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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 5842 | . 2 ⊢ dom 𝐹 = ran ◡𝐹 | |
| 2 | dfrn4 6158 | . 2 ⊢ ran ◡𝐹 = (◡𝐹 “ V) | |
| 3 | dmmpt.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 4 | 3 | mptpreima 6194 | . 2 ⊢ (◡𝐹 “ V) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 5 | 1, 2, 4 | 3eqtri 2761 | 1 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ∈ wcel 2113 {crab 3397 Vcvv 3438 ↦ cmpt 5177 ◡ccnv 5621 dom cdm 5622 ran crn 5623 “ cima 5625 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pr 5375 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-sn 4579 df-pr 4581 df-op 4585 df-br 5097 df-opab 5159 df-mpt 5178 df-xp 5628 df-rel 5629 df-cnv 5630 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 |
| This theorem is referenced by: dmmptss 6197 dmmptg 6198 dmmptd 6635 fvmpti 6938 fvmptss 6951 fvmptss2 6965 mptexgf 7166 tz9.12lem3 9699 cardf2 9853 pmtrsn 19446 00lsp 20930 rgrx0ndm 29616 abrexexd 32533 funcnvmpt 32694 mptctf 32744 issibf 34439 rdgprc0 35934 imageval 36071 dmmptdff 45409 dmmptssf 45418 dmmptdf2 45419 dvcosre 46098 itgsinexplem1 46140 stirlinglem14 46273 fvmptrabdm 47481 |
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