| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > fof | Structured version Visualization version GIF version | ||
| Description: An onto mapping is a mapping. (Contributed by NM, 3-Aug-1994.) |
| Ref | Expression |
|---|---|
| fof | ⊢ (𝐹:𝐴–onto→𝐵 → 𝐹:𝐴⟶𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqimss 3981 | . . 3 ⊢ (ran 𝐹 = 𝐵 → ran 𝐹 ⊆ 𝐵) | |
| 2 | 1 | anim2i 618 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ ran 𝐹 = 𝐵) → (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) |
| 3 | df-fo 6498 | . 2 ⊢ (𝐹:𝐴–onto→𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 = 𝐵)) | |
| 4 | df-f 6496 | . 2 ⊢ (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) | |
| 5 | 2, 3, 4 | 3imtr4i 292 | 1 ⊢ (𝐹:𝐴–onto→𝐵 → 𝐹:𝐴⟶𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ⊆ wss 3890 ran crn 5625 Fn wfn 6487 ⟶wf 6488 –onto→wfo 6490 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 df-ss 3907 df-f 6496 df-fo 6498 |
| This theorem is referenced by: fofun 6747 fofn 6748 dffo2 6750 foima 6751 focnvimacdmdm 6758 focofo 6759 resdif 6795 fimacnvinrn 7017 fompt 7064 fconst5 7154 cocan2 7240 foeqcnvco 7248 soisoi 7276 ffoss 7892 focdmex 7902 opco1 8066 opco2 8067 tposf2 8193 smoiso2 8302 mapfoss 8792 ssdomg 8940 fopwdom 9016 unfilem2 9209 fodomfib 9232 fodomfibOLD 9234 fofinf1o 9235 brwdomn0 9477 fowdom 9479 wdomtr 9483 wdomima2g 9494 fodomfi2 9973 wdomfil 9974 alephiso 10011 iunfictbso 10027 cofsmo 10182 isf32lem10 10275 fin1a2lem7 10319 fodomb 10439 iunfo 10452 tskuni 10697 gruima 10716 gruen 10726 axpre-sup 11083 wrdsymb 14495 supcvg 15812 ruclem13 16200 imasval 17466 imasle 17478 imasaddfnlem 17483 imasaddflem 17485 imasvscafn 17492 imasvscaf 17494 imasless 17495 homadm 17998 homacd 17999 dmaf 18007 cdaf 18008 setcepi 18046 imasmnd2 18733 sursubmefmnd 18855 imasgrp2 19022 mhmid 19030 mhmmnd 19031 mhmfmhm 19032 ghmgrp 19033 efgred2 19719 ghmfghm 19796 ghmcyg 19862 gsumval3 19873 gsumzoppg 19910 gsum2dlem2 19937 imasring 20301 znunit 21553 znrrg 21555 cygznlem2a 21557 cygznlem3 21559 cncmp 23367 cnconn 23397 1stcfb 23420 dfac14 23593 qtopval2 23671 qtopuni 23677 qtopid 23680 qtopcld 23688 qtopcn 23689 qtopeu 23691 qtophmeo 23792 elfm3 23925 ovoliunnul 25484 uniiccdif 25555 dchrzrhcl 27222 lgsdchrval 27331 rpvmasumlem 27464 dchrmusum2 27471 dchrvmasumlem3 27476 dchrisum0ff 27484 dchrisum0flblem1 27485 rpvmasum2 27489 dchrisum0re 27490 dchrisum0lem2a 27494 nodense 27670 bdaydm 27756 bdayon 27758 om2noseqlt 28305 om2noseqlt2 28306 om2noseqf1o 28307 noseqrdgfn 28312 bdayn0sf1o 28376 grpocl 30586 grporndm 30596 vafval 30689 smfval 30691 nvgf 30704 vsfval 30719 hhssabloilem 31347 pjhf 31794 elunop 31958 unopf1o 32002 cnvunop 32004 pjinvari 32277 foresf1o 32589 rabfodom 32590 iunrdx 32648 xppreima 32733 gsumpart 33139 imasmhm 33429 imasghm 33430 imasrhm 33431 qtophaus 33996 sigapildsys 34322 carsgclctunlem3 34480 mtyf 35750 poimirlem26 37981 poimirlem27 37982 volsupnfl 38000 cocanfo 38054 exidreslem 38212 rngosn3 38259 rngodm1dm2 38267 founiiun 45627 founiiun0 45638 issalnnd 46791 sge0fodjrnlem 46862 ismeannd 46913 caragenunicl 46970 fcores 47527 fcoresf1lem 47528 fcoresf1 47529 fcoresfo 47531 3f1oss1 47535 fargshiftfo 47914 uptr2 49708 |
| Copyright terms: Public domain | W3C validator |