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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 7750 | . 2 ⊢ 𝐹 Fn (𝐴 × 𝐵) |
4 | 3 | fndmi 6426 | 1 ⊢ dom 𝐹 = (𝐴 × 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 ∈ wcel 2111 Vcvv 3441 × cxp 5517 dom cdm 5519 ∈ cmpo 7137 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-ral 3111 df-rex 3112 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5425 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-fv 6332 df-oprab 7139 df-mpo 7140 df-1st 7671 df-2nd 7672 |
This theorem is referenced by: 1div0 11288 swrd00 13997 swrd0 14011 pfx00 14027 pfx0 14028 repsundef 14124 cshnz 14145 imasvscafn 16802 imasvscaval 16803 iscnp2 21844 xkococnlem 22264 ucnima 22887 ucnprima 22888 tngtopn 23256 1div0apr 28253 smatlem 31150 elunirnmbfm 31621 rrxsphere 45162 |
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