| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 2763 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6260 | . 2 ⊢ dom (𝑥 ∈ 𝐴 ↦ 𝐵) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | elex 3475 | . . . 4 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 4 | 3 | ralimi 3103 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 5 | rabid2 3448 | . . 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 2817 | 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 2147 ∀wral 3080 {crab 3416 Vcvv 3454 ↦ cmpt 5192 dom cdm 5658 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-pr 5398 |
| 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ral 3081 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-br 5109 df-opab 5174 df-mpt 5193 df-xp 5664 df-rel 5665 df-cnv 5666 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 |
| This theorem is used by: rnmpt0f 6263 ovmpt3rabdm 7712 suppssov1 8252 suppssov2 8253 suppssfv 8257 iinon 8386 onoviun 8389 noinfep 9698 cantnfdm 9702 axcc2lem 10553 negfi 12306 ccatalpha 14781 swrd0 14850 o1lo1 15748 o1lo12 15749 lo1mptrcl 15833 o1mptrcl 15834 o1add2 15835 o1mul2 15836 o1sub2 15837 lo1add 15838 lo1mul 15839 o1dif 15841 rlimneg 15858 lo1le 15863 rlimno1 15865 o1fsum 16024 divsfval 17769 subdrgint 21111 iscnp2 23612 ptcnplem 23995 xkoinjcn 24061 fbasrn 24258 prdsdsf 24741 ressprdsds 24745 mbfmptcl 26012 mbfdm2 26013 dvmptresicc 26291 dvmptcl 26334 dvmptadd 26335 dvmptmul 26336 dvmptres2 26337 dvmptcmul 26339 dvmptcj 26343 dvmptco 26347 rolle 26365 dvlip 26368 dvlipcn 26369 dvle 26382 dvivthlem1 26383 dvivth 26385 dvfsumle 26396 dvfsumge 26397 dvmptrecl 26399 dvfsumlem2 26402 pserdv 26813 logtayl 27045 relogbf 27176 rlimcxp 27358 o1cxp 27359 gsummpt2co 33708 psgnfzto1stlem 33760 measdivcstALTV 34969 probfinmeasbALTV 35172 probmeasb 35173 dstrvprob 35215 cvmsss2 36247 sdclem2 38942 3factsumint1 43337 dmmzp 44010 dvcosax 47209 dvnprodlem3 47231 itgcoscmulx 47252 stoweidlem27 47310 dirkeritg 47385 fourierdlem16 47406 fourierdlem21 47411 fourierdlem22 47412 fourierdlem39 47429 fourierdlem57 47446 fourierdlem58 47447 fourierdlem60 47449 fourierdlem61 47450 fourierdlem73 47462 fourierdlem83 47472 subsaliuncllem 47640 0ome 47812 hoi2toco 47890 tmachlem-agreefin 48231 elbigofrcl 49993 itcoval0mpt 50109 |
| Copyright terms: Public domain | W3C validator |