yGh) ∈ (AFB))))) |
| 12 | 11 | imp32 281 |
. . . . . . . . . . . . 13
⊢ ((A
∈ P ∧ (B ∈
P ∧ h ∈ B)) → (y
∈ A → (yGh) ∈ (AFB))) |
| 13 | | elprpq 3889 |
. . . . . . . . . . . . . . 15
⊢ ((B
∈ P ∧ h ∈
B) → h ∈ Q) |
| 14 | | visset 1350 |
. . . . . . . . . . . . . . . . 17
⊢ g
∈ V |
| 15 | | visset 1350 |
. . . . . . . . . . . . . . . . 17
⊢ y
∈ V |
| 16 | | genpnmax.2 |
. . . . . . . . . . . . . . . . 17
⊢ (v
∈ Q → (z
<Q w ↔
(vGz)
<Q (vGw))) |
| 17 | | visset 1350 |
. . . . . . . . . . . . . . . . 17
⊢ h
∈ V |
| 18 | | genpnmax.3 |
. . . . . . . . . . . . . . . . 17
⊢ (zGw) = (wGz) |
| 19 | 14, 15, 16, 17, 18 | caoprord2 3071 |
. . . . . . . . . . . . . . . 16
⊢ (h
∈ Q → (g
<Q y ↔
(gGh)
<Q (yGh))) |
| 20 | 19 | biimpd 135 |
. . . . . . . . . . . . . . 15
⊢ (h
∈ Q → (g
<Q y →
(gGh)
<Q (yGh))) |
| 21 | 13, 20 | syl 12 |
. . . . . . . . . . . . . 14
⊢ ((B
∈ P ∧ h ∈
B) → (g <Q y → (gGh) <Q (yGh))) |
| 22 | 21 | adantl 305 |
. . . . . . . . . . . . 13
⊢ ((A
∈ P ∧ (B ∈
P ∧ h ∈ B)) → (g
<Q y →
(gGh)
<Q (yGh))) |
| 23 | 12, 22 | anim12d 431 |
. . . . . . . . . . . 12
⊢ ((A
∈ P ∧ (B ∈
P ∧ h ∈ B)) → ((y
∈ A ∧ g <Q y) → ((yGh) ∈ (AFB) ∧ (gGh) <Q (yGh)))) |
| 24 | | oprex 3018 |
. . . . . . . . . . . . 13
⊢ (yGh) ∈ V |
| 25 | | eleq1 1149 |
. . . . . . . . . . . . . 14
⊢ (x =
(yGh) →
(x ∈ (AFB) ↔ (yGh) ∈ (AFB))) |
| 26 | | breq2 2066 |
. . . . . . . . . . . . . 14
⊢ (x =
(yGh) →
((gGh)
<Q x ↔
(gGh)
<Q (yGh))) |
| 27 | 25, 26 | anbi12d 476 |
. . . . . . . . . . . . 13
⊢ (x =
(yGh) →
((x ∈ (AFB) ∧ (gGh) <Q x) ↔ ((yGh) ∈ (AFB) ∧ (gGh) <Q (yGh)))) |
| 28 | 24, 27 | cla4ev 1401 |
. . . . . . . . . . . 12
⊢ (((yGh) ∈ (AFB) ∧ (gGh) <Q (yGh)) → ∃x(x ∈
(AFB) ∧
(gGh)
<Q x)) |
| 29 | 23, 28 | syl6 23 |
. . . . . . . . . . 11
⊢ ((A
∈ P ∧ (B ∈
P ∧ h ∈ B)) → ((y
∈ A ∧ g <Q y) → ∃x(x ∈
(AFB) ∧
(gGh)
<Q x))) |
| 30 | 29 | adantlr 310 |
. . . . . . . . . 10
⊢ (((A
∈ P ∧ g ∈
A) ∧ (B ∈ P ∧ h ∈ B))
→ ((y ∈ A ∧ g
<Q y) →
∃x(x ∈ (AFB) ∧ (gGh) <Q x))) |
| 31 | 30 | 19.23adv 954 |
. . . . . . . . 9
⊢ (((A
∈ P ∧ g ∈
A) ∧ (B ∈ P ∧ h ∈ B))
→ (∃y(y ∈ A ∧
g <Q y) → ∃x(x ∈
(AFB) ∧
(gGh)
<Q x))) |
| 32 | 8, 31 | mpd 46 |
. . . . . . . 8
⊢ (((A
∈ P ∧ g ∈
A) ∧ (B ∈ P ∧ h ∈ B))
→ ∃x(x ∈ (AFB) ∧ (gGh) <Q x)) |
| 33 | 32 | an4s 390 |
. . . . . . 7
⊢ (((A
∈ P ∧ B ∈
P) ∧ (g ∈ A ∧ h ∈
B)) → ∃x(x ∈
(AFB) ∧
(gGh)
<Q x)) |
| 34 | 6, 33 | syl5bir 184 |
. . . . . 6
⊢ (f =
(gGh) →
(((A ∈ P ∧ B ∈ P) ∧ (g ∈ A ∧
h ∈ B)) → ∃x(x ∈
(AFB) ∧
f <Q x))) |
| 35 | 34 | exp3a 292 |
. . . . 5
⊢ (f =
(gGh) →
((A ∈ P ∧ B ∈ P) → ((g ∈ A ∧
h ∈ B) → ∃x(x ∈
(AFB) ∧
f <Q x)))) |
| 36 | 35 | com3l 34 |
. . . 4
⊢ ((A
∈ P ∧ B ∈
P) → ((g ∈ A ∧ h ∈
B) → (f = (gGh) →
∃x(x ∈ (AFB) ∧ f
<Q x)))) |
| 37 | 36 | imp3a 279 |
. . 3
⊢ ((A
∈ P ∧ B ∈
P) → (((g ∈
A ∧ h ∈ B)
∧ f = (gGh)) → ∃x(x ∈
(AFB) ∧
f <Q x))) |
| 38 | 37 | 19.23advv 955 |
. 2
⊢ ((A
∈ P ∧ B ∈
P) → (∃g∃h((g ∈
A ∧ h ∈ B)
∧ f = (gGh)) → ∃x(x ∈
(AFB) ∧
f <Q x))) |
| 39 | 3, 38 | sylbid 178 |
1
⊢ ((A
∈ P ∧ B ∈
P) → (f ∈ (AFB) → ∃x(x ∈
(AFB) ∧
f <Q x))) |