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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 6564 | . 2 ⊢ Fun I | |
| 2 | resiexd.b | . 2 ⊢ (𝜑 → 𝐵 ∈ 𝑉) | |
| 3 | resfunexg 7213 | . 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 2145 Vcvv 3451 I cid 5545 ↾ cres 5653 Fun wfun 6525 |
| 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-rep 5232 ax-sep 5249 ax-nul 5260 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-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 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-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 |
| This theorem is used by: setcid 18241 estrcid 18288 funcestrcsetclem5 18298 funcsetcestrclem5 18313 funcrngcsetc 20872 funcrngcsetcALT 20873 funcringcsetc 20906 cusgrsize 30017 fzo0pmtrlast 33635 tocycfv 33652 tocycf 33660 lindspropd 33920 rclexi 44574 cnvrcl0 44584 dfrtrcl5 44588 relexp01min 44672 fundcmpsurbijinjpreimafv 48433 fundcmpsurinjALT 48438 ushggricedg 48969 stgrvtx 48996 stgriedg 48997 grlicref 49054 gpgvtx 49085 gpgiedg 49086 uspgrsprfo 49190 rhmsubcALTVlem3 49324 funcringcsetcALTV2lem4 49334 funcringcsetcALTV2lem5 49335 funcringcsetclem4ALTV 49357 funcringcsetclem5ALTV 49358 itcoval0 49718 itcoval1 49719 |
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