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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 7449 ctm 7450 ctssdclemn0 7451 ctssdccl 7452 ctssdc 7454 enumctlemm 7455 enumct 7456 fodjuomnilemdc 7485 exmidfodomrlemr 7555 exmidfodomrlemrALT 7556 suplocexprlemdisj 8088 suplocexprlemub 8091 wrdsymb 11348 ennnfonelemdc 13342 ennnfonelemg 13346 ennnfonelemp1 13349 ennnfonelemhdmp1 13352 ennnfonelemkh 13355 ennnfonelemhf1o 13356 ennnfonelemex 13357 ennnfonelemhom 13358 ctinfomlemom 13370 ctinf 13373 ctiunctlemudc 13380 ctiunctlemf 13381 omctfn 13386 imasival 13680 imasbas 13681 imasplusg 13682 imasmulr 13683 imasaddfnlemg 13688 imasaddvallemg 13689 imasaddflemg 13690 imasmnd2 13812 imasgrp2 13966 mhmid 13971 mhmmnd 13972 mhmfmhm 13973 ghmgrp 13974 ghmfghm 14214 imasring 14453 znunit 15078 znrrg 15079 dvrecap 15905 gausslemma2dlem1f1o 16345 subctctexmid 17196 pw1nct 17199 |
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