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| Mirrors > Home > MPE Home > Th. List > fvi | Structured version Visualization version GIF version | ||
| Description: The value of the identity function. (Contributed by NM, 1-May-2004.) (Revised by Mario Carneiro, 28-Apr-2015.) |
| Ref | Expression |
|---|---|
| fvi | ⊢ (𝐴 ∈ 𝑉 → ( I ‘𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funi 6532 | . 2 ⊢ Fun I | |
| 2 | ididg 5810 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 I 𝐴) | |
| 3 | funbrfv 6890 | . 2 ⊢ (Fun I → (𝐴 I 𝐴 → ( I ‘𝐴) = 𝐴)) | |
| 4 | 1, 2, 3 | mpsyl 68 | 1 ⊢ (𝐴 ∈ 𝑉 → ( I ‘𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 class class class wbr 5100 I cid 5526 Fun wfun 6494 ‘cfv 6500 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-pr 5379 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-iota 6456 df-fun 6502 df-fv 6508 |
| This theorem is referenced by: fviss 6919 fvmpti 6948 fvmpt2 6961 fvresi 7129 seqom0g 8397 fodomfi 9224 fodomfiOLD 9242 seqfeq4 13986 fac1 14212 facp1 14213 bcval5 14253 bcn2 14254 ids1 14533 s1val 14534 climshft2 15517 sum2id 15643 sumss 15659 prod2id 15863 fprodfac 15908 strfvi 17129 grpinvfvi 18924 mulgfvi 19015 efgrcl 19656 efgval 19658 frgp0 19701 frgpmhm 19706 vrgpf 19709 vrgpinv 19710 frgpupf 19714 frgpup1 19716 frgpup2 19717 frgpup3lem 19718 frgpnabllem1 19814 frgpnabllem2 19815 rlmsca2 21163 ply1basfvi 22193 ply1plusgfvi 22194 psr1sca2 22203 ply1sca2 22206 ply1scl0OLD 22245 ply1scl1OLD 22248 indislem 22956 2ndcctbss 23411 1stcelcls 23417 txindislem 23589 iscau3 25246 iscmet3 25261 ovolctb 25459 itg2splitlem 25717 deg1fvi 26058 deg1invg 26079 dgrle 26216 logfac 26578 fnpreimac 32759 ptpconn 35446 dicvscacl 41564 elinlem 43951 brfvid 44040 fvilbd 44042 nregmodelf1o 45368 cjnpoly 47246 tposid 49241 tposidres 49242 |
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