| Intuitionistic Logic Explorer | 
      
      
      < Previous  
      Next >
      
       Nearby theorems  | 
  ||
| 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 6261 | . 2 ⊢ 𝐹 Fn (𝐴 × 𝐵) | 
| 4 | fndm 5357 | . 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 2167 Vcvv 2763 × cxp 4661 dom cdm 4663 Fn wfn 5253 ∈ cmpo 5924 | 
| 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 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 | 
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-un 3161 df-in 3163 df-ss 3170 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-iun 3918 df-br 4034 df-opab 4095 df-mpt 4096 df-id 4328 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-res 4675 df-ima 4676 df-iota 5219 df-fun 5260 df-fn 5261 df-f 5262 df-fv 5266 df-oprab 5926 df-mpo 5927 df-1st 6198 df-2nd 6199 | 
| This theorem is referenced by: genipdm 7583 | 
| Copyright terms: Public domain | W3C validator |