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Mirrors > Home > ILE Home > Th. List > Mathboxes > bj-nnelirr | Unicode version |
Description: A natural number does not belong to itself. Version of elirr 4518 for natural numbers, which does not require ax-setind 4514. (Contributed by BJ, 24-Nov-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-nnelirr |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | noel 3413 | . 2 | |
2 | df-suc 4349 | . . . . . 6 | |
3 | 2 | eleq2i 2233 | . . . . 5 |
4 | elun 3263 | . . . . . 6 | |
5 | bj-nntrans 13833 | . . . . . . . 8 | |
6 | sucssel 4402 | . . . . . . . 8 | |
7 | 5, 6 | syld 45 | . . . . . . 7 |
8 | vex 2729 | . . . . . . . . . 10 | |
9 | 8 | sucid 4395 | . . . . . . . . 9 |
10 | elsni 3594 | . . . . . . . . 9 | |
11 | 9, 10 | eleqtrid 2255 | . . . . . . . 8 |
12 | 11 | a1i 9 | . . . . . . 7 |
13 | 7, 12 | jaod 707 | . . . . . 6 |
14 | 4, 13 | syl5bi 151 | . . . . 5 |
15 | 3, 14 | syl5bi 151 | . . . 4 |
16 | 15 | con3d 621 | . . 3 |
17 | 16 | rgen 2519 | . 2 |
18 | ax-bdel 13703 | . . . 4 BOUNDED | |
19 | 18 | ax-bdn 13699 | . . 3 BOUNDED |
20 | nfv 1516 | . . 3 | |
21 | nfv 1516 | . . 3 | |
22 | nfv 1516 | . . 3 | |
23 | eleq1 2229 | . . . . . 6 | |
24 | eleq2 2230 | . . . . . 6 | |
25 | 23, 24 | bitrd 187 | . . . . 5 |
26 | 25 | notbid 657 | . . . 4 |
27 | 26 | biimprd 157 | . . 3 |
28 | elequ1 2140 | . . . . . 6 | |
29 | elequ2 2141 | . . . . . 6 | |
30 | 28, 29 | bitrd 187 | . . . . 5 |
31 | 30 | notbid 657 | . . . 4 |
32 | 31 | biimpd 143 | . . 3 |
33 | eleq1 2229 | . . . . . 6 | |
34 | eleq2 2230 | . . . . . 6 | |
35 | 33, 34 | bitrd 187 | . . . . 5 |
36 | 35 | notbid 657 | . . . 4 |
37 | 36 | biimprd 157 | . . 3 |
38 | nfcv 2308 | . . 3 | |
39 | nfv 1516 | . . 3 | |
40 | eleq1 2229 | . . . . . 6 | |
41 | eleq2 2230 | . . . . . 6 | |
42 | 40, 41 | bitrd 187 | . . . . 5 |
43 | 42 | notbid 657 | . . . 4 |
44 | 43 | biimpd 143 | . . 3 |
45 | 19, 20, 21, 22, 27, 32, 37, 38, 39, 44 | bj-bdfindisg 13830 | . 2 |
46 | 1, 17, 45 | mp2an 423 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wo 698 wceq 1343 wcel 2136 wral 2444 cun 3114 wss 3116 c0 3409 csn 3576 csuc 4343 com 4567 |
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 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-nul 4108 ax-pr 4187 ax-un 4411 ax-bd0 13695 ax-bdor 13698 ax-bdn 13699 ax-bdal 13700 ax-bdex 13701 ax-bdeq 13702 ax-bdel 13703 ax-bdsb 13704 ax-bdsep 13766 ax-infvn 13823 |
This theorem depends on definitions: df-bi 116 df-tru 1346 df-nf 1449 df-sb 1751 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ral 2449 df-rex 2450 df-rab 2453 df-v 2728 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-nul 3410 df-sn 3582 df-pr 3583 df-uni 3790 df-int 3825 df-suc 4349 df-iom 4568 df-bdc 13723 df-bj-ind 13809 |
This theorem is referenced by: bj-nnen2lp 13836 |
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