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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 6386 | . 2 ⊢ Fun I | |
2 | ididg 5723 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 I 𝐴) | |
3 | funbrfv 6715 | . 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 1533 ∈ wcel 2110 class class class wbr 5065 I cid 5458 Fun wfun 6348 ‘cfv 6354 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5202 ax-nul 5209 ax-pr 5329 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3772 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4838 df-br 5066 df-opab 5128 df-id 5459 df-xp 5560 df-rel 5561 df-cnv 5562 df-co 5563 df-dm 5564 df-iota 6313 df-fun 6356 df-fv 6362 |
This theorem is referenced by: fviss 6740 fvmpti 6766 fvmpt2 6778 fvresi 6934 seqom0g 8091 fodomfi 8796 seqfeq4 13418 fac1 13636 facp1 13637 bcval5 13677 bcn2 13678 ids1 13950 s1val 13951 climshft2 14938 sum2id 15064 sumss 15080 prod2id 15281 fprodfac 15326 strfvi 16536 grpinvfvi 18145 mulgfvi 18229 efgrcl 18840 efgval 18842 frgp0 18885 frgpmhm 18890 vrgpf 18893 vrgpinv 18894 frgpupf 18898 frgpup1 18900 frgpup2 18901 frgpup3lem 18902 frgpnabllem1 18992 frgpnabllem2 18993 rlmsca2 19972 ply1basfvi 20408 ply1plusgfvi 20409 psr1sca2 20418 ply1sca2 20421 ply1scl0 20457 ply1scl1 20459 indislem 21607 2ndcctbss 22062 1stcelcls 22068 txindislem 22240 iscau3 23880 iscmet3 23895 ovolctb 24090 itg2splitlem 24348 deg1fvi 24678 deg1invg 24699 dgrle 24832 logfac 25183 fnpreimac 30415 ptpconn 32480 dicvscacl 38326 elinlem 39956 brfvid 40030 fvilbd 40032 |
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