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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 | elex 3514 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
2 | 1 | ralimi 3162 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
3 | rabid2 3383 | . . 3 ⊢ (𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} ↔ ∀𝑥 ∈ 𝐴 𝐵 ∈ V) | |
4 | 2, 3 | sylibr 236 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → 𝐴 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V}) |
5 | eqid 2823 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
6 | 5 | dmmpt 6096 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
7 | 4, 6 | syl6reqr 2877 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → dom (𝑥 ∈ 𝐴 ↦ 𝐵) = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2114 ∀wral 3140 {crab 3144 Vcvv 3496 ↦ cmpt 5148 dom cdm 5557 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pr 5332 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ral 3145 df-rab 3149 df-v 3498 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-sn 4570 df-pr 4572 df-op 4576 df-br 5069 df-opab 5131 df-mpt 5149 df-xp 5563 df-rel 5564 df-cnv 5565 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 |
This theorem is referenced by: ovmpt3rabdm 7406 suppssov1 7864 suppssfv 7868 iinon 7979 onoviun 7982 noinfep 9125 cantnfdm 9129 axcc2lem 9860 negfi 11591 ccatalpha 13949 swrd0 14022 o1lo1 14896 o1lo12 14897 lo1mptrcl 14980 o1mptrcl 14981 o1add2 14982 o1mul2 14983 o1sub2 14984 lo1add 14985 lo1mul 14986 o1dif 14988 rlimneg 15005 lo1le 15010 rlimno1 15012 o1fsum 15170 divsfval 16822 subdrgint 19584 iscnp2 21849 ptcnplem 22231 xkoinjcn 22297 fbasrn 22494 prdsdsf 22979 ressprdsds 22983 mbfmptcl 24239 mbfdm2 24240 dvmptcl 24558 dvmptadd 24559 dvmptmul 24560 dvmptres2 24561 dvmptcmul 24563 dvmptcj 24567 dvmptco 24571 rolle 24589 dvlip 24592 dvlipcn 24593 dvle 24606 dvivthlem1 24607 dvivth 24609 dvfsumle 24620 dvfsumge 24621 dvmptrecl 24623 dvfsumlem2 24626 pserdv 25019 logtayl 25245 relogbf 25371 rlimcxp 25553 o1cxp 25554 gsummpt2co 30688 psgnfzto1stlem 30744 measdivcstALTV 31486 probfinmeasbALTV 31689 probmeasb 31690 dstrvprob 31731 cvmsss2 32523 sdclem2 35019 dmmzp 39337 rnmpt0 41490 dvmptresicc 42211 dvcosax 42218 dvnprodlem3 42240 itgcoscmulx 42261 stoweidlem27 42319 dirkeritg 42394 fourierdlem16 42415 fourierdlem21 42420 fourierdlem22 42421 fourierdlem39 42438 fourierdlem57 42455 fourierdlem58 42456 fourierdlem60 42458 fourierdlem61 42459 fourierdlem73 42471 fourierdlem83 42481 subsaliuncllem 42647 0ome 42818 hoi2toco 42896 elbigofrcl 44617 |
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