| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > uniex | Structured version Visualization version GIF version | ||
| Description: The Axiom of Union in class notation. This says that if 𝐴 is a set i.e. 𝐴 ∈ V (see isset 3447), then the union of 𝐴 is also a set. Same as Axiom 3 of [TakeutiZaring] p. 16. (Contributed by NM, 11-Aug-1993.) |
| Ref | Expression |
|---|---|
| uniex.1 | ⊢ 𝐴 ∈ V |
| Ref | Expression |
|---|---|
| uniex | ⊢ ∪ 𝐴 ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uniex.1 | . 2 ⊢ 𝐴 ∈ V | |
| 2 | uniexg 7686 | . 2 ⊢ (𝐴 ∈ V → ∪ 𝐴 ∈ V) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ ∪ 𝐴 ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2121 Vcvv 3433 ∪ cuni 4840 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-ext 2713 ax-sep 5220 ax-un 7681 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-tru 1551 df-ex 1788 df-sb 2075 df-clab 2720 df-cleq 2733 df-clel 2816 df-v 3435 df-ss 3901 df-uni 4841 |
| This theorem is referenced by: unexOLD 7691 iunpw 7717 elxp4 7866 elxp5 7867 1stval 7935 2ndval 7936 fo1st 7953 fo2nd 7954 cnvf1o 8052 brtpos2 8174 naddcllem 8606 ixpsnf1o 8880 dffi3 9338 cnfcom2 9618 cnfcom3lem 9619 cnfcom3 9620 ttrclse 9643 trcl 9644 rankc2 9790 rankxpl 9794 rankxpsuc 9801 acnlem 9965 dfac2a 10047 fin23lem14 10251 fin23lem16 10253 fin23lem17 10256 fin23lem38 10267 fin23lem39 10268 itunisuc 10337 axdc3lem2 10369 axcclem 10375 ac5b 10396 ttukey 10436 wunex2 10657 wuncval2 10666 intgru 10733 pnfex 11194 prdsvallem 17412 prdsval 17413 prdsds 17422 wunfunc 17863 wunnat 17921 arwval 18005 catcfuccl 18080 catcxpccl 18168 zrhval 21485 mreclatdemoBAD 23082 ptbasin2 23564 ptbasfi 23567 dfac14 23604 ptcmplem2 24039 ptcmplem3 24040 ptcmp 24044 cnextfvval 24051 cnextcn 24053 minveclem4a 25418 oldf 27849 madefi 27925 precsexlem10 28228 xrge0tsmsbi 33157 dimval 33795 dimvalfi 33796 locfinreflem 34034 pstmfval 34090 pstmxmet 34091 esumex 34223 msrval 35779 dfrdg2 36034 fvbigcup 36141 ttctr 36734 ttcmin 36737 dfttc2g 36747 ctbssinf 37781 ptrest 37999 heiborlem1 38191 heiborlem3 38193 heibor 38201 dicval 41681 prjcrvfval 43094 aomclem1 43512 dfac21 43524 ntrrn 44579 ntrf 44580 dssmapntrcls 44585 permaxun 45468 fourierdlem70 46631 caragendifcl 46969 cnfsmf 47195 tposideq 49390 setrec1lem3 50191 setrec2fun 50194 |
| Copyright terms: Public domain | W3C validator |