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| Mirrors > Home > MPE Home > Th. List > tz9.12lem2 | Structured version Visualization version GIF version | ||
| Description: Lemma for tz9.12 9760. (Contributed by NM, 22-Sep-2003.) |
| Ref | Expression |
|---|---|
| tz9.12lem.1 | ⊢ 𝐴 ∈ V |
| tz9.12lem.2 | ⊢ 𝐹 = (𝑧 ∈ V ↦ ∩ {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1‘𝑣)}) |
| Ref | Expression |
|---|---|
| tz9.12lem2 | ⊢ suc ∪ (𝐹 “ 𝐴) ∈ On |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tz9.12lem.1 | . . . 4 ⊢ 𝐴 ∈ V | |
| 2 | tz9.12lem.2 | . . . 4 ⊢ 𝐹 = (𝑧 ∈ V ↦ ∩ {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1‘𝑣)}) | |
| 3 | 1, 2 | tz9.12lem1 9757 | . . 3 ⊢ (𝐹 “ 𝐴) ⊆ On |
| 4 | 2 | funmpt2 6575 | . . . . 5 ⊢ Fun 𝐹 |
| 5 | 1 | funimaex 6623 | . . . . 5 ⊢ (Fun 𝐹 → (𝐹 “ 𝐴) ∈ V) |
| 6 | 4, 5 | ax-mp 5 | . . . 4 ⊢ (𝐹 “ 𝐴) ∈ V |
| 7 | 6 | ssonunii 7778 | . . 3 ⊢ ((𝐹 “ 𝐴) ⊆ On → ∪ (𝐹 “ 𝐴) ∈ On) |
| 8 | 3, 7 | ax-mp 5 | . 2 ⊢ ∪ (𝐹 “ 𝐴) ∈ On |
| 9 | 8 | onsuci 7833 | 1 ⊢ suc ∪ (𝐹 “ 𝐴) ∈ On |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2142 {crab 3415 Vcvv 3454 ⊆ wss 3904 ∪ cuni 4871 ∩ cint 4911 ↦ cmpt 5191 “ cima 5663 Oncon0 6360 suc csuc 6362 Fun wfun 6530 ‘cfv 6536 𝑅1cr1 9732 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-pr 5403 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-int 4912 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-ord 6363 df-on 6364 df-suc 6366 df-fun 6538 |
| This theorem is used by: tz9.12lem3 9759 tz9.12 9760 |
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