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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 2736 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6198 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3461 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3073 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3432 | . . 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 2790 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 ∀wral 3051 {crab 3399 Vcvv 3440 ↦ cmpt 5179 dom cdm 5624 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ral 3052 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-mpt 5180 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 7617 suppssov1 8139 suppssov2 8140 suppssfv 8144 iinon 8272 onoviun 8275 noinfep 9569 cantnfdm 9573 axcc2lem 10346 negfi 12091 ccatalpha 14517 swrd0 14582 o1lo1 15460 o1lo12 15461 lo1mptrcl 15545 o1mptrcl 15546 o1add2 15547 o1mul2 15548 o1sub2 15549 lo1add 15550 lo1mul 15551 o1dif 15553 rlimneg 15570 lo1le 15575 rlimno1 15577 o1fsum 15736 divsfval 17468 subdrgint 20736 iscnp2 23183 ptcnplem 23565 xkoinjcn 23631 fbasrn 23828 prdsdsf 24311 ressprdsds 24315 mbfmptcl 25593 mbfdm2 25594 dvmptresicc 25873 dvmptcl 25919 dvmptadd 25920 dvmptmul 25921 dvmptres2 25922 dvmptcmul 25924 dvmptcj 25928 dvmptco 25932 rolle 25950 dvlip 25954 dvlipcn 25955 dvle 25968 dvivthlem1 25969 dvivth 25971 dvfsumle 25982 dvfsumleOLD 25983 dvfsumge 25984 dvmptrecl 25986 dvfsumlem2 25989 dvfsumlem2OLD 25990 pserdv 26395 logtayl 26625 relogbf 26757 rlimcxp 26940 o1cxp 26941 gsummpt2co 33131 psgnfzto1stlem 33182 measdivcstALTV 34382 probfinmeasbALTV 34586 probmeasb 34587 dstrvprob 34629 cvmsss2 35468 sdclem2 37943 3factsumint1 42275 dmmzp 42975 dvcosax 46170 dvnprodlem3 46192 itgcoscmulx 46213 stoweidlem27 46271 dirkeritg 46346 fourierdlem16 46367 fourierdlem21 46372 fourierdlem22 46373 fourierdlem39 46390 fourierdlem57 46407 fourierdlem58 46408 fourierdlem60 46410 fourierdlem61 46411 fourierdlem73 46423 fourierdlem83 46433 subsaliuncllem 46601 0ome 46773 hoi2toco 46851 elbigofrcl 48796 itcoval0mpt 48912 |
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