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Mirrors > Home > ILE Home > Th. List > dmmpo | 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 6244 | . 2 ⊢ 𝐹 Fn (𝐴 × 𝐵) |
4 | fndm 5341 | . 2 ⊢ (𝐹 Fn (𝐴 × 𝐵) → dom 𝐹 = (𝐴 × 𝐵)) | |
5 | 3, 4 | ax-mp 5 | 1 ⊢ dom 𝐹 = (𝐴 × 𝐵) |
Colors of variables: wff set class |
Syntax hints: = wceq 1364 ∈ wcel 2160 Vcvv 2756 × cxp 4649 dom cdm 4651 Fn wfn 5237 ∈ cmpo 5908 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2162 ax-14 2163 ax-ext 2171 ax-sep 4143 ax-pow 4199 ax-pr 4234 ax-un 4458 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ral 2473 df-rex 2474 df-rab 2477 df-v 2758 df-sbc 2982 df-csb 3077 df-un 3153 df-in 3155 df-ss 3162 df-pw 3599 df-sn 3620 df-pr 3621 df-op 3623 df-uni 3832 df-iun 3910 df-br 4026 df-opab 4087 df-mpt 4088 df-id 4318 df-xp 4657 df-rel 4658 df-cnv 4659 df-co 4660 df-dm 4661 df-rn 4662 df-res 4663 df-ima 4664 df-iota 5203 df-fun 5244 df-fn 5245 df-f 5246 df-fv 5250 df-oprab 5910 df-mpo 5911 df-1st 6180 df-2nd 6181 |
This theorem is referenced by: genipdm 7562 |
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