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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 5386 |
. 2
| |
| 4 | df-f 5384 |
. 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 5384 df-fo 5386 |
| This theorem is used by: fofun 5619 fofn 5620 dffo2 5622 foima 5623 resdif 5664 ffoss 5675 fconstfvm 5936 cocan2 5997 foeqcnvco 5999 focdmex 6348 algrflem 6469 algrflemg 6470 tposf2 6544 mapfoss 6952 mapsn 6978 ssdomg 7071 fopwdom 7142 fidcenumlemrks 7277 fidcenumlemr 7279 ctmlemr 7454 ctm 7455 ctssdclemn0 7456 ctssdccl 7457 ctssdc 7459 enumctlemm 7460 enumct 7461 fodjuomnilemdc 7490 exmidfodomrlemr 7560 exmidfodomrlemrALT 7561 suplocexprlemdisj 8093 suplocexprlemub 8096 wrdsymb 11353 ennnfonelemdc 13347 ennnfonelemg 13351 ennnfonelemp1 13354 ennnfonelemhdmp1 13357 ennnfonelemkh 13360 ennnfonelemhf1o 13361 ennnfonelemex 13362 ennnfonelemhom 13363 ctinfomlemom 13375 ctinf 13378 ctiunctlemudc 13385 ctiunctlemf 13386 omctfn 13391 imasival 13685 imasbas 13686 imasplusg 13687 imasmulr 13688 imasaddfnlemg 13693 imasaddvallemg 13694 imasaddflemg 13695 imasmnd2 13817 imasgrp2 13971 mhmid 13976 mhmmnd 13977 mhmfmhm 13978 ghmgrp 13979 ghmfghm 14219 gsum2dfilem2 14271 imasring 14477 znunit 15102 znrrg 15103 dvrecap 15956 gausslemma2dlem1f1o 16401 subctctexmid 17252 pw1nct 17255 |
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