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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 2798 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
2 | 1 | dmmpt 6061 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
3 | elex 3459 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
4 | 3 | ralimi 3128 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
5 | rabid2 3334 | . . 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 2852 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1538 ∈ wcel 2111 ∀wral 3106 {crab 3110 Vcvv 3441 ↦ cmpt 5110 dom cdm 5519 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ral 3111 df-rab 3115 df-v 3443 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-br 5031 df-opab 5093 df-mpt 5111 df-xp 5525 df-rel 5526 df-cnv 5527 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 |
This theorem is referenced by: ovmpt3rabdm 7384 suppssov1 7845 suppssfv 7849 iinon 7960 onoviun 7963 noinfep 9107 cantnfdm 9111 axcc2lem 9847 negfi 11577 ccatalpha 13938 swrd0 14011 o1lo1 14886 o1lo12 14887 lo1mptrcl 14970 o1mptrcl 14971 o1add2 14972 o1mul2 14973 o1sub2 14974 lo1add 14975 lo1mul 14976 o1dif 14978 rlimneg 14995 lo1le 15000 rlimno1 15002 o1fsum 15160 divsfval 16812 subdrgint 19575 iscnp2 21844 ptcnplem 22226 xkoinjcn 22292 fbasrn 22489 prdsdsf 22974 ressprdsds 22978 mbfmptcl 24240 mbfdm2 24241 dvmptresicc 24519 dvmptcl 24562 dvmptadd 24563 dvmptmul 24564 dvmptres2 24565 dvmptcmul 24567 dvmptcj 24571 dvmptco 24575 rolle 24593 dvlip 24596 dvlipcn 24597 dvle 24610 dvivthlem1 24611 dvivth 24613 dvfsumle 24624 dvfsumge 24625 dvmptrecl 24627 dvfsumlem2 24630 pserdv 25024 logtayl 25251 relogbf 25377 rlimcxp 25559 o1cxp 25560 gsummpt2co 30733 psgnfzto1stlem 30792 measdivcstALTV 31594 probfinmeasbALTV 31797 probmeasb 31798 dstrvprob 31839 cvmsss2 32634 sdclem2 35180 3factsumint1 39309 dmmzp 39674 rnmpt0 41849 dvcosax 42568 dvnprodlem3 42590 itgcoscmulx 42611 stoweidlem27 42669 dirkeritg 42744 fourierdlem16 42765 fourierdlem21 42770 fourierdlem22 42771 fourierdlem39 42788 fourierdlem57 42805 fourierdlem58 42806 fourierdlem60 42808 fourierdlem61 42809 fourierdlem73 42821 fourierdlem83 42831 subsaliuncllem 42997 0ome 43168 hoi2toco 43246 elbigofrcl 44964 itcoval0mpt 45080 |
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