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| Mirrors > Home > MPE Home > Th. List > mpoexxg | 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 |
|---|---|
| mpoexg.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) |
| Ref | Expression |
|---|---|
| mpoexxg | ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆) → 𝐹 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpoexg.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) | |
| 2 | 1 | mpofun 7543 | . 2 ⊢ Fun 𝐹 |
| 3 | 1 | dmmpossx 8069 | . . 3 ⊢ dom 𝐹 ⊆ ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) |
| 4 | vsnex 5408 | . . . . . 6 ⊢ {𝑥} ∈ V | |
| 5 | xpexg 7755 | . . . . . 6 ⊢ (({𝑥} ∈ V ∧ 𝐵 ∈ 𝑆) → ({𝑥} × 𝐵) ∈ V) | |
| 6 | 4, 5 | mpan 703 | . . . . 5 ⊢ (𝐵 ∈ 𝑆 → ({𝑥} × 𝐵) ∈ V) |
| 7 | 6 | ralimi 3104 | . . . 4 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆 → ∀𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) |
| 8 | iunexg 7966 | . . . 4 ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) → ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) | |
| 9 | 7, 8 | sylan2 605 | . . 3 ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆) → ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) |
| 10 | ssexg 5292 | . . 3 ⊢ ((dom 𝐹 ⊆ ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∧ ∪ 𝑥 ∈ 𝐴 ({𝑥} × 𝐵) ∈ V) → dom 𝐹 ∈ V) | |
| 11 | 3, 9, 10 | sylancr 599 | . 2 ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆) → dom 𝐹 ∈ V) |
| 12 | funex 7224 | . 2 ⊢ ((Fun 𝐹 ∧ dom 𝐹 ∈ V) → 𝐹 ∈ V) | |
| 13 | 2, 11, 12 | sylancr 599 | 1 ⊢ ((𝐴 ∈ 𝑅 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑆) → 𝐹 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2146 ∀wral 3081 Vcvv 3457 ⊆ wss 3906 {csn 4591 ∪ ciun 4958 × cxp 5661 dom cdm 5663 Fun wfun 6534 ∈ cmpo 7421 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-oprab 7423 df-mpo 7424 df-1st 7992 df-2nd 7993 |
| This theorem is used by: mpoexg 8079 mpoex 8082 mpoexd 8083 gsum2d2lem 20089 taylfval 26575 ptrest 38329 |
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