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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 4512 for natural numbers, which does not require ax-setind 4508. (Contributed by BJ, 24-Nov-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-nnelirr |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | noel 3408 | . 2 | |
2 | df-suc 4343 | . . . . . 6 | |
3 | 2 | eleq2i 2231 | . . . . 5 |
4 | elun 3258 | . . . . . 6 | |
5 | bj-nntrans 13668 | . . . . . . . 8 | |
6 | sucssel 4396 | . . . . . . . 8 | |
7 | 5, 6 | syld 45 | . . . . . . 7 |
8 | vex 2724 | . . . . . . . . . 10 | |
9 | 8 | sucid 4389 | . . . . . . . . 9 |
10 | elsni 3588 | . . . . . . . . 9 | |
11 | 9, 10 | eleqtrid 2253 | . . . . . . . 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 2517 | . 2 |
18 | ax-bdel 13538 | . . . 4 BOUNDED | |
19 | 18 | ax-bdn 13534 | . . 3 BOUNDED |
20 | nfv 1515 | . . 3 | |
21 | nfv 1515 | . . 3 | |
22 | nfv 1515 | . . 3 | |
23 | eleq1 2227 | . . . . . 6 | |
24 | eleq2 2228 | . . . . . 6 | |
25 | 23, 24 | bitrd 187 | . . . . 5 |
26 | 25 | notbid 657 | . . . 4 |
27 | 26 | biimprd 157 | . . 3 |
28 | elequ1 2139 | . . . . . 6 | |
29 | elequ2 2140 | . . . . . 6 | |
30 | 28, 29 | bitrd 187 | . . . . 5 |
31 | 30 | notbid 657 | . . . 4 |
32 | 31 | biimpd 143 | . . 3 |
33 | eleq1 2227 | . . . . . 6 | |
34 | eleq2 2228 | . . . . . 6 | |
35 | 33, 34 | bitrd 187 | . . . . 5 |
36 | 35 | notbid 657 | . . . 4 |
37 | 36 | biimprd 157 | . . 3 |
38 | nfcv 2306 | . . 3 | |
39 | nfv 1515 | . . 3 | |
40 | eleq1 2227 | . . . . . 6 | |
41 | eleq2 2228 | . . . . . 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 13665 | . 2 |
46 | 1, 17, 45 | mp2an 423 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wo 698 wceq 1342 wcel 2135 wral 2442 cun 3109 wss 3111 c0 3404 csn 3570 csuc 4337 com 4561 |
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-bdn 13534 ax-bdal 13535 ax-bdex 13536 ax-bdeq 13537 ax-bdel 13538 ax-bdsb 13539 ax-bdsep 13601 ax-infvn 13658 |
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-nnen2lp 13671 |
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