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| 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 3444), 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 7691 | . 2 ⊢ (𝐴 ∈ V → ∪ 𝐴 ∈ V) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ ∪ 𝐴 ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 Vcvv 3430 ∪ cuni 4851 |
| 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-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5232 ax-un 7686 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-v 3432 df-ss 3907 df-uni 4852 |
| This theorem is referenced by: unexOLD 7696 iunpw 7722 elxp4 7870 elxp5 7871 1stval 7941 2ndval 7942 fo1st 7959 fo2nd 7960 cnvf1o 8058 brtpos2 8179 naddcllem 8609 ixpsnf1o 8883 dffi3 9341 cnfcom2 9620 cnfcom3lem 9621 cnfcom3 9622 ttrclse 9645 trcl 9646 rankc2 9792 rankxpl 9796 rankxpsuc 9803 acnlem 9967 dfac2a 10049 fin23lem14 10252 fin23lem16 10254 fin23lem17 10257 fin23lem38 10268 fin23lem39 10269 itunisuc 10338 axdc3lem2 10370 axcclem 10376 ac5b 10397 ttukey 10437 wunex2 10658 wuncval2 10667 intgru 10734 pnfex 11195 prdsvallem 17414 prdsval 17415 prdsds 17424 wunfunc 17865 wunnat 17923 arwval 18007 catcfuccl 18082 catcxpccl 18170 zrhval 21503 mreclatdemoBAD 23077 ptbasin2 23559 ptbasfi 23562 dfac14 23599 ptcmplem2 24034 ptcmplem3 24035 ptcmp 24039 cnextfvval 24046 cnextcn 24048 minveclem4a 25413 oldf 27849 madefi 27925 precsexlem10 28228 xrge0tsmsbi 33156 dimval 33766 dimvalfi 33767 locfinreflem 34006 pstmfval 34062 pstmxmet 34063 esumex 34195 msrval 35742 dfrdg2 35997 fvbigcup 36104 ttctr 36697 ttcmin 36700 dfttc2g 36710 ctbssinf 37744 ptrest 37962 heiborlem1 38154 heiborlem3 38156 heibor 38164 dicval 41644 prjcrvfval 43086 aomclem1 43508 dfac21 43520 ntrrn 44575 ntrf 44576 dssmapntrcls 44581 permaxun 45464 fourierdlem70 46630 caragendifcl 46968 cnfsmf 47194 tposideq 49383 setrec1lem3 50184 setrec2fun 50187 |
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