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| 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 2763 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6241 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3476 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3102 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3449 | . . 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 2817 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 ∀wral 3079 {crab 3416 Vcvv 3455 ↦ cmpt 5192 dom cdm 5661 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-pr 5404 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ral 3080 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-br 5110 df-opab 5174 df-mpt 5193 df-xp 5667 df-rel 5668 df-cnv 5669 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 |
| This theorem is referenced by: rnmpt0f 6244 ovmpt3rabdm 7669 suppssov1 8189 suppssov2 8190 suppssfv 8194 iinon 8323 onoviun 8326 noinfep 9625 cantnfdm 9629 axcc2lem 10415 negfi 12159 ccatalpha 14627 swrd0 14692 o1lo1 15584 o1lo12 15585 lo1mptrcl 15669 o1mptrcl 15670 o1add2 15671 o1mul2 15672 o1sub2 15673 lo1add 15674 lo1mul 15675 o1dif 15677 rlimneg 15694 lo1le 15699 rlimno1 15701 o1fsum 15861 divsfval 17596 subdrgint 20906 iscnp2 23396 ptcnplem 23778 xkoinjcn 23844 fbasrn 24041 prdsdsf 24524 ressprdsds 24528 mbfmptcl 25795 mbfdm2 25796 dvmptresicc 26075 dvmptcl 26118 dvmptadd 26119 dvmptmul 26120 dvmptres2 26121 dvmptcmul 26123 dvmptcj 26127 dvmptco 26131 rolle 26149 dvlip 26152 dvlipcn 26153 dvle 26166 dvivthlem1 26167 dvivth 26169 dvfsumle 26180 dvfsumge 26181 dvmptrecl 26183 dvfsumlem2 26186 pserdv 26592 logtayl 26825 relogbf 26956 rlimcxp 27138 o1cxp 27139 gsummpt2co 33368 psgnfzto1stlem 33420 measdivcstALTV 34615 probfinmeasbALTV 34819 probmeasb 34820 dstrvprob 34862 cvmsss2 35766 sdclem2 38393 3factsumint1 42788 dmmzp 43464 dvcosax 46640 dvnprodlem3 46662 itgcoscmulx 46683 stoweidlem27 46741 dirkeritg 46816 fourierdlem16 46837 fourierdlem21 46842 fourierdlem22 46843 fourierdlem39 46860 fourierdlem57 46877 fourierdlem58 46878 fourierdlem60 46880 fourierdlem61 46881 fourierdlem73 46893 fourierdlem83 46903 subsaliuncllem 47071 0ome 47243 hoi2toco 47321 elbigofrcl 49330 itcoval0mpt 49446 |
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