Proof of Theorem supmo
| Step | Hyp | Ref
| Expression |
| 1 | | eleq1 1532 |
. . . 4
⊢ (x =
w → (x ∈ A
↔ w ∈ A)) |
| 2 | | breq1 2618 |
. . . . . . 7
⊢ (x =
w → (xRy ↔ wRy)) |
| 3 | 2 | negbid 610 |
. . . . . 6
⊢ (x =
w → (¬ xRy ↔ ¬ wRy)) |
| 4 | 3 | ralbidv 1661 |
. . . . 5
⊢ (x =
w → (∀y ∈ B ¬
xRy ↔
∀y ∈ B ¬ wRy)) |
| 5 | | breq2 2619 |
. . . . . . 7
⊢ (x =
w → (yRx ↔ yRw)) |
| 6 | 5 | imbi1d 612 |
. . . . . 6
⊢ (x =
w → ((yRx → ∃z ∈ B
yRz) ↔
(yRw →
∃z ∈ B yRz))) |
| 7 | 6 | ralbidv 1661 |
. . . . 5
⊢ (x =
w → (∀y ∈ A
(yRx →
∃z ∈ B yRz) ↔
∀y ∈ A (yRw →
∃z ∈ B yRz))) |
| 8 | 4, 7 | anbi12d 627 |
. . . 4
⊢ (x =
w → ((∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz)) ↔
(∀y ∈ B ¬ wRy ⋀ ∀y ∈ A
(yRw →
∃z ∈ B yRz)))) |
| 9 | 1, 8 | anbi12d 627 |
. . 3
⊢ (x =
w → ((x ∈ A
⋀ (∀y ∈ B ¬ xRy ⋀ ∀y ∈ A
(yRx →
∃z ∈ B yRz))) ↔
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz))))) |
| 10 | 9 | mo4 1402 |
. 2
⊢ (∃*x(x ∈
A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ↔
∀x∀w(((x ∈
A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
x = w)) |
| 11 | | breq1 2618 |
. . . . . . . . . . . . . 14
⊢ (y =
x → (yRw ↔ xRw)) |
| 12 | | breq1 2618 |
. . . . . . . . . . . . . . 15
⊢ (y =
x → (yRz ↔ xRz)) |
| 13 | 12 | rexbidv 1662 |
. . . . . . . . . . . . . 14
⊢ (y =
x → (∃z ∈ B
yRz ↔
∃z ∈ B xRz)) |
| 14 | 11, 13 | imbi12d 625 |
. . . . . . . . . . . . 13
⊢ (y =
x → ((yRw → ∃z ∈ B
yRz) ↔
(xRw →
∃z ∈ B xRz))) |
| 15 | 14 | rcla4va 1872 |
. . . . . . . . . . . 12
⊢ ((x
∈ A ⋀ ∀y ∈ A
(yRw →
∃z ∈ B yRz)) →
(xRw →
∃z ∈ B xRz)) |
| 16 | 15 | con3d 95 |
. . . . . . . . . . 11
⊢ ((x
∈ A ⋀ ∀y ∈ A
(yRw →
∃z ∈ B yRz)) →
(¬ ∃z ∈ B xRz → ¬
xRw)) |
| 17 | 16 | imp 350 |
. . . . . . . . . 10
⊢ (((x
∈ A ⋀ ∀y ∈ A
(yRw →
∃z ∈ B yRz)) ⋀
¬ ∃z ∈ B xRz) → ¬
xRw) |
| 18 | | breq2 2619 |
. . . . . . . . . . . . 13
⊢ (y =
z → (xRy ↔ xRz)) |
| 19 | 18 | negbid 610 |
. . . . . . . . . . . 12
⊢ (y =
z → (¬ xRy ↔ ¬ xRz)) |
| 20 | 19 | cbvralv 1797 |
. . . . . . . . . . 11
⊢ (∀y ∈ B ¬
xRy ↔
∀z ∈ B ¬ xRz) |
| 21 | | ralnex 1651 |
. . . . . . . . . . 11
⊢ (∀z ∈ B ¬
xRz ↔ ¬
∃z ∈ B xRz) |
| 22 | 20, 21 | bitr 173 |
. . . . . . . . . 10
⊢ (∀y ∈ B ¬
xRy ↔ ¬
∃z ∈ B xRz) |
| 23 | 17, 22 | sylan2b 452 |
. . . . . . . . 9
⊢ (((x
∈ A ⋀ ∀y ∈ A
(yRw →
∃z ∈ B yRz)) ⋀
∀y ∈ B ¬ xRy) → ¬ xRw) |
| 24 | 23 | an1rs 489 |
. . . . . . . 8
⊢ (((x
∈ A ⋀ ∀y ∈ B ¬
xRy) ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)) →
¬ xRw) |
| 25 | 24 | adantlrr 399 |
. . . . . . 7
⊢ (((x
∈ A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)) →
¬ xRw) |
| 26 | 25 | adantrl 394 |
. . . . . 6
⊢ (((x
∈ A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
(∀y ∈ B ¬ wRy ⋀ ∀y ∈ A
(yRw →
∃z ∈ B yRz))) →
