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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 6387 | . 2 ⊢ Fun I | |
2 | ididg 5724 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐴 I 𝐴) | |
3 | funbrfv 6716 | . 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 1537 ∈ wcel 2114 class class class wbr 5066 I cid 5459 Fun wfun 6349 ‘cfv 6355 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 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 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-iota 6314 df-fun 6357 df-fv 6363 |
This theorem is referenced by: fviss 6741 fvmpti 6767 fvmpt2 6779 fvresi 6935 seqom0g 8092 fodomfi 8797 seqfeq4 13420 fac1 13638 facp1 13639 bcval5 13679 bcn2 13680 ids1 13951 s1val 13952 climshft2 14939 sum2id 15065 sumss 15081 prod2id 15282 fprodfac 15327 strfvi 16537 grpinvfvi 18146 mulgfvi 18230 efgrcl 18841 efgval 18843 frgp0 18886 frgpmhm 18891 vrgpf 18894 vrgpinv 18895 frgpupf 18899 frgpup1 18901 frgpup2 18902 frgpup3lem 18903 frgpnabllem1 18993 frgpnabllem2 18994 rlmsca2 19973 ply1basfvi 20409 ply1plusgfvi 20410 psr1sca2 20419 ply1sca2 20422 ply1scl0 20458 ply1scl1 20460 indislem 21608 2ndcctbss 22063 1stcelcls 22069 txindislem 22241 iscau3 23881 iscmet3 23896 ovolctb 24091 itg2splitlem 24349 deg1fvi 24679 deg1invg 24700 dgrle 24833 logfac 25184 fnpreimac 30416 ptpconn 32480 dicvscacl 38342 elinlem 39978 brfvid 40052 fvilbd 40054 |
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