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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 4525 for natural numbers, which does not require ax-setind 4521. (Contributed by BJ, 24-Nov-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-nnelirr |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | noel 3418 | . 2 | |
2 | df-suc 4356 | . . . . . 6 | |
3 | 2 | eleq2i 2237 | . . . . 5 |
4 | elun 3268 | . . . . . 6 | |
5 | bj-nntrans 13986 | . . . . . . . 8 | |
6 | sucssel 4409 | . . . . . . . 8 | |
7 | 5, 6 | syld 45 | . . . . . . 7 |
8 | vex 2733 | . . . . . . . . . 10 | |
9 | 8 | sucid 4402 | . . . . . . . . 9 |
10 | elsni 3601 | . . . . . . . . 9 | |
11 | 9, 10 | eleqtrid 2259 | . . . . . . . 8 |
12 | 11 | a1i 9 | . . . . . . 7 |
13 | 7, 12 | jaod 712 | . . . . . 6 |
14 | 4, 13 | syl5bi 151 | . . . . 5 |
15 | 3, 14 | syl5bi 151 | . . . 4 |
16 | 15 | con3d 626 | . . 3 |
17 | 16 | rgen 2523 | . 2 |
18 | ax-bdel 13856 | . . . 4 BOUNDED | |
19 | 18 | ax-bdn 13852 | . . 3 BOUNDED |
20 | nfv 1521 | . . 3 | |
21 | nfv 1521 | . . 3 | |
22 | nfv 1521 | . . 3 | |
23 | eleq1 2233 | . . . . . 6 | |
24 | eleq2 2234 | . . . . . 6 | |
25 | 23, 24 | bitrd 187 | . . . . 5 |
26 | 25 | notbid 662 | . . . 4 |
27 | 26 | biimprd 157 | . . 3 |
28 | elequ1 2145 | . . . . . 6 | |
29 | elequ2 2146 | . . . . . 6 | |
30 | 28, 29 | bitrd 187 | . . . . 5 |
31 | 30 | notbid 662 | . . . 4 |
32 | 31 | biimpd 143 | . . 3 |
33 | eleq1 2233 | . . . . . 6 | |
34 | eleq2 2234 | . . . . . 6 | |
35 | 33, 34 | bitrd 187 | . . . . 5 |
36 | 35 | notbid 662 | . . . 4 |
37 | 36 | biimprd 157 | . . 3 |
38 | nfcv 2312 | . . 3 | |
39 | nfv 1521 | . . 3 | |
40 | eleq1 2233 | . . . . . 6 | |
41 | eleq2 2234 | . . . . . 6 | |
42 | 40, 41 | bitrd 187 | . . . . 5 |
43 | 42 | notbid 662 | . . . 4 |
44 | 43 | biimpd 143 | . . 3 |
45 | 19, 20, 21, 22, 27, 32, 37, 38, 39, 44 | bj-bdfindisg 13983 | . 2 |
46 | 1, 17, 45 | mp2an 424 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wo 703 wceq 1348 wcel 2141 wral 2448 cun 3119 wss 3121 c0 3414 csn 3583 csuc 4350 com 4574 |
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 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-nul 4115 ax-pr 4194 ax-un 4418 ax-bd0 13848 ax-bdor 13851 ax-bdn 13852 ax-bdal 13853 ax-bdex 13854 ax-bdeq 13855 ax-bdel 13856 ax-bdsb 13857 ax-bdsep 13919 ax-infvn 13976 |
This theorem depends on definitions: df-bi 116 df-tru 1351 df-nf 1454 df-sb 1756 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-rab 2457 df-v 2732 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-sn 3589 df-pr 3590 df-uni 3797 df-int 3832 df-suc 4356 df-iom 4575 df-bdc 13876 df-bj-ind 13962 |
This theorem is referenced by: bj-nnen2lp 13989 |
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