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| Mirrors > Home > MPE Home > Th. List > resiexd | Structured version Visualization version GIF version | ||
| Description: The restriction of the identity relation to a set is a set. (Contributed by AV, 15-Feb-2020.) |
| Ref | Expression |
|---|---|
| resiexd.b | ⊢ (𝜑 → 𝐵 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| resiexd | ⊢ (𝜑 → ( I ↾ 𝐵) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funi 6573 | . 2 ⊢ Fun I | |
| 2 | resiexd.b | . 2 ⊢ (𝜑 → 𝐵 ∈ 𝑉) | |
| 3 | resfunexg 7222 | . 2 ⊢ ((Fun I ∧ 𝐵 ∈ 𝑉) → ( I ↾ 𝐵) ∈ V) | |
| 4 | 1, 2, 3 | sylancr 599 | 1 ⊢ (𝜑 → ( I ↾ 𝐵) ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 Vcvv 3450 I cid 5544 ↾ cres 5652 Fun wfun 6533 |
| 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-rep 5231 ax-sep 5248 ax-nul 5259 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-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 |
| This theorem is used by: setcid 18267 estrcid 18314 funcestrcsetclem5 18324 funcsetcestrclem5 18339 funcrngcsetc 20898 funcrngcsetcALT 20899 funcringcsetc 20932 cusgrsize 30041 fzo0pmtrlast 33700 tocycfv 33717 tocycf 33725 lindspropd 33985 rclexi 44709 cnvrcl0 44719 dfrtrcl5 44723 relexp01min 44807 fundcmpsurbijinjpreimafv 48583 fundcmpsurinjALT 48588 ushggricedg 49119 stgrvtx 49146 stgriedg 49147 grlicref 49204 gpgvtx 49235 gpgiedg 49236 uspgrsprfo 49340 rhmsubcALTVlem3 49474 funcringcsetcALTV2lem4 49484 funcringcsetcALTV2lem5 49485 funcringcsetclem4ALTV 49507 funcringcsetclem5ALTV 49508 itcoval0 49868 itcoval1 49869 |
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