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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 6356 | . 2 ⊢ Fun I | |
2 | ididg 5688 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 I 𝐴) | |
3 | funbrfv 6691 | . 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 1538 ∈ wcel 2111 class class class wbr 5030 I cid 5424 Fun wfun 6318 ‘cfv 6324 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ral 3111 df-rex 3112 df-v 3443 df-sbc 3721 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-opab 5093 df-id 5425 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-iota 6283 df-fun 6326 df-fv 6332 |
This theorem is referenced by: fviss 6716 fvmpti 6744 fvmpt2 6756 fvresi 6912 seqom0g 8075 fodomfi 8781 seqfeq4 13415 fac1 13633 facp1 13634 bcval5 13674 bcn2 13675 ids1 13942 s1val 13943 climshft2 14931 sum2id 15057 sumss 15073 prod2id 15274 fprodfac 15319 strfvi 16529 grpinvfvi 18138 mulgfvi 18222 efgrcl 18833 efgval 18835 frgp0 18878 frgpmhm 18883 vrgpf 18886 vrgpinv 18887 frgpupf 18891 frgpup1 18893 frgpup2 18894 frgpup3lem 18895 frgpnabllem1 18986 frgpnabllem2 18987 rlmsca2 19966 ply1basfvi 20870 ply1plusgfvi 20871 psr1sca2 20880 ply1sca2 20883 ply1scl0 20919 ply1scl1 20921 indislem 21605 2ndcctbss 22060 1stcelcls 22066 txindislem 22238 iscau3 23882 iscmet3 23897 ovolctb 24094 itg2splitlem 24352 deg1fvi 24686 deg1invg 24707 dgrle 24840 logfac 25192 fnpreimac 30434 ptpconn 32593 dicvscacl 38487 elinlem 40298 brfvid 40388 fvilbd 40390 |
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