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Mirrors > Home > ILE Home > Th. List > Mathboxes > bj-2inf | Unicode version |
Description: Two formulations of the axiom of infinity (see ax-infvn 13658 and bj-omex 13659) . (Contributed by BJ, 30-Nov-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-2inf | Ind Ind |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2164 | . . . 4 | |
2 | bj-om 13654 | . . . 4 Ind Ind | |
3 | 1, 2 | mpbii 147 | . . 3 Ind Ind |
4 | bj-indeq 13646 | . . . . 5 Ind Ind | |
5 | sseq1 3160 | . . . . . . 7 | |
6 | 5 | imbi2d 229 | . . . . . 6 Ind Ind |
7 | 6 | albidv 1811 | . . . . 5 Ind Ind |
8 | 4, 7 | anbi12d 465 | . . . 4 Ind Ind Ind Ind |
9 | 8 | spcegv 2809 | . . 3 Ind Ind Ind Ind |
10 | 3, 9 | mpd 13 | . 2 Ind Ind |
11 | vex 2724 | . . . . . 6 | |
12 | bj-om 13654 | . . . . . 6 Ind Ind | |
13 | 11, 12 | ax-mp 5 | . . . . 5 Ind Ind |
14 | 13 | biimpri 132 | . . . 4 Ind Ind |
15 | 14 | eximi 1587 | . . 3 Ind Ind |
16 | isset 2727 | . . 3 | |
17 | 15, 16 | sylibr 133 | . 2 Ind Ind |
18 | 10, 17 | impbii 125 | 1 Ind Ind |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wal 1340 wceq 1342 wex 1479 wcel 2135 cvv 2721 wss 3111 com 4561 Ind wind 13643 |
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-in1 604 ax-in2 605 ax-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-13 2137 ax-14 2138 ax-ext 2146 ax-nul 4102 ax-pr 4181 ax-un 4405 ax-bd0 13530 ax-bdor 13533 ax-bdex 13536 ax-bdeq 13537 ax-bdel 13538 ax-bdsb 13539 ax-bdsep 13601 |
This theorem depends on definitions: df-bi 116 df-tru 1345 df-nf 1448 df-sb 1750 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ral 2447 df-rex 2448 df-rab 2451 df-v 2723 df-dif 3113 df-un 3115 df-in 3117 df-ss 3124 df-nul 3405 df-sn 3576 df-pr 3577 df-uni 3784 df-int 3819 df-suc 4343 df-iom 4562 df-bdc 13558 df-bj-ind 13644 |
This theorem is referenced by: bj-omex 13659 |
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