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Mirrors > Home > ILE Home > Th. List > nntri3or | Unicode version |
Description: Trichotomy for natural numbers. (Contributed by Jim Kingdon, 25-Aug-2019.) |
Ref | Expression |
---|---|
nntri3or |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq2 2201 | . . . . 5 | |
2 | eqeq2 2147 | . . . . 5 | |
3 | eleq1 2200 | . . . . 5 | |
4 | 1, 2, 3 | 3orbi123d 1289 | . . . 4 |
5 | 4 | imbi2d 229 | . . 3 |
6 | eleq2 2201 | . . . . 5 | |
7 | eqeq2 2147 | . . . . 5 | |
8 | eleq1 2200 | . . . . 5 | |
9 | 6, 7, 8 | 3orbi123d 1289 | . . . 4 |
10 | eleq2 2201 | . . . . 5 | |
11 | eqeq2 2147 | . . . . 5 | |
12 | eleq1 2200 | . . . . 5 | |
13 | 10, 11, 12 | 3orbi123d 1289 | . . . 4 |
14 | eleq2 2201 | . . . . 5 | |
15 | eqeq2 2147 | . . . . 5 | |
16 | eleq1 2200 | . . . . 5 | |
17 | 14, 15, 16 | 3orbi123d 1289 | . . . 4 |
18 | 0elnn 4527 | . . . . 5 | |
19 | olc 700 | . . . . . 6 | |
20 | 3orass 965 | . . . . . 6 | |
21 | 19, 20 | sylibr 133 | . . . . 5 |
22 | 18, 21 | syl 14 | . . . 4 |
23 | df-3or 963 | . . . . . 6 | |
24 | elex 2692 | . . . . . . . 8 | |
25 | elsuc2g 4322 | . . . . . . . . 9 | |
26 | 3mix1 1150 | . . . . . . . . 9 | |
27 | 25, 26 | syl6bir 163 | . . . . . . . 8 |
28 | 24, 27 | syl 14 | . . . . . . 7 |
29 | nnsucelsuc 6380 | . . . . . . . . 9 | |
30 | elsuci 4320 | . . . . . . . . 9 | |
31 | 29, 30 | syl6bi 162 | . . . . . . . 8 |
32 | eqcom 2139 | . . . . . . . . . . . . 13 | |
33 | 32 | orbi2i 751 | . . . . . . . . . . . 12 |
34 | 33 | biimpi 119 | . . . . . . . . . . 11 |
35 | 34 | orcomd 718 | . . . . . . . . . 10 |
36 | 35 | olcd 723 | . . . . . . . . 9 |
37 | 3orass 965 | . . . . . . . . 9 | |
38 | 36, 37 | sylibr 133 | . . . . . . . 8 |
39 | 31, 38 | syl6 33 | . . . . . . 7 |
40 | 28, 39 | jaao 708 | . . . . . 6 |
41 | 23, 40 | syl5bi 151 | . . . . 5 |
42 | 41 | ex 114 | . . . 4 |
43 | 9, 13, 17, 22, 42 | finds2 4510 | . . 3 |
44 | 5, 43 | vtoclga 2747 | . 2 |
45 | 44 | impcom 124 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wo 697 w3o 961 wceq 1331 wcel 1480 cvv 2681 c0 3358 csuc 4282 com 4499 |
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 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-nul 4049 ax-pow 4093 ax-pr 4126 ax-un 4350 ax-iinf 4497 |
This theorem depends on definitions: df-bi 116 df-3or 963 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ral 2419 df-rex 2420 df-v 2683 df-dif 3068 df-un 3070 df-in 3072 df-ss 3079 df-nul 3359 df-pw 3507 df-sn 3528 df-pr 3529 df-uni 3732 df-int 3767 df-tr 4022 df-iord 4283 df-on 4285 df-suc 4288 df-iom 4500 |
This theorem is referenced by: nntri2 6383 nntri1 6385 nntri3 6386 nntri2or2 6387 nndceq 6388 nndcel 6389 nnsseleq 6390 nntr2 6392 nnawordex 6417 nnwetri 6797 ltsopi 7121 pitri3or 7123 frec2uzlt2d 10170 ennnfonelemk 11902 ennnfonelemex 11916 nninfalllemn 13191 |
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