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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 3456), 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 7697 | . 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 3442 ∪ cuni 4865 |
| 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 5245 ax-un 7692 |
| 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 3444 df-ss 3920 df-uni 4866 |
| This theorem is referenced by: unexOLD 7702 iunpw 7728 elxp4 7876 elxp5 7877 1stval 7947 2ndval 7948 fo1st 7965 fo2nd 7966 cnvf1o 8065 brtpos2 8186 naddcllem 8616 ixpsnf1o 8890 dffi3 9348 cnfcom2 9625 cnfcom3lem 9626 cnfcom3 9627 ttrclse 9650 trcl 9651 rankc2 9797 rankxpl 9801 rankxpsuc 9808 acnlem 9972 dfac2a 10054 fin23lem14 10257 fin23lem16 10259 fin23lem17 10262 fin23lem38 10273 fin23lem39 10274 itunisuc 10343 axdc3lem2 10375 axcclem 10381 ac5b 10402 ttukey 10442 wunex2 10663 wuncval2 10672 intgru 10739 pnfex 11199 prdsvallem 17388 prdsval 17389 prdsds 17398 wunfunc 17839 wunnat 17897 arwval 17981 catcfuccl 18056 catcxpccl 18144 zrhval 21479 mreclatdemoBAD 23057 ptbasin2 23539 ptbasfi 23542 dfac14 23579 ptcmplem2 24014 ptcmplem3 24015 ptcmp 24019 cnextfvval 24026 cnextcn 24028 minveclem4a 25403 oldf 27850 madefi 27926 precsexlem10 28229 xrge0tsmsbi 33174 dimval 33784 dimvalfi 33785 locfinreflem 34024 pstmfval 34080 pstmxmet 34081 esumex 34213 msrval 35760 dfrdg2 36015 fvbigcup 36122 ctbssinf 37688 ptrest 37899 heiborlem1 38091 heiborlem3 38093 heibor 38101 dicval 41581 prjcrvfval 43018 aomclem1 43440 dfac21 43452 ntrrn 44507 ntrf 44508 dssmapntrcls 44513 permaxun 45396 fourierdlem70 46563 caragendifcl 46901 cnfsmf 47127 tposideq 49276 setrec1lem3 50077 setrec2fun 50080 |
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