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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 2762 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6227 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3475 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3099 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3447 | . . 3 ⊢ (𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} ↔ ∀𝑥 ∈ 𝐴 𝐵 ∈ V) | |
| 6 | 4, 5 | sylibr 236 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → 𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V}) |
| 7 | 2, 6 | eqtr4id 2816 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1560 ∈ wcel 2142 ∀wral 3076 {crab 3414 Vcvv 3454 ↦ cmpt 5181 dom cdm 5647 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-pr 5390 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ral 3077 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-sn 4583 df-pr 4585 df-op 4589 df-br 5101 df-opab 5163 df-mpt 5182 df-xp 5653 df-rel 5654 df-cnv 5655 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 |
| This theorem is referenced by: rnmpt0f 6230 ovmpt3rabdm 7655 suppssov1 8177 suppssov2 8178 suppssfv 8182 iinon 8311 onoviun 8314 noinfep 9615 cantnfdm 9619 axcc2lem 10393 negfi 12141 ccatalpha 14607 swrd0 14672 o1lo1 15564 o1lo12 15565 lo1mptrcl 15649 o1mptrcl 15650 o1add2 15651 o1mul2 15652 o1sub2 15653 lo1add 15654 lo1mul 15655 o1dif 15657 rlimneg 15674 lo1le 15679 rlimno1 15681 o1fsum 15841 divsfval 17577 subdrgint 20849 iscnp2 23296 ptcnplem 23678 xkoinjcn 23744 fbasrn 23941 prdsdsf 24424 ressprdsds 24428 mbfmptcl 25695 mbfdm2 25696 dvmptresicc 25975 dvmptcl 26018 dvmptadd 26019 dvmptmul 26020 dvmptres2 26021 dvmptcmul 26023 dvmptcj 26027 dvmptco 26031 rolle 26049 dvlip 26052 dvlipcn 26053 dvle 26066 dvivthlem1 26067 dvivth 26069 dvfsumle 26080 dvfsumge 26081 dvmptrecl 26083 dvfsumlem2 26086 pserdv 26489 logtayl 26722 relogbf 26853 rlimcxp 27035 o1cxp 27036 gsummpt2co 33225 psgnfzto1stlem 33277 measdivcstALTV 34519 probfinmeasbALTV 34723 probmeasb 34724 dstrvprob 34766 cvmsss2 35621 sdclem2 38238 3factsumint1 42635 dmmzp 43311 dvcosax 46497 dvnprodlem3 46519 itgcoscmulx 46540 stoweidlem27 46598 dirkeritg 46673 fourierdlem16 46694 fourierdlem21 46699 fourierdlem22 46700 fourierdlem39 46717 fourierdlem57 46734 fourierdlem58 46735 fourierdlem60 46737 fourierdlem61 46738 fourierdlem73 46750 fourierdlem83 46760 subsaliuncllem 46928 0ome 47100 hoi2toco 47178 elbigofrcl 49169 itcoval0mpt 49285 |
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