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Mirrors > Home > MPE Home > Th. List > mpt2exxg | Structured version Visualization version GIF version |
Description: Existence of an operation class abstraction (version for dependent domains). (Contributed by Mario Carneiro, 30-Dec-2016.) |
Ref | Expression |
---|---|
mpt2exg.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) |
Ref | Expression |
---|---|
mpt2exxg | ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆) → 𝐹 ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mpt2exg.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) | |
2 | 1 | mpt2fun 6994 | . 2 ⊢ Fun 𝐹 |
3 | 1 | dmmpt2ssx 7469 | . . 3 ⊢ dom 𝐹 ⊆ ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) |
4 | snex 5097 | . . . . . 6 ⊢ {𝑥} ∈ V | |
5 | xpexg 7192 | . . . . . 6 ⊢ (({𝑥} ∈ V ∧ 𝐵 ∈ 𝑆) → ({𝑥} × 𝐵) ∈ V) | |
6 | 4, 5 | mpan 682 | . . . . 5 ⊢ (𝐵 ∈ 𝑆 → ({𝑥} × 𝐵) ∈ V) |
7 | 6 | ralimi 3131 | . . . 4 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆 → ∀𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) |
8 | iunexg 7375 | . . . 4 ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) → ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) | |
9 | 7, 8 | sylan2 587 | . . 3 ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆) → ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) |
10 | ssexg 4997 | . . 3 ⊢ ((dom 𝐹 ⊆ ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∧ ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) → dom 𝐹 ∈ V) | |
11 | 3, 9, 10 | sylancr 582 | . 2 ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆) → dom 𝐹 ∈ V) |
12 | funex 6709 | . 2 ⊢ ((Fun 𝐹 ∧ dom 𝐹 ∈ V) → 𝐹 ∈ V) | |
13 | 2, 11, 12 | sylancr 582 | 1 ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆) → 𝐹 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 385 = wceq 1653 ∈ wcel 2157 ∀wral 3087 Vcvv 3383 ⊆ wss 3767 {csn 4366 ∪ ciun 4708 × cxp 5308 dom cdm 5310 Fun wfun 6093 ↦ cmpt2 6878 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1891 ax-4 1905 ax-5 2006 ax-6 2072 ax-7 2107 ax-8 2159 ax-9 2166 ax-10 2185 ax-11 2200 ax-12 2213 ax-13 2375 ax-ext 2775 ax-rep 4962 ax-sep 4973 ax-nul 4981 ax-pow 5033 ax-pr 5095 ax-un 7181 |
This theorem depends on definitions: df-bi 199 df-an 386 df-or 875 df-3an 1110 df-tru 1657 df-ex 1876 df-nf 1880 df-sb 2065 df-mo 2590 df-eu 2607 df-clab 2784 df-cleq 2790 df-clel 2793 df-nfc 2928 df-ne 2970 df-ral 3092 df-rex 3093 df-reu 3094 df-rab 3096 df-v 3385 df-sbc 3632 df-csb 3727 df-dif 3770 df-un 3772 df-in 3774 df-ss 3781 df-nul 4114 df-if 4276 df-pw 4349 df-sn 4367 df-pr 4369 df-op 4373 df-uni 4627 df-iun 4710 df-br 4842 df-opab 4904 df-mpt 4921 df-id 5218 df-xp 5316 df-rel 5317 df-cnv 5318 df-co 5319 df-dm 5320 df-rn 5321 df-res 5322 df-ima 5323 df-iota 6062 df-fun 6101 df-fn 6102 df-f 6103 df-f1 6104 df-fo 6105 df-f1o 6106 df-fv 6107 df-oprab 6880 df-mpt2 6881 df-1st 7399 df-2nd 7400 |
This theorem is referenced by: mpt2exg 7479 mpt2ex 7481 gsum2d2lem 18683 taylfval 24450 ptrest 33888 |
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