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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 6204 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3450 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3074 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3422 | . . 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 1542 ∈ wcel 2114 ∀wral 3051 {crab 3389 Vcvv 3429 ↦ cmpt 5166 dom cdm 5631 |
| 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 2708 ax-sep 5231 ax-pr 5375 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ral 3052 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-br 5086 df-opab 5148 df-mpt 5167 df-xp 5637 df-rel 5638 df-cnv 5639 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 |
| This theorem is referenced by: rnmpt0f 6207 ovmpt3rabdm 7626 suppssov1 8147 suppssov2 8148 suppssfv 8152 iinon 8280 onoviun 8283 noinfep 9581 cantnfdm 9585 axcc2lem 10358 negfi 12105 ccatalpha 14556 swrd0 14621 o1lo1 15499 o1lo12 15500 lo1mptrcl 15584 o1mptrcl 15585 o1add2 15586 o1mul2 15587 o1sub2 15588 lo1add 15589 lo1mul 15590 o1dif 15592 rlimneg 15609 lo1le 15614 rlimno1 15616 o1fsum 15776 divsfval 17511 subdrgint 20780 iscnp2 23204 ptcnplem 23586 xkoinjcn 23652 fbasrn 23849 prdsdsf 24332 ressprdsds 24336 mbfmptcl 25603 mbfdm2 25604 dvmptresicc 25883 dvmptcl 25926 dvmptadd 25927 dvmptmul 25928 dvmptres2 25929 dvmptcmul 25931 dvmptcj 25935 dvmptco 25939 rolle 25957 dvlip 25960 dvlipcn 25961 dvle 25974 dvivthlem1 25975 dvivth 25977 dvfsumle 25988 dvfsumge 25989 dvmptrecl 25991 dvfsumlem2 25994 pserdv 26394 logtayl 26624 relogbf 26755 rlimcxp 26937 o1cxp 26938 gsummpt2co 33109 psgnfzto1stlem 33161 measdivcstALTV 34369 probfinmeasbALTV 34573 probmeasb 34574 dstrvprob 34616 cvmsss2 35456 sdclem2 38063 3factsumint1 42460 dmmzp 43165 dvcosax 46354 dvnprodlem3 46376 itgcoscmulx 46397 stoweidlem27 46455 dirkeritg 46530 fourierdlem16 46551 fourierdlem21 46556 fourierdlem22 46557 fourierdlem39 46574 fourierdlem57 46591 fourierdlem58 46592 fourierdlem60 46594 fourierdlem61 46595 fourierdlem73 46607 fourierdlem83 46617 subsaliuncllem 46785 0ome 46957 hoi2toco 47035 elbigofrcl 49026 itcoval0mpt 49142 |
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