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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 2737 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6198 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3451 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3075 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3423 | . . 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 2791 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ∀wral 3052 {crab 3390 Vcvv 3430 ↦ cmpt 5167 dom cdm 5624 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-pr 5370 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ral 3053 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-br 5087 df-opab 5149 df-mpt 5168 df-xp 5630 df-rel 5631 df-cnv 5632 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 |
| This theorem is referenced by: rnmpt0f 6201 ovmpt3rabdm 7619 suppssov1 8140 suppssov2 8141 suppssfv 8145 iinon 8273 onoviun 8276 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 20771 iscnp2 23214 ptcnplem 23596 xkoinjcn 23662 fbasrn 23859 prdsdsf 24342 ressprdsds 24346 mbfmptcl 25613 mbfdm2 25614 dvmptresicc 25893 dvmptcl 25936 dvmptadd 25937 dvmptmul 25938 dvmptres2 25939 dvmptcmul 25941 dvmptcj 25945 dvmptco 25949 rolle 25967 dvlip 25970 dvlipcn 25971 dvle 25984 dvivthlem1 25985 dvivth 25987 dvfsumle 25998 dvfsumge 25999 dvmptrecl 26001 dvfsumlem2 26004 pserdv 26407 logtayl 26637 relogbf 26768 rlimcxp 26951 o1cxp 26952 gsummpt2co 33124 psgnfzto1stlem 33176 measdivcstALTV 34385 probfinmeasbALTV 34589 probmeasb 34590 dstrvprob 34632 cvmsss2 35472 sdclem2 38077 3factsumint1 42474 dmmzp 43179 dvcosax 46372 dvnprodlem3 46394 itgcoscmulx 46415 stoweidlem27 46473 dirkeritg 46548 fourierdlem16 46569 fourierdlem21 46574 fourierdlem22 46575 fourierdlem39 46592 fourierdlem57 46609 fourierdlem58 46610 fourierdlem60 46612 fourierdlem61 46613 fourierdlem73 46625 fourierdlem83 46635 subsaliuncllem 46803 0ome 46975 hoi2toco 47053 elbigofrcl 49038 itcoval0mpt 49154 |
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