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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 2739 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6191 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3452 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3076 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3424 | . . 3 ⊢ (𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} ↔ ∀𝑥 ∈ 𝐴 𝐵 ∈ V) | |
| 6 | 4, 5 | sylibr 235 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → 𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V}) |
| 7 | 2, 6 | eqtr4id 2793 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 ∈ wcel 2119 ∀wral 3053 {crab 3391 Vcvv 3431 ↦ cmpt 5153 dom cdm 5618 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-pr 5362 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ral 3054 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-br 5073 df-opab 5135 df-mpt 5154 df-xp 5624 df-rel 5625 df-cnv 5626 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 |
| This theorem is referenced by: rnmpt0f 6194 ovmpt3rabdm 7615 suppssov1 8137 suppssov2 8138 suppssfv 8142 iinon 8270 onoviun 8273 noinfep 9572 cantnfdm 9576 axcc2lem 10349 negfi 12096 ccatalpha 14547 swrd0 14612 o1lo1 15490 o1lo12 15491 lo1mptrcl 15575 o1mptrcl 15576 o1add2 15577 o1mul2 15578 o1sub2 15579 lo1add 15580 lo1mul 15581 o1dif 15583 rlimneg 15600 lo1le 15605 rlimno1 15607 o1fsum 15767 divsfval 17502 subdrgint 20775 iscnp2 23222 ptcnplem 23604 xkoinjcn 23670 fbasrn 23867 prdsdsf 24350 ressprdsds 24354 mbfmptcl 25621 mbfdm2 25622 dvmptresicc 25901 dvmptcl 25944 dvmptadd 25945 dvmptmul 25946 dvmptres2 25947 dvmptcmul 25949 dvmptcj 25953 dvmptco 25957 rolle 25975 dvlip 25978 dvlipcn 25979 dvle 25992 dvivthlem1 25993 dvivth 25995 dvfsumle 26006 dvfsumge 26007 dvmptrecl 26009 dvfsumlem2 26012 pserdv 26412 logtayl 26642 relogbf 26773 rlimcxp 26955 o1cxp 26956 gsummpt2co 33129 psgnfzto1stlem 33181 measdivcstALTV 34409 probfinmeasbALTV 34613 probmeasb 34614 dstrvprob 34656 cvmsss2 35502 sdclem2 38109 3factsumint1 42506 dmmzp 43182 dvcosax 46369 dvnprodlem3 46391 itgcoscmulx 46412 stoweidlem27 46470 dirkeritg 46545 fourierdlem16 46566 fourierdlem21 46571 fourierdlem22 46572 fourierdlem39 46589 fourierdlem57 46606 fourierdlem58 46607 fourierdlem60 46609 fourierdlem61 46610 fourierdlem73 46622 fourierdlem83 46632 subsaliuncllem 46800 0ome 46972 hoi2toco 47050 elbigofrcl 49041 itcoval0mpt 49157 |
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