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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 3467), 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 7738 | . 2 ⊢ (𝐴 ∈ V → ∪ 𝐴 ∈ V) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ ∪ 𝐴 ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2141 Vcvv 3453 ∪ cuni 4871 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-ext 2733 ax-sep 5256 ax-un 7732 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1571 df-ex 1808 df-sb 2095 df-clab 2740 df-cleq 2753 df-clel 2836 df-v 3455 df-ss 3921 df-uni 4872 |
| This theorem is referenced by: unexOLD 7743 iunpw 7769 elxp4 7918 elxp5 7919 1stval 7987 2ndval 7988 fo1st 8005 fo2nd 8006 cnvf1o 8105 brtpos2 8227 naddcllem 8661 ixpsnf1o 8935 dffi3 9390 cnfcom2 9670 cnfcom3lem 9671 cnfcom3 9672 ttrclse 9695 trcl 9696 rankc2 9842 rankxpl 9846 rankxpsuc 9853 acnlem 10031 dfac2a 10112 fin23lem14 10316 fin23lem16 10318 fin23lem17 10321 fin23lem38 10332 fin23lem39 10333 itunisuc 10402 axdc3lem2 10434 axcclem 10440 ac5b 10461 ttukey 10501 wunex2 10722 wuncval2 10731 intgru 10798 pnfex 11261 prdsvallem 17506 prdsval 17507 prdsds 17516 wunfunc 17957 wunnat 18015 arwval 18099 catcfuccl 18174 catcxpccl 18262 zrhval 21636 mreclatdemoBAD 23232 ptbasin2 23714 ptbasfi 23717 dfac14 23754 ptcmplem2 24189 ptcmplem3 24190 ptcmp 24194 cnextfvval 24201 cnextcn 24203 minveclem4a 25568 oldf 28006 madefi 28082 precsexlem10 28385 xrge0tsmsbi 33360 dimval 33957 dimvalfi 33958 locfinreflem 34196 pstmfval 34252 pstmxmet 34253 esumex 34385 msrval 35984 dfrdg2 36239 fvbigcup 36346 ttctr 36948 ttcmin 36951 dfttc2g 36961 ctbssinf 37996 ptrest 38214 heiborlem1 38406 heiborlem3 38408 heibor 38416 dicval 41896 prjcrvfval 43311 aomclem1 43729 dfac21 43741 ntrrn 44796 ntrf 44797 dssmapntrcls 44802 permaxun 45668 fourierdlem70 46838 caragendifcl 47176 cnfsmf 47402 tposideq 49611 setrec1lem3 50412 setrec2fun 50415 |
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