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| Mirrors > Home > ILE Home > Th. List > fof | Unicode version | ||
| Description: An onto mapping is a mapping. (Contributed by NM, 3-Aug-1994.) |
| Ref | Expression |
|---|---|
| fof |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqimss 3302 |
. . 3
| |
| 2 | 1 | anim2i 342 |
. 2
|
| 3 | df-fo 5383 |
. 2
| |
| 4 | df-f 5381 |
. 2
| |
| 5 | 2, 3, 4 | 3imtr4i 201 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-in 3226 df-ss 3233 df-f 5381 df-fo 5383 |
| This theorem is used by: fofun 5616 fofn 5617 dffo2 5619 foima 5620 resdif 5661 ffoss 5672 fconstfvm 5933 cocan2 5994 foeqcnvco 5996 focdmex 6344 algrflem 6465 algrflemg 6466 tposf2 6539 mapfoss 6947 mapsn 6972 ssdomg 7065 fopwdom 7136 fidcenumlemrks 7270 fidcenumlemr 7272 ctmlemr 7448 ctm 7449 ctssdclemn0 7450 ctssdccl 7451 ctssdc 7453 enumctlemm 7454 enumct 7455 fodjuomnilemdc 7484 exmidfodomrlemr 7554 exmidfodomrlemrALT 7555 suplocexprlemdisj 8087 suplocexprlemub 8090 wrdsymb 11346 ennnfonelemdc 13339 ennnfonelemg 13343 ennnfonelemp1 13346 ennnfonelemhdmp1 13349 ennnfonelemkh 13352 ennnfonelemhf1o 13353 ennnfonelemex 13354 ennnfonelemhom 13355 ctinfomlemom 13367 ctinf 13370 ctiunctlemudc 13377 ctiunctlemf 13378 omctfn 13383 imasival 13676 imasbas 13677 imasplusg 13678 imasmulr 13679 imasaddfnlemg 13684 imasaddvallemg 13685 imasaddflemg 13686 imasmnd2 13808 imasgrp2 13962 mhmid 13967 mhmmnd 13968 mhmfmhm 13969 ghmgrp 13970 ghmfghm 14179 imasring 14418 znunit 15043 znrrg 15044 dvrecap 15863 gausslemma2dlem1f1o 16277 subctctexmid 17128 pw1nct 17131 |
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