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Mirrors > Home > MPE Home > Th. List > dffo3 | Structured version Visualization version Unicode version |
Description: An onto mapping expressed in terms of function values. (Contributed by NM, 29-Oct-2006.) |
Ref | Expression |
---|---|
dffo3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dffo2 6119 | . 2 | |
2 | ffn 6045 | . . . . 5 | |
3 | fnrnfv 6242 | . . . . . 6 | |
4 | 3 | eqeq1d 2624 | . . . . 5 |
5 | 2, 4 | syl 17 | . . . 4 |
6 | simpr 477 | . . . . . . . . . . 11 | |
7 | ffvelrn 6357 | . . . . . . . . . . . 12 | |
8 | 7 | adantr 481 | . . . . . . . . . . 11 |
9 | 6, 8 | eqeltrd 2701 | . . . . . . . . . 10 |
10 | 9 | exp31 630 | . . . . . . . . 9 |
11 | 10 | rexlimdv 3030 | . . . . . . . 8 |
12 | 11 | biantrurd 529 | . . . . . . 7 |
13 | dfbi2 660 | . . . . . . 7 | |
14 | 12, 13 | syl6rbbr 279 | . . . . . 6 |
15 | 14 | albidv 1849 | . . . . 5 |
16 | abeq1 2733 | . . . . 5 | |
17 | df-ral 2917 | . . . . 5 | |
18 | 15, 16, 17 | 3bitr4g 303 | . . . 4 |
19 | 5, 18 | bitrd 268 | . . 3 |
20 | 19 | pm5.32i 669 | . 2 |
21 | 1, 20 | bitri 264 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wal 1481 wceq 1483 wcel 1990 cab 2608 wral 2912 wrex 2913 crn 5115 wfn 5883 wf 5884 wfo 5886 cfv 5888 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-fo 5894 df-fv 5896 |
This theorem is referenced by: dffo4 6375 foelrn 6378 foco2 6379 foco2OLD 6380 fcofo 6543 foov 6808 resixpfo 7946 fofinf1o 8241 wdom2d 8485 brwdom3 8487 isf32lem9 9183 hsmexlem2 9249 cnref1o 11827 wwlktovfo 13701 1arith 15631 fullestrcsetc 16791 fullsetcestrc 16806 orbsta 17746 symgextfo 17842 symgfixfo 17859 pwssplit1 19059 znf1o 19900 cygznlem3 19918 scmatfo 20336 m2cpmfo 20561 pm2mpfo 20619 recosf1o 24281 efif1olem4 24291 dvdsmulf1o 24920 wlkpwwlkf1ouspgr 26765 wlknwwlksnsur 26776 wlkwwlksur 26783 wwlksnextsur 26795 clwwlksfo 26918 clwlksfoclwwlk 26963 eucrctshift 27103 frgrncvvdeqlem9 27171 numclwlk1lem2fo 27228 subfacp1lem3 31164 cvmfolem 31261 finixpnum 33394 wessf1ornlem 39371 projf1o 39386 sumnnodd 39862 dvnprodlem1 40161 fourierdlem54 40377 nnfoctbdjlem 40672 isomenndlem 40744 sprsymrelfo 41747 uspgrsprfo 41756 |
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