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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 5834 | . 2 ⊢ Fun I | |
2 | ididg 5197 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 I 𝐴) | |
3 | funbrfv 6144 | . 2 ⊢ (Fun I → (𝐴 I 𝐴 → ( I ‘𝐴) = 𝐴)) | |
4 | 1, 2, 3 | mpsyl 66 | 1 ⊢ (𝐴 ∈ 𝑉 → ( I ‘𝐴) = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1475 ∈ wcel 1977 class class class wbr 4583 I cid 4948 Fun wfun 5798 ‘cfv 5804 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pr 4833 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-iota 5768 df-fun 5806 df-fv 5812 |
This theorem is referenced by: fviss 6166 fvmpti 6190 fvmpt2 6200 fvresi 6344 seqom0g 7438 fodomfi 8124 seqfeq4 12712 fac1 12926 facp1 12927 bcval5 12967 bcn2 12968 ids1 13230 s1val 13231 climshft2 14161 sum2id 14286 sumss 14302 prod2id 14497 fprodfac 14542 strfvi 15741 xpsc0 16043 xpsc1 16044 grpinvfvi 17286 mulgfvi 17368 efgrcl 17951 efgval 17953 frgp0 17996 frgpmhm 18001 vrgpf 18004 vrgpinv 18005 frgpupf 18009 frgpup1 18011 frgpup2 18012 frgpup3lem 18013 frgpnabllem1 18099 frgpnabllem2 18100 rlmsca2 19022 ply1basfvi 19432 ply1plusgfvi 19433 psr1sca2 19442 ply1sca2 19445 ply1scl0 19481 ply1scl1 19483 indislem 20614 2ndcctbss 21068 1stcelcls 21074 txindislem 21246 iscau3 22884 iscmet3 22899 ovolctb 23065 itg2splitlem 23321 deg1fvi 23649 deg1invg 23670 dgrle 23803 logfac 24151 ptpcon 30469 dicvscacl 35498 elinlem 36923 brfvid 36998 fvilbd 37000 |
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