Proof of Theorem infxpidmlem10
| Step | Hyp | Ref
| Expression |
| 1 | | psseq1 1559 |
. . . . . . . . 9
⊢ (g =
∅ → (g ⊂ v ↔ ∅ ⊂ v)) |
| 2 | | 0pss 1730 |
. . . . . . . . 9
⊢ (∅ ⊂ v ↔ ¬ v
= ∅) |
| 3 | 1, 2 | syl6bb 414 |
. . . . . . . 8
⊢ (g =
∅ → (g ⊂ v ↔ ¬ v
= ∅)) |
| 4 | 3 | bicon2d 404 |
. . . . . . 7
⊢ (g =
∅ → (v = ∅ ↔ ¬
g ⊂ v)) |
| 5 | | psseq2 1560 |
. . . . . . . . . 10
⊢ (h =
v → (g ⊂ h ↔
g ⊂ v)) |
| 6 | 5 | negbid 463 |
. . . . . . . . 9
⊢ (h =
v → (¬ g ⊂ h ↔
¬ g ⊂ v)) |
| 7 | 6 | rcla4v 1402 |
. . . . . . . 8
⊢ (∀h ∈ H ¬
g ⊂ h → (v
∈ H → ¬ g ⊂ v)) |
| 8 | 7 | imp 277 |
. . . . . . 7
⊢ ((∀h ∈ H ¬
g ⊂ h ∧ v ∈
H) → ¬ g ⊂ v) |
| 9 | 4, 8 | syl5bir 184 |
. . . . . 6
⊢ (g =
∅ → ((∀h ∈ H ¬ g ⊂
h ∧ v ∈ H)
→ v = ∅)) |
| 10 | 9 | com12 13 |
. . . . 5
⊢ ((∀h ∈ H ¬
g ⊂ h ∧ v ∈
H) → (g = ∅ → v = ∅)) |
| 11 | 10 | con3d 87 |
. . . 4
⊢ ((∀h ∈ H ¬
g ⊂ h ∧ v ∈
H) → (¬ v = ∅ → ¬ g = ∅)) |
| 12 | 11 | exp 291 |
. . 3
⊢ (∀h ∈ H ¬
g ⊂ h → (v
∈ H → (¬ v = ∅ → ¬ g = ∅))) |
| 13 | 12 | r19.23adv 1286 |
. 2
⊢ (∀h ∈ H ¬
g ⊂ h → (∃v ∈ H ¬
v = ∅ → ¬ g = ∅)) |
| 14 | | infxpidmlem.1 |
. . . . . . . . . . 11
⊢ H =
{f∣(f = ∅ ∨ ∃t((ω ≼ t ∧ t
⊆ A) ∧ f:(t ×
t)–1-1-onto→t))} |
| 15 | | visset 1350 |
. . . . . . . . . . 11
⊢ v
∈ V |
| 16 | | visset 1350 |
. . . . . . . . . . 11
⊢ y
∈ V |
| 17 | 14, 15, 16 | infxpidmlem3 4935 |
. . . . . . . . . 10
⊢ (((ω ≼ y ∧ y
⊆ A) ∧ v:(y ×
y)–1-1-onto→y) →
v ∈ H) |
| 18 | 17 | exp 291 |
. . . . . . . . 9
⊢ ((ω ≼ y ∧ y
⊆ A) → (v:(y ×
y)–1-1-onto→y →
v ∈ H)) |
| 19 | | f1ofo 2806 |
. . . . . . . . . . . . . . . 16
⊢ (v:(y ×
y)–1-1-onto→y →
v:(y
× y)–onto→y) |
| 20 | | forn 2789 |
. . . . . . . . . . . . . . . 16
⊢ (v:(y ×
y)–onto→y →
ran v = y) |
| 21 | 19, 20 | syl 12 |
. . . . . . . . . . . . . . 15
⊢ (v:(y ×
y)–1-1-onto→y →
ran v = y) |
| 22 | 21 | cleqcomd 1106 |
. . . . . . . . . . . . . 14
⊢ (v:(y ×
y)–1-1-onto→y →
y = ran v) |
| 23 | | rneq 2555 |
. . . . . . . . . . . . . . 15
⊢ (v =
∅ → ran v = ran
∅) |
| 24 | | rn0 2567 |
. . . . . . . . . . . . . . 15
⊢ ran ∅ = ∅ |
| 25 | 23, 24 | syl6eq 1140 |
. . . . . . . . . . . . . 14
⊢ (v =
∅ → ran v = ∅) |
| 26 | 22, 25 | sylan9eq 1144 |
. . . . . . . . . . . . 13
⊢ ((v:(y ×
y)–1-1-onto→y ∧
v = ∅) → y = ∅) |
| 27 | 26 | exp 291 |
. . . . . . . . . . . 12
⊢ (v:(y ×
y)–1-1-onto→y →
(v = ∅ → y = ∅)) |
| 28 | 16 | infn0 3427 |
. . . . . . . . . . . 12
⊢ (ω ≼ y → ¬ y
= ∅) |
| 29 | 27, 28 | nsyli 106 |
. . . . . . . . . . 11
