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Related theorems Unicode version |
| Description: Membership in indexed union. |
| Ref | Expression |
|---|---|
| eliun |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elisset 1815 |
. 2
| |
| 2 | elisset 1815 |
. . . 4
| |
| 3 | 2 | a1i 8 |
. . 3
|
| 4 | 3 | r19.23aiv 1742 |
. 2
|
| 5 | eleq1 1533 |
. . . 4
| |
| 6 | 5 | rexbidv 1663 |
. . 3
|
| 7 | df-iun 2565 |
. . 3
| |
| 8 | 6, 7 | elab2g 1898 |
. 2
|
| 9 | 1, 4, 8 | pm5.21nii 678 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: iunconst 2569 iuniin 2570 ss2iun 2574 iunss 2588 ssiun 2589 ssiun2 2590 iunrab 2593 iunid 2600 iun0 2601 0iun 2602 iunn0 2604 iunin2 2605 iundif2 2607 iindif2 2608 iunxsn 2609 iunxun 2611 iununi 2613 iunpwss 2615 iunpw 2911 cnvuni 3298 dmuni 3316 rnuni 3456 imaiun 3861 eluniima 3864 oalimcl 4191 oaass 4192 omordlim 4205 omlimcl 4206 oeordi 4211 trcl 4632 r1tr 4641 r1ord 4642 jech9.3 4653 rankr1 4661 r1pwcl 4674 cardaleph 4872 infxpidmlem6 7536 infxpidmlem7 7537 cncnplem2 7754 ubthlem5 8517 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 961 ax-gen 962 ax-8 963 ax-10 965 ax-12 967 ax-17 970 ax-4 972 ax-5o 974 ax-6o 977 ax-9o 1122 ax-10o 1139 ax-16 1210 ax-11o 1218 ax-ext 1459 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-ex 980 df-sb 1172 df-clab 1464 df-cleq 1469 df-clel 1472 df-rex 1649 df-v 1810 df-iun 2565 |