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Mirrors > Home > MPE Home > Th. List > fnresi | Structured version Visualization version GIF version |
Description: Functionality and domain of restricted identity. (Contributed by NM, 27-Aug-2004.) |
Ref | Expression |
---|---|
fnresi | ⊢ ( I ↾ 𝐴) Fn 𝐴 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | funi 6167 | . . 3 ⊢ Fun I | |
2 | funres 6177 | . . 3 ⊢ (Fun I → Fun ( I ↾ 𝐴)) | |
3 | 1, 2 | ax-mp 5 | . 2 ⊢ Fun ( I ↾ 𝐴) |
4 | dmresi 5713 | . 2 ⊢ dom ( I ↾ 𝐴) = 𝐴 | |
5 | df-fn 6138 | . 2 ⊢ (( I ↾ 𝐴) Fn 𝐴 ↔ (Fun ( I ↾ 𝐴) ∧ dom ( I ↾ 𝐴) = 𝐴)) | |
6 | 3, 4, 5 | mpbir2an 701 | 1 ⊢ ( I ↾ 𝐴) Fn 𝐴 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1601 I cid 5260 dom cdm 5355 ↾ cres 5357 Fun wfun 6129 Fn wfn 6130 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1839 ax-4 1853 ax-5 1953 ax-6 2021 ax-7 2055 ax-9 2116 ax-10 2135 ax-11 2150 ax-12 2163 ax-13 2334 ax-ext 2754 ax-sep 5017 ax-nul 5025 ax-pr 5138 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 837 df-3an 1073 df-tru 1605 df-ex 1824 df-nf 1828 df-sb 2012 df-mo 2551 df-eu 2587 df-clab 2764 df-cleq 2770 df-clel 2774 df-nfc 2921 df-ral 3095 df-rex 3096 df-rab 3099 df-v 3400 df-dif 3795 df-un 3797 df-in 3799 df-ss 3806 df-nul 4142 df-if 4308 df-sn 4399 df-pr 4401 df-op 4405 df-br 4887 df-opab 4949 df-id 5261 df-xp 5361 df-rel 5362 df-cnv 5363 df-co 5364 df-dm 5365 df-res 5367 df-fun 6137 df-fn 6138 |
This theorem is referenced by: idssxpOLD 6255 f1oi 6428 fninfp 6707 fndifnfp 6709 fnnfpeq0 6711 fveqf1o 6829 weniso 6876 iordsmo 7737 fipreima 8560 dfac9 9293 pmtrfinv 18264 ustuqtop3 22455 fta1blem 24365 qaa 24515 dfiop2 29184 cvmliftlem4 31869 cvmliftlem5 31870 poimirlem15 34050 poimirlem22 34057 ltrnid 36289 rtrclex 38881 dvsid 39486 dflinc2 43214 |
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