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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 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 8193 suppssov2 8194 suppssfv 8198 iinon 8327 onoviun 8330 noinfep 9629 cantnfdm 9633 axcc2lem 10420 negfi 12164 ccatalpha 14631 swrd0 14696 o1lo1 15588 o1lo12 15589 lo1mptrcl 15673 o1mptrcl 15674 o1add2 15675 o1mul2 15676 o1sub2 15677 lo1add 15678 lo1mul 15679 o1dif 15681 rlimneg 15698 lo1le 15703 rlimno1 15705 o1fsum 15865 divsfval 17601 subdrgint 20884 iscnp2 23365 ptcnplem 23747 xkoinjcn 23813 fbasrn 24010 prdsdsf 24493 ressprdsds 24497 mbfmptcl 25764 mbfdm2 25765 dvmptresicc 26044 dvmptcl 26087 dvmptadd 26088 dvmptmul 26089 dvmptres2 26090 dvmptcmul 26092 dvmptcj 26096 dvmptco 26100 rolle 26118 dvlip 26121 dvlipcn 26122 dvle 26135 dvivthlem1 26136 dvivth 26138 dvfsumle 26149 dvfsumge 26150 dvmptrecl 26152 dvfsumlem2 26155 pserdv 26558 logtayl 26791 relogbf 26922 rlimcxp 27104 o1cxp 27105 gsummpt2co 33309 psgnfzto1stlem 33361 measdivcstALTV 34560 probfinmeasbALTV 34764 probmeasb 34765 dstrvprob 34807 cvmsss2 35699 sdclem2 38315 3factsumint1 42712 dmmzp 43390 dvcosax 46566 dvnprodlem3 46588 itgcoscmulx 46609 stoweidlem27 46667 dirkeritg 46742 fourierdlem16 46763 fourierdlem21 46768 fourierdlem22 46769 fourierdlem39 46786 fourierdlem57 46803 fourierdlem58 46804 fourierdlem60 46806 fourierdlem61 46807 fourierdlem73 46819 fourierdlem83 46829 subsaliuncllem 46997 0ome 47169 hoi2toco 47247 elbigofrcl 49249 itcoval0mpt 49365 |
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