⊢ (v:(y ×
y)–1-1-onto→y →
(ω ≼ y → ¬ v = ∅)) |
| 30 | 29 | com12 13 |
. . . . . . . . . 10
⊢ (ω ≼ y → (v:(y ×
y)–1-1-onto→y →
¬ v = ∅)) |
| 31 | 30 | adantr 306 |
. . . . . . . . 9
⊢ ((ω ≼ y ∧ y
⊆ A) → (v:(y ×
y)–1-1-onto→y →
¬ v = ∅)) |
| 32 | 18, 31 | jcad 455 |
. . . . . . . 8
⊢ ((ω ≼ y ∧ y
⊆ A) → (v:(y ×
y)–1-1-onto→y →
(v ∈ H ∧ ¬ v
= ∅))) |
| 33 | 32 | 19.22dv 947 |
. . . . . . 7
⊢ ((ω ≼ y ∧ y
⊆ A) → (∃v v:(y × y)–1-1-onto→y →
∃v(v ∈ H ∧
¬ v = ∅))) |
| 34 | 33 | imp 277 |
. . . . . 6
⊢ (((ω ≼ y ∧ y
⊆ A) ∧ ∃v v:(y × y)–1-1-onto→y) →
∃v(v ∈ H ∧
¬ v = ∅)) |
| 35 | 34 | an1rs 373 |
. . . . 5
⊢ (((ω ≼ y ∧ ∃v
v:(y
× y)–1-1-onto→y) ∧
y ⊆ A) → ∃v(v ∈
H ∧ ¬ v = ∅)) |
| 36 | | endom 3289 |
. . . . . 6
⊢ (ω ≈ y → ω ≼ y) |
| 37 | | omex 3475 |
. . . . . . . . . . 11
⊢ ω ∈ V |
| 38 | 37, 16, 37, 16 | xpen 3383 |
. . . . . . . . . 10
⊢ ((ω ≈ y ∧ ω ≈ y) → (ω × ω) ≈
(y × y)) |
| 39 | 38 | anidms 332 |
. . . . . . . . 9
⊢ (ω ≈ y → (ω × ω) ≈ (y × y)) |
| 40 | | xpomen 4928 |
. . . . . . . . . 10
⊢ (ω × ω) ≈
ω |
| 41 | 16, 16 | xpex 2488 |
. . . . . . . . . . 11
⊢ (y
× y) ∈ V |
| 42 | | enen1 3375 |
. . . . . . . . . . 11
⊢ (((y
× y) ∈ V ∧ (ω
× ω) ≈ (y ×
y)) → ((ω × ω)
≈ ω ↔ (y × y) ≈ ω)) |
| 43 | 41, 42 | mpan 518 |
. . . . . . . . . 10
⊢ ((ω × ω) ≈
(y × y) → ((ω × ω) ≈ ω
↔ (y × y) ≈ ω)) |
| 44 | 40, 43 | mpbii 168 |
. . . . . . . . 9
⊢ ((ω × ω) ≈
(y × y) → (y
× y) ≈ ω) |
| 45 | 39, 44 | syl 12 |
. . . . . . . 8
⊢ (ω ≈ y → (y
× y) ≈ ω) |
| 46 | | enen2 3376 |
. . . . . . . . 9
⊢ ((y
∈ V ∧ ω ≈ y)
→ ((y × y) ≈ ω ↔ (y × y)
≈ y)) |
| 47 | 16, 46 | mpan 518 |
. . . . . . . 8
⊢ (ω ≈ y → ((y
× y) ≈ ω ↔ (y × y)
≈ y)) |
| 48 | 45, 47 | mpbid 170 |
. . . . . . 7
⊢ (ω ≈ y → (y
× y) ≈ y) |
| 49 | 16 | bren 3282 |
. . . . . . 7
⊢ ((y
× y) ≈ y ↔ ∃v v:(y × y)–1-1-onto→y) |
| 50 | 48, 49 | sylib 173 |
. . . . . 6
⊢ (ω ≈ y → ∃v v:(y × y)–1-1-onto→y) |
| 51 | 36, 50 | jca 236 |
. . . . 5
⊢ (ω ≈ y → (ω ≼ y ∧ ∃v
v:(y
× y)–1-1-onto→y)) |
| 52 | 35, 51 | sylan 343 |
. . . 4
⊢ ((ω ≈ y ∧ y
⊆ A) → ∃v(v ∈
H ∧ ¬ v = ∅)) |
| 53 | 52 | 19.23aiv 952 |
. . 3
⊢ (∃y(ω ≈ y ∧ y
⊆ A) → ∃v(v ∈
H ∧ ¬ v = ∅)) |
| 54 | | infxpidmlem.2 |
. . . 4
⊢ A
∈ V |
| 55 | 54 | domen 3284 |
. . 3
⊢ (ω ≼ A ↔ ∃y(ω ≈ y ∧ y
⊆ A)) |
| 56 | | df-rex 1206 |
. . 3
⊢ (∃v ∈ H ¬
v = ∅ ↔ ∃v(v ∈
H ∧ ¬ v = ∅)) |
| 57 | 53, 55, 56 | 3imtr4 192 |
. 2
⊢ (ω ≼ A → ∃v ∈ H ¬
v = ∅) |
| 58 | 13, 57 | syl5 22 |
1
⊢ (∀h ∈ H ¬
g ⊂ h → (ω ≼ A → ¬ g
= ∅)) |