| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > dmmptg | Structured version Visualization version GIF version | ||
| Description: The domain of the mapping operation is the stated domain, if the function value is always a set. (Contributed by Mario Carneiro, 9-Feb-2013.) (Revised by Mario Carneiro, 14-Sep-2013.) |
| Ref | Expression |
|---|---|
| dmmptg | ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2769 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6242 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3484 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3108 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3456 | . . 3 ⊢ (𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} ↔ ∀𝑥 ∈ 𝐴 𝐵 ∈ V) | |
| 6 | 4, 5 | sylibr 237 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → 𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V}) |
| 7 | 2, 6 | eqtr4id 2823 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1567 ∈ wcel 2149 ∀wral 3085 {crab 3423 Vcvv 3463 ↦ cmpt 5196 dom cdm 5662 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-pr 5405 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ral 3086 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-br 5114 df-opab 5178 df-mpt 5197 df-xp 5668 df-rel 5669 df-cnv 5670 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 |
| This theorem is referenced by: rnmpt0f 6245 ovmpt3rabdm 7670 suppssov1 8192 suppssov2 8193 suppssfv 8197 iinon 8326 onoviun 8329 noinfep 9628 cantnfdm 9632 axcc2lem 10419 negfi 12163 ccatalpha 14630 swrd0 14695 o1lo1 15587 o1lo12 15588 lo1mptrcl 15672 o1mptrcl 15673 o1add2 15674 o1mul2 15675 o1sub2 15676 lo1add 15677 lo1mul 15678 o1dif 15680 rlimneg 15697 lo1le 15702 rlimno1 15704 o1fsum 15864 divsfval 17600 subdrgint 20883 iscnp2 23364 ptcnplem 23746 xkoinjcn 23812 fbasrn 24009 prdsdsf 24492 ressprdsds 24496 mbfmptcl 25763 mbfdm2 25764 dvmptresicc 26043 dvmptcl 26086 dvmptadd 26087 dvmptmul 26088 dvmptres2 26089 dvmptcmul 26091 dvmptcj 26095 dvmptco 26099 rolle 26117 dvlip 26120 dvlipcn 26121 dvle 26134 dvivthlem1 26135 dvivth 26137 dvfsumle 26148 dvfsumge 26149 dvmptrecl 26151 dvfsumlem2 26154 pserdv 26557 logtayl 26790 relogbf 26921 rlimcxp 27103 o1cxp 27104 gsummpt2co 33308 psgnfzto1stlem 33360 measdivcstALTV 34559 probfinmeasbALTV 34763 probmeasb 34764 dstrvprob 34806 cvmsss2 35664 sdclem2 38280 3factsumint1 42677 dmmzp 43355 dvcosax 46531 dvnprodlem3 46553 itgcoscmulx 46574 stoweidlem27 46632 dirkeritg 46707 fourierdlem16 46728 fourierdlem21 46733 fourierdlem22 46734 fourierdlem39 46751 fourierdlem57 46768 fourierdlem58 46769 fourierdlem60 46771 fourierdlem61 46772 fourierdlem73 46784 fourierdlem83 46794 subsaliuncllem 46962 0ome 47134 hoi2toco 47212 elbigofrcl 49214 itcoval0mpt 49330 |
| Copyright terms: Public domain | W3C validator |