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Mirrors > Home > ILE Home > Th. List > elun | Unicode version |
Description: Expansion of membership in class union. Theorem 12 of [Suppes] p. 25. (Contributed by NM, 7-Aug-1994.) |
Ref | Expression |
---|---|
elun |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elex 2697 | . 2 | |
2 | elex 2697 | . . 3 | |
3 | elex 2697 | . . 3 | |
4 | 2, 3 | jaoi 705 | . 2 |
5 | eleq1 2202 | . . . 4 | |
6 | eleq1 2202 | . . . 4 | |
7 | 5, 6 | orbi12d 782 | . . 3 |
8 | df-un 3075 | . . 3 | |
9 | 7, 8 | elab2g 2831 | . 2 |
10 | 1, 4, 9 | pm5.21nii 693 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wo 697 wceq 1331 wcel 1480 cvv 2686 cun 3069 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-v 2688 df-un 3075 |
This theorem is referenced by: uneqri 3218 uncom 3220 uneq1 3223 unass 3233 ssun1 3239 unss1 3245 ssequn1 3246 unss 3250 rexun 3256 ralunb 3257 unssdif 3311 unssin 3315 inssun 3316 indi 3323 undi 3324 difundi 3328 difindiss 3330 undif3ss 3337 symdifxor 3342 rabun2 3355 reuun2 3359 undif4 3425 ssundifim 3446 dcun 3473 dfpr2 3546 eltpg 3569 pwprss 3732 pwtpss 3733 uniun 3755 intun 3802 iunun 3891 iunxun 3892 iinuniss 3895 brun 3979 undifexmid 4117 exmidundif 4129 exmidundifim 4130 pwunss 4205 elsuci 4325 elsucg 4326 elsuc2g 4327 ordsucim 4416 sucprcreg 4464 opthprc 4590 xpundi 4595 xpundir 4596 funun 5167 mptun 5254 unpreima 5545 reldmtpos 6150 dftpos4 6160 tpostpos 6161 onunsnss 6805 unfidisj 6810 undifdcss 6811 fidcenumlemrks 6841 djulclb 6940 eldju 6953 eldju2ndl 6957 eldju2ndr 6958 ctssdccl 6996 elnn0 8979 un0addcl 9010 un0mulcl 9011 elxnn0 9042 ltxr 9562 elxr 9563 fzsplit2 9830 elfzp1 9852 uzsplit 9872 elfzp12 9879 fz01or 9891 fzosplit 9954 fzouzsplit 9956 elfzonlteqm1 9987 fzosplitsni 10012 hashinfuni 10523 hashennnuni 10525 hashunlem 10550 zfz1isolemiso 10582 summodclem3 11149 fsumsplit 11176 fsumsplitsn 11179 sumsplitdc 11201 reopnap 12707 djulclALT 13008 djurclALT 13009 bj-nntrans 13149 bj-nnelirr 13151 exmid1stab 13195 |
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