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 3657 | . . 3 ⊢ (ran 𝐹 = 𝐵 → ran 𝐹 ⊆ 𝐵) | |
2 | 1 | anim2i 593 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ ran 𝐹 = 𝐵) → (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) |
3 | df-fo 5894 | . 2 ⊢ (𝐹:𝐴–onto→𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 = 𝐵)) | |
4 | df-f 5892 | . 2 ⊢ (𝐹:𝐴⟶𝐵 ↔ (𝐹 Fn 𝐴 ∧ ran 𝐹 ⊆ 𝐵)) | |
5 | 2, 3, 4 | 3imtr4i 281 | 1 ⊢ (𝐹:𝐴–onto→𝐵 → 𝐹:𝐴⟶𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 = wceq 1483 ⊆ wss 3574 ran crn 5115 Fn wfn 5883 ⟶wf 5884 –onto→wfo 5886 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-in 3581 df-ss 3588 df-f 5892 df-fo 5894 |
This theorem is referenced by: fofun 6116 fofn 6117 dffo2 6119 foima 6120 resdif 6157 fimacnvinrn 6348 fconst5 6471 cocan2 6547 foeqcnvco 6555 soisoi 6578 ffoss 7127 fornex 7135 algrflem 7286 tposf2 7376 smoiso2 7466 mapsn 7899 ssdomg 8001 fopwdom 8068 unfilem2 8225 fodomfib 8240 fofinf1o 8241 brwdomn0 8474 fowdom 8476 wdomtr 8480 wdomima2g 8491 fodomfi2 8883 wdomfil 8884 alephiso 8921 iunfictbso 8937 cofsmo 9091 isf32lem10 9184 fin1a2lem7 9228 fodomb 9348 iunfo 9361 tskuni 9605 gruima 9624 gruen 9634 axpre-sup 9990 focdmex 13139 supcvg 14588 ruclem13 14971 imasval 16171 imasle 16183 imasaddfnlem 16188 imasaddflem 16190 imasvscafn 16197 imasvscaf 16199 imasless 16200 homadm 16690 homacd 16691 dmaf 16699 cdaf 16700 setcepi 16738 imasmnd2 17327 imasgrp2 17530 mhmid 17536 mhmmnd 17537 mhmfmhm 17538 ghmgrp 17539 efgred2 18166 ghmfghm 18236 ghmcyg 18297 gsumval3 18308 gsumzoppg 18344 gsum2dlem2 18370 imasring 18619 znunit 19912 znrrg 19914 cygznlem2a 19916 cygznlem3 19918 cncmp 21195 cnconn 21225 1stcfb 21248 dfac14 21421 qtopval2 21499 qtopuni 21505 qtopid 21508 qtopcld 21516 qtopcn 21517 qtopeu 21519 qtophmeo 21620 elfm3 21754 ovoliunnul 23275 uniiccdif 23346 dchrzrhcl 24970 lgsdchrval 25079 rpvmasumlem 25176 dchrmusum2 25183 dchrvmasumlem3 25188 dchrisum0ff 25196 dchrisum0flblem1 25197 rpvmasum2 25201 dchrisum0re 25202 dchrisum0lem2a 25206 grpocl 27354 grporndm 27364 vafval 27458 smfval 27460 nvgf 27473 vsfval 27488 hhssabloilem 28118 pjhf 28567 elunop 28731 unopf1o 28775 cnvunop 28777 pjinvari 29050 foresf1o 29343 rabfodom 29344 iunrdx 29382 xppreima 29449 qtophaus 29903 sigapildsys 30225 carsgclctunlem3 30382 mtyf 31449 nodense 31842 bdaydm 31890 bdayelon 31892 poimirlem26 33435 poimirlem27 33436 volsupnfl 33454 cocanfo 33512 exidreslem 33676 rngosn3 33723 rngodm1dm2 33731 founiiun 39360 founiiun0 39377 mapsnd 39388 issalnnd 40563 sge0fodjrnlem 40633 ismeannd 40684 caragenunicl 40738 fargshiftfo 41378 |
Copyright terms: Public domain | W3C validator |