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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 7694 | . 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 7689 |
| 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 7699 iunpw 7725 elxp4 7873 elxp5 7874 1stval 7944 2ndval 7945 fo1st 7962 fo2nd 7963 cnvf1o 8061 brtpos2 8182 naddcllem 8612 ixpsnf1o 8886 dffi3 9344 cnfcom2 9623 cnfcom3lem 9624 cnfcom3 9625 ttrclse 9648 trcl 9649 rankc2 9795 rankxpl 9799 rankxpsuc 9806 acnlem 9970 dfac2a 10052 fin23lem14 10255 fin23lem16 10257 fin23lem17 10260 fin23lem38 10271 fin23lem39 10272 itunisuc 10341 axdc3lem2 10373 axcclem 10379 ac5b 10400 ttukey 10440 wunex2 10661 wuncval2 10670 intgru 10737 pnfex 11198 prdsvallem 17417 prdsval 17418 prdsds 17427 wunfunc 17868 wunnat 17926 arwval 18010 catcfuccl 18085 catcxpccl 18173 zrhval 21487 mreclatdemoBAD 23061 ptbasin2 23543 ptbasfi 23546 dfac14 23583 ptcmplem2 24018 ptcmplem3 24019 ptcmp 24023 cnextfvval 24030 cnextcn 24032 minveclem4a 25397 oldf 27829 madefi 27905 precsexlem10 28208 xrge0tsmsbi 33135 dimval 33745 dimvalfi 33746 locfinreflem 33984 pstmfval 34040 pstmxmet 34041 esumex 34173 msrval 35720 dfrdg2 35975 fvbigcup 36082 ttctr 36675 ttcmin 36678 dfttc2g 36688 ctbssinf 37722 ptrest 37940 heiborlem1 38132 heiborlem3 38134 heibor 38142 dicval 41622 prjcrvfval 43064 aomclem1 43482 dfac21 43494 ntrrn 44549 ntrf 44550 dssmapntrcls 44555 permaxun 45438 fourierdlem70 46604 caragendifcl 46942 cnfsmf 47168 tposideq 49357 setrec1lem3 50158 setrec2fun 50161 |
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