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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 2761 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6240 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3472 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3100 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3445 | . . 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 2815 | 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 1570 ∈ wcel 2145 ∀wral 3077 {crab 3413 Vcvv 3451 ↦ cmpt 5186 dom cdm 5651 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-pr 5391 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ral 3078 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-opab 5168 df-mpt 5187 df-xp 5657 df-rel 5658 df-cnv 5659 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 |
| This theorem is used by: rnmpt0f 6243 ovmpt3rabdm 7678 suppssov1 8207 suppssov2 8208 suppssfv 8212 iinon 8341 onoviun 8344 noinfep 9654 cantnfdm 9658 axcc2lem 10507 negfi 12259 ccatalpha 14733 swrd0 14801 o1lo1 15697 o1lo12 15698 lo1mptrcl 15782 o1mptrcl 15783 o1add2 15784 o1mul2 15785 o1sub2 15786 lo1add 15787 lo1mul 15788 o1dif 15790 rlimneg 15807 lo1le 15812 rlimno1 15814 o1fsum 15973 divsfval 17712 subdrgint 21053 iscnp2 23550 ptcnplem 23933 xkoinjcn 23999 fbasrn 24196 prdsdsf 24679 ressprdsds 24683 mbfmptcl 25950 mbfdm2 25951 dvmptresicc 26229 dvmptcl 26272 dvmptadd 26273 dvmptmul 26274 dvmptres2 26275 dvmptcmul 26277 dvmptcj 26281 dvmptco 26285 rolle 26303 dvlip 26306 dvlipcn 26307 dvle 26320 dvivthlem1 26321 dvivth 26323 dvfsumle 26334 dvfsumge 26335 dvmptrecl 26337 dvfsumlem2 26340 pserdv 26749 logtayl 26981 relogbf 27112 rlimcxp 27294 o1cxp 27295 gsummpt2co 33602 psgnfzto1stlem 33654 measdivcstALTV 34851 probfinmeasbALTV 35054 probmeasb 35055 dstrvprob 35097 cvmsss2 36018 sdclem2 38656 3factsumint1 43051 dmmzp 43723 dvcosax 46905 dvnprodlem3 46927 itgcoscmulx 46948 stoweidlem27 47006 dirkeritg 47081 fourierdlem16 47102 fourierdlem21 47107 fourierdlem22 47108 fourierdlem39 47125 fourierdlem57 47142 fourierdlem58 47143 fourierdlem60 47145 fourierdlem61 47146 fourierdlem73 47158 fourierdlem83 47168 subsaliuncllem 47336 0ome 47508 hoi2toco 47586 tmachlem-agreefin 47927 elbigofrcl 49631 itcoval0mpt 49747 |
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