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| Mirrors > Home > MPE Home > Th. List > dmmpo | Structured version Visualization version GIF version | ||
| Description: Domain of a class given by the maps-to notation. (Contributed by FL, 17-May-2010.) |
| Ref | Expression |
|---|---|
| fmpo.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) |
| fnmpoi.2 | ⊢ 𝐶 ∈ V |
| Ref | Expression |
|---|---|
| dmmpo | ⊢ dom 𝐹 = (𝐴 × 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fmpo.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) | |
| 2 | fnmpoi.2 | . . 3 ⊢ 𝐶 ∈ V | |
| 3 | 1, 2 | fnmpoi 8051 | . 2 ⊢ 𝐹 Fn (𝐴 × 𝐵) |
| 4 | 3 | fndmi 6624 | 1 ⊢ dom 𝐹 = (𝐴 × 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 Vcvv 3450 × cxp 5638 dom cdm 5640 ∈ cmpo 7391 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5253 ax-nul 5263 ax-pr 5389 ax-un 7713 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-sbc 3756 df-csb 3865 df-dif 3919 df-un 3921 df-in 3923 df-ss 3933 df-nul 4299 df-if 4491 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-iun 4959 df-br 5110 df-opab 5172 df-mpt 5191 df-id 5535 df-xp 5646 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-iota 6466 df-fun 6515 df-fn 6516 df-f 6517 df-fv 6521 df-oprab 7393 df-mpo 7394 df-1st 7970 df-2nd 7971 |
| This theorem is referenced by: 1div0 11843 1div0OLD 11844 swrd00 14615 swrd0 14629 pfx00 14645 pfx0 14646 repsundef 14742 cshnz 14763 imasvscafn 17506 imasvscaval 17507 iscnp2 23132 xkococnlem 23552 ucnima 24174 ucnprima 24175 tngtopn 24544 1div0apr 30403 smatlem 33793 elunirnmbfm 34248 rrxsphere 48727 |
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