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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 6570 | . 2 ⊢ Fun I | |
| 2 | resiexd.b | . 2 ⊢ (𝜑 → 𝐵 ∈ 𝑉) | |
| 3 | resfunexg 7215 | . 2 ⊢ ((Fun I ∧ 𝐵 ∈ 𝑉) → ( I ↾ 𝐵) ∈ V) | |
| 4 | 1, 2, 3 | sylancr 598 | 1 ⊢ (𝜑 → ( I ↾ 𝐵) ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2143 Vcvv 3455 I cid 5557 ↾ cres 5665 Fun wfun 6532 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 |
| This theorem is referenced by: setcid 18144 estrcid 18191 funcestrcsetclem5 18201 funcsetcestrclem5 18216 funcrngcsetc 20726 funcrngcsetcALT 20727 funcringcsetc 20760 cusgrsize 29782 fzo0pmtrlast 33390 tocycfv 33407 tocycf 33415 lindspropd 33674 rclexi 44321 cnvrcl0 44331 dfrtrcl5 44335 relexp01min 44419 fundcmpsurbijinjpreimafv 48133 fundcmpsurinjALT 48138 ushggricedg 48669 stgrvtx 48696 stgriedg 48697 grlicref 48754 gpgvtx 48785 gpgiedg 48786 uspgrsprfo 48890 rhmsubcALTVlem3 49025 funcringcsetcALTV2lem4 49035 funcringcsetcALTV2lem5 49036 funcringcsetclem4ALTV 49058 funcringcsetclem5ALTV 49059 itcoval0 49419 itcoval1 49420 |
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