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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 5859 | . 2 ⊢ dom 𝐹 = ran ◡𝐹 | |
| 2 | dfrn4 6175 | . 2 ⊢ ran ◡𝐹 = (◡𝐹 “ V) | |
| 3 | dmmpt.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 4 | 3 | mptpreima 6211 | . 2 ⊢ (◡𝐹 “ V) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 5 | 1, 2, 4 | 3eqtri 2756 | 1 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 {crab 3405 Vcvv 3447 ↦ cmpt 5188 ◡ccnv 5637 dom cdm 5638 ran crn 5639 “ cima 5641 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pr 5387 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-rab 3406 df-v 3449 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-nul 4297 df-if 4489 df-sn 4590 df-pr 4592 df-op 4596 df-br 5108 df-opab 5170 df-mpt 5189 df-xp 5644 df-rel 5645 df-cnv 5646 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 |
| This theorem is referenced by: dmmptss 6214 dmmptg 6215 dmmptd 6663 fvmpti 6967 fvmptss 6980 fvmptss2 6994 mptexgf 7196 tz9.12lem3 9742 cardf2 9896 pmtrsn 19449 00lsp 20887 rgrx0ndm 29521 abrexexd 32438 funcnvmpt 32591 mptctf 32641 issibf 34324 rdgprc0 35781 imageval 35918 dmmptdff 45217 dmmptssf 45226 dmmptdf2 45227 dvcosre 45910 itgsinexplem1 45952 stirlinglem14 46085 fvmptrabdm 47294 |
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