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| Mirrors > Home > MPE Home > Th. List > dmmpt | Structured version Visualization version GIF version | ||
| Description: The domain of the mapping operation in general. (Contributed by NM, 16-May-1995.) (Revised by Mario Carneiro, 22-Mar-2015.) |
| Ref | Expression |
|---|---|
| dmmpt.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) |
| Ref | Expression |
|---|---|
| dmmpt | ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfdm4 5889 | . 2 ⊢ dom 𝐹 = ran ◡𝐹 | |
| 2 | dfrn4 6215 | . 2 ⊢ ran ◡𝐹 = (◡𝐹 “ V) | |
| 3 | dmmpt.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 4 | 3 | mptpreima 6258 | . 2 ⊢ (◡𝐹 “ V) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 5 | 1, 2, 4 | 3eqtri 2790 | 1 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2147 {crab 3416 Vcvv 3454 ↦ cmpt 5192 ◡ccnv 5657 dom cdm 5658 ran crn 5659 “ cima 5661 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-pr 5398 |
| 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-br 5109 df-opab 5174 df-mpt 5193 df-xp 5664 df-rel 5665 df-cnv 5666 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 |
| This theorem is used by: dmmptss 6261 dmmptg 6262 dmmptd 6714 fvmpti 7023 funcnvmpt 7026 fvmptss 7037 fvmptss2 7051 mptexgf 7259 tz9.12lem3 9833 cardf2 10061 pmtrsn 19784 00lsp 21307 rgrx0ndm 30231 abrexexd 33204 mptctf 33405 issibf 35076 rdgprc0 36770 imageval 36907 dmmptdff 46509 dmmptssf 46517 dmmptdf2 46518 dvcosre 47195 itgsinexplem1 47237 stirlinglem14 47370 fvmptrabdm 48636 |
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