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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 6524 | . 2 ⊢ Fun I | |
| 2 | ididg 5802 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 I 𝐴) | |
| 3 | funbrfv 6882 | . 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 5086 I cid 5518 Fun wfun 6486 ‘cfv 6492 |
| 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 5231 ax-pr 5370 |
| 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 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-iota 6448 df-fun 6494 df-fv 6500 |
| This theorem is referenced by: fviss 6911 fvmpti 6940 fvmpt2 6953 fvresi 7121 seqom0g 8388 fodomfi 9215 fodomfiOLD 9233 seqfeq4 14004 fac1 14230 facp1 14231 bcval5 14271 bcn2 14272 ids1 14551 s1val 14552 climshft2 15535 sum2id 15661 sumss 15677 prod2id 15884 fprodfac 15929 strfvi 17151 grpinvfvi 18949 mulgfvi 19040 efgrcl 19681 efgval 19683 frgp0 19726 frgpmhm 19731 vrgpf 19734 vrgpinv 19735 frgpupf 19739 frgpup1 19741 frgpup2 19742 frgpup3lem 19743 frgpnabllem1 19839 frgpnabllem2 19840 rlmsca2 21186 ply1basfvi 22214 ply1plusgfvi 22215 psr1sca2 22224 ply1sca2 22227 indislem 22975 2ndcctbss 23430 1stcelcls 23436 txindislem 23608 iscau3 25255 iscmet3 25270 ovolctb 25467 itg2splitlem 25725 deg1fvi 26060 deg1invg 26081 dgrle 26218 logfac 26578 fnpreimac 32758 ptpconn 35431 dicvscacl 41651 elinlem 44043 brfvid 44132 fvilbd 44134 nregmodelf1o 45460 cjnpoly 47349 tposid 49372 tposidres 49373 |
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