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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 2733 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6195 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3458 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3070 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3429 | . . 3 ⊢ (𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} ↔ ∀𝑥 ∈ 𝐴 𝐵 ∈ V) | |
| 6 | 4, 5 | sylibr 234 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → 𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V}) |
| 7 | 2, 6 | eqtr4id 2787 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 ∀wral 3048 {crab 3396 Vcvv 3437 ↦ cmpt 5176 dom cdm 5621 |
| 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 2705 ax-sep 5238 ax-nul 5248 ax-pr 5374 |
| 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 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ral 3049 df-rab 3397 df-v 3439 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-nul 4283 df-if 4477 df-sn 4578 df-pr 4580 df-op 4584 df-br 5096 df-opab 5158 df-mpt 5177 df-xp 5627 df-rel 5628 df-cnv 5629 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 |
| This theorem is referenced by: rnmpt0f 6198 ovmpt3rabdm 7614 suppssov1 8136 suppssov2 8137 suppssfv 8141 iinon 8269 onoviun 8272 noinfep 9561 cantnfdm 9565 axcc2lem 10338 negfi 12082 ccatalpha 14508 swrd0 14573 o1lo1 15451 o1lo12 15452 lo1mptrcl 15536 o1mptrcl 15537 o1add2 15538 o1mul2 15539 o1sub2 15540 lo1add 15541 lo1mul 15542 o1dif 15544 rlimneg 15561 lo1le 15566 rlimno1 15568 o1fsum 15727 divsfval 17459 subdrgint 20727 iscnp2 23174 ptcnplem 23556 xkoinjcn 23622 fbasrn 23819 prdsdsf 24302 ressprdsds 24306 mbfmptcl 25584 mbfdm2 25585 dvmptresicc 25864 dvmptcl 25910 dvmptadd 25911 dvmptmul 25912 dvmptres2 25913 dvmptcmul 25915 dvmptcj 25919 dvmptco 25923 rolle 25941 dvlip 25945 dvlipcn 25946 dvle 25959 dvivthlem1 25960 dvivth 25962 dvfsumle 25973 dvfsumleOLD 25974 dvfsumge 25975 dvmptrecl 25977 dvfsumlem2 25980 dvfsumlem2OLD 25981 pserdv 26386 logtayl 26616 relogbf 26748 rlimcxp 26931 o1cxp 26932 gsummpt2co 33059 psgnfzto1stlem 33110 measdivcstALTV 34310 probfinmeasbALTV 34514 probmeasb 34515 dstrvprob 34557 cvmsss2 35390 sdclem2 37855 3factsumint1 42187 dmmzp 42890 dvcosax 46086 dvnprodlem3 46108 itgcoscmulx 46129 stoweidlem27 46187 dirkeritg 46262 fourierdlem16 46283 fourierdlem21 46288 fourierdlem22 46289 fourierdlem39 46306 fourierdlem57 46323 fourierdlem58 46324 fourierdlem60 46326 fourierdlem61 46327 fourierdlem73 46339 fourierdlem83 46349 subsaliuncllem 46517 0ome 46689 hoi2toco 46767 elbigofrcl 48712 itcoval0mpt 48828 |
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