¬ xRw) |
| 27 | 26 | adantrl 394 |
. . . . 5
⊢ (((x
∈ A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
¬ xRw) |
| 28 | | breq1 2618 |
. . . . . . . . . . . . . 14
⊢ (y =
w → (yRx ↔ wRx)) |
| 29 | | breq1 2618 |
. . . . . . . . . . . . . . 15
⊢ (y =
w → (yRz ↔ wRz)) |
| 30 | 29 | rexbidv 1662 |
. . . . . . . . . . . . . 14
⊢ (y =
w → (∃z ∈ B
yRz ↔
∃z ∈ B wRz)) |
| 31 | 28, 30 | imbi12d 625 |
. . . . . . . . . . . . 13
⊢ (y =
w → ((yRx → ∃z ∈ B
yRz) ↔
(wRx →
∃z ∈ B wRz))) |
| 32 | 31 | rcla4cva 1873 |
. . . . . . . . . . . 12
⊢ ((∀y ∈ A
(yRx →
∃z ∈ B yRz) ⋀
w ∈ A) → (wRx → ∃z ∈ B
wRz)) |
| 33 | 32 | con3d 95 |
. . . . . . . . . . 11
⊢ ((∀y ∈ A
(yRx →
∃z ∈ B yRz) ⋀
w ∈ A) → (¬ ∃z ∈ B
wRz → ¬
wRx)) |
| 34 | 33 | imp 350 |
. . . . . . . . . 10
⊢ (((∀y ∈ A
(yRx →
∃z ∈ B yRz) ⋀
w ∈ A) ⋀ ¬ ∃z ∈ B
wRz) → ¬
wRx) |
| 35 | | breq2 2619 |
. . . . . . . . . . . . 13
⊢ (y =
z → (wRy ↔ wRz)) |
| 36 | 35 | negbid 610 |
. . . . . . . . . . . 12
⊢ (y =
z → (¬ wRy ↔ ¬ wRz)) |
| 37 | 36 | cbvralv 1797 |
. . . . . . . . . . 11
⊢ (∀y ∈ B ¬
wRy ↔
∀z ∈ B ¬ wRz) |
| 38 | | ralnex 1651 |
. . . . . . . . . . 11
⊢ (∀z ∈ B ¬
wRz ↔ ¬
∃z ∈ B wRz) |
| 39 | 37, 38 | bitr 173 |
. . . . . . . . . 10
⊢ (∀y ∈ B ¬
wRy ↔ ¬
∃z ∈ B wRz) |
| 40 | 34, 39 | sylan2b 452 |
. . . . . . . . 9
⊢ (((∀y ∈ A
(yRx →
∃z ∈ B yRz) ⋀
w ∈ A) ⋀ ∀y ∈ B ¬
wRy) → ¬
wRx) |
| 41 | 40 | anasss 440 |
. . . . . . . 8
⊢ ((∀y ∈ A
(yRx →
∃z ∈ B yRz) ⋀
(w ∈ A ⋀ ∀y ∈ B ¬
wRy)) →
¬ wRx) |
| 42 | 41 | adantrrr 403 |
. . . . . . 7
⊢ ((∀y ∈ A
(yRx →
∃z ∈ B yRz) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
¬ wRx) |
| 43 | 42 | adantll 392 |
. . . . . 6
⊢ (((∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz)) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
¬ wRx) |
| 44 | 43 | adantll 392 |
. . . . 5
⊢ (((x
∈ A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
¬ wRx) |
| 45 | 27, 44 | jca 288 |
. . . 4
⊢ (((x
∈ A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
(¬ xRw ⋀ ¬
wRx)) |
| 46 | | supmo.1 |
. . . . . 6
⊢ R Or
A |
| 47 | | sotrieq2 2858 |
. . . . . 6
⊢ ((R Or
A ⋀ (x ∈ A
⋀ w ∈ A)) → (x =
w ↔ (¬ xRw ⋀ ¬ wRx))) |
| 48 | 46, 47 | mpan 694 |
. . . . 5
⊢ ((x
∈ A ⋀ w ∈ A)
→ (x = w ↔ (¬ xRw ⋀ ¬ wRx))) |
| 49 | 48 | ad2ant2r 409 |
. . . 4
⊢ (((x
∈ A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
(x = w
↔ (¬ xRw ⋀ ¬
wRx))) |
| 50 | 45, 49 | mpbird 196 |
. . 3
⊢ (((x
∈ A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
x = w) |
| 51 | 50 | ax-gen 962 |
. 2
⊢ ∀w(((x ∈
A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) ⋀
(w ∈ A ⋀ (∀y ∈ B ¬
wRy ⋀
∀y ∈ A (yRw →
∃z ∈ B yRz)))) →
x = w) |
| 52 | 10, 51 | mpgbir 987 |
1
⊢ ∃*x(x ∈
A ⋀ (∀y ∈ B ¬
xRy ⋀
∀y ∈ A (yRx →
∃z ∈ B yRz))) |