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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 3508), 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 7468 | . 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 3496 ∪ cuni 4840 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-un 7463 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-v 3498 df-in 3945 df-ss 3954 df-uni 4841 |
This theorem is referenced by: unex 7471 iunpw 7495 elxp4 7629 elxp5 7630 1stval 7693 2ndval 7694 fo1st 7711 fo2nd 7712 cnvf1o 7808 brtpos2 7900 ixpsnf1o 8504 dffi3 8897 cnfcom2 9167 cnfcom3lem 9168 cnfcom3 9169 trcl 9172 rankc2 9302 rankxpl 9306 rankxpsuc 9313 acnlem 9476 dfac2a 9557 fin23lem14 9757 fin23lem16 9759 fin23lem17 9762 fin23lem38 9773 fin23lem39 9774 itunisuc 9843 axdc3lem2 9875 axcclem 9881 ac5b 9902 ttukey 9942 wunex2 10162 wuncval2 10171 intgru 10238 pnfex 10696 prdsval 16730 prdsds 16739 wunfunc 17171 wunnat 17228 arwval 17305 catcfuccl 17371 catcxpccl 17459 zrhval 20657 mreclatdemoBAD 21706 ptbasin2 22188 ptbasfi 22191 dfac14 22228 ptcmplem2 22663 ptcmplem3 22664 ptcmp 22668 cnextfvval 22675 cnextcn 22677 minveclem4a 24035 xrge0tsmsbi 30695 dimval 31003 dimvalfi 31004 locfinreflem 31106 pstmfval 31138 pstmxmet 31139 esumex 31290 msrval 32787 dfrdg2 33042 trpredex 33078 fvbigcup 33365 ctbssinf 34689 ptrest 34893 heiborlem1 35091 heiborlem3 35093 heibor 35101 dicval 38314 aomclem1 39661 dfac21 39673 ntrrn 40479 ntrf 40480 dssmapntrcls 40485 fourierdlem70 42468 caragendifcl 42803 cnfsmf 43024 setrec1lem3 44799 setrec2fun 44802 |
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