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Related theorems Unicode version |
| Description: An onto mapping is a mapping. |
| Ref | Expression |
|---|---|
| fof |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqimss 2105 |
. . 3
| |
| 2 | 1 | anim2i 335 |
. 2
|
| 3 | df-fo 3191 |
. 2
| |
| 4 | df-f 3189 |
. 2
| |
| 5 | 2, 3, 4 | 3imtr4 219 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fofun 3664 dffo2 3666 foima 3667 fornex 3670 fodmrnu 3671 ffoss 3702 fo00 3706 fconst5 3839 fconstfv 3840 cbvfo 3876 canth 3898 2ndconst 4087 1stcof 4091 df1st2 4116 df2nd2 4117 mapsn 4335 ssdomg 4395 unfilem2 4531 fiint 4540 fodomfi 4546 fodomfib 4547 fodom 4778 fodomb 4780 alephiso 4872 ruclem39 7499 infmap2lem2 7530 grpcl 7994 grprndm 8004 grprn 8006 resgrprn 8045 resgrprnOLD 8046 subgres 8069 issubgi 8074 vcoprnelem 8149 vafval 8174 smfval 8176 0vfval 8177 nvgf 8189 vsfval 8206 pjft 9593 elunopt 9739 unopf1ot 9779 cnvunopt 9781 pjinvar 10057 ghomfo 10325 ghomcl 10326 ghomgsg 10329 ghomf1olem 10330 cayleylem3 10345 domval 10535 codval 10536 idval 10537 cmpval 10538 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-12 966 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-ex 979 df-sb 1170 df-clab 1462 df-cleq 1467 df-clel 1470 df-in 2047 df-ss 2049 df-f 3189 df-fo 3191 |