Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > coex | Structured version Visualization version GIF version |
Description: The composition of two sets is a set. (Contributed by NM, 15-Dec-2003.) |
Ref | Expression |
---|---|
coex.1 | ⊢ 𝐴 ∈ V |
coex.2 | ⊢ 𝐵 ∈ V |
Ref | Expression |
---|---|
coex | ⊢ (𝐴 ∘ 𝐵) ∈ V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | coex.1 | . 2 ⊢ 𝐴 ∈ V | |
2 | coex.2 | . 2 ⊢ 𝐵 ∈ V | |
3 | coexg 7628 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐴 ∘ 𝐵) ∈ V) | |
4 | 1, 2, 3 | mp2an 690 | 1 ⊢ (𝐴 ∘ 𝐵) ∈ V |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2110 Vcvv 3495 ∘ ccom 5554 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2156 ax-12 2172 ax-ext 2793 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5322 ax-un 7455 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3497 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4833 df-br 5060 df-opab 5122 df-xp 5556 df-rel 5557 df-cnv 5558 df-co 5559 df-dm 5560 df-rn 5561 |
This theorem is referenced by: domtr 8556 enfixsn 8620 wdomtr 9033 cfcoflem 9688 axcc3 9854 axdc4uzlem 13345 hashfacen 13806 cofu1st 17147 cofu2nd 17149 cofucl 17152 fucid 17235 sursubmefmnd 18055 injsubmefmnd 18056 smndex1mgm 18066 gsumzaddlem 19035 selvval 20325 evls1fval 20476 evls1val 20477 evl1fval 20485 evl1val 20486 cnfldfun 20551 cnfldfunALT 20552 znle 20677 xkococnlem 22261 xkococn 22262 efmndtmd 22703 pserulm 25004 imsval 28456 tocycf 30754 eulerpartgbij 31625 derangenlem 32413 subfacp1lem5 32426 poimirlem9 34895 poimirlem15 34901 poimirlem17 34903 poimirlem20 34906 mbfresfi 34932 tendopl2 37907 erngplus2 37934 erngplus2-rN 37942 dvaplusgv 38140 dvhvaddass 38227 dvhlveclem 38238 diblss 38300 diblsmopel 38301 dicvaddcl 38320 dicvscacl 38321 cdlemn7 38333 dihordlem7 38344 dihopelvalcpre 38378 xihopellsmN 38384 dihopellsm 38385 rabren3dioph 39405 fzisoeu 41559 stirlinglem14 42365 fundcmpsurinjpreimafv 43561 isomushgr 43984 isomgrtr 43997 |
Copyright terms: Public domain | W3C validator |