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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 2760 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6243 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3471 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3099 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3444 | . . 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 2814 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 ∀wral 3076 {crab 3412 Vcvv 3450 ↦ cmpt 5185 dom cdm 5650 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ral 3077 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-br 5103 df-opab 5167 df-mpt 5186 df-xp 5656 df-rel 5657 df-cnv 5658 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 |
| This theorem is used by: rnmpt0f 6246 ovmpt3rabdm 7682 suppssov1 8219 suppssov2 8220 suppssfv 8224 iinon 8353 onoviun 8356 noinfep 9666 cantnfdm 9670 axcc2lem 10519 negfi 12271 ccatalpha 14745 swrd0 14814 o1lo1 15711 o1lo12 15712 lo1mptrcl 15796 o1mptrcl 15797 o1add2 15798 o1mul2 15799 o1sub2 15800 lo1add 15801 lo1mul 15802 o1dif 15804 rlimneg 15821 lo1le 15826 rlimno1 15828 o1fsum 15987 divsfval 17726 subdrgint 21067 iscnp2 23564 ptcnplem 23947 xkoinjcn 24013 fbasrn 24210 prdsdsf 24693 ressprdsds 24697 mbfmptcl 25964 mbfdm2 25965 dvmptresicc 26243 dvmptcl 26286 dvmptadd 26287 dvmptmul 26288 dvmptres2 26289 dvmptcmul 26291 dvmptcj 26295 dvmptco 26299 rolle 26317 dvlip 26320 dvlipcn 26321 dvle 26334 dvivthlem1 26335 dvivth 26337 dvfsumle 26348 dvfsumge 26349 dvmptrecl 26351 dvfsumlem2 26354 pserdv 26763 logtayl 26995 relogbf 27126 rlimcxp 27308 o1cxp 27309 gsummpt2co 33657 psgnfzto1stlem 33709 measdivcstALTV 34906 probfinmeasbALTV 35109 probmeasb 35110 dstrvprob 35152 cvmsss2 36127 sdclem2 38783 3factsumint1 43178 dmmzp 43851 dvcosax 47043 dvnprodlem3 47065 itgcoscmulx 47086 stoweidlem27 47144 dirkeritg 47219 fourierdlem16 47240 fourierdlem21 47245 fourierdlem22 47246 fourierdlem39 47263 fourierdlem57 47280 fourierdlem58 47281 fourierdlem60 47283 fourierdlem61 47284 fourierdlem73 47296 fourierdlem83 47306 subsaliuncllem 47474 0ome 47646 hoi2toco 47724 tmachlem-agreefin 48065 elbigofrcl 49769 itcoval0mpt 49885 |
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