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| Mirrors > Home > ILE Home > Th. List > nntr2 | Unicode version | ||
| Description: Transitive law for natural numbers. (Contributed by Jim Kingdon, 22-Jul-2023.) |
| Ref | Expression |
|---|---|
| nntr2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnon 4676 |
. . . . 5
| |
| 2 | 1 | ad3antlr 493 |
. . . 4
|
| 3 | simpr 110 |
. . . . 5
| |
| 4 | simprr 531 |
. . . . . 6
| |
| 5 | 4 | adantr 276 |
. . . . 5
|
| 6 | 3, 5 | jca 306 |
. . . 4
|
| 7 | ontr1 4454 |
. . . 4
| |
| 8 | 2, 6, 7 | sylc 62 |
. . 3
|
| 9 | simpr 110 |
. . . 4
| |
| 10 | 4 | adantr 276 |
. . . 4
|
| 11 | 9, 10 | eqeltrd 2284 |
. . 3
|
| 12 | simplrl 535 |
. . . . 5
| |
| 13 | simpr 110 |
. . . . 5
| |
| 14 | 12, 13 | sseldd 3202 |
. . . 4
|
| 15 | simplr 528 |
. . . . . . 7
| |
| 16 | elnn 4672 |
. . . . . . 7
| |
| 17 | 4, 15, 16 | syl2anc 411 |
. . . . . 6
|
| 18 | 17 | adantr 276 |
. . . . 5
|
| 19 | nnord 4678 |
. . . . 5
| |
| 20 | ordirr 4608 |
. . . . 5
| |
| 21 | 18, 19, 20 | 3syl 17 |
. . . 4
|
| 22 | 14, 21 | pm2.21dd 621 |
. . 3
|
| 23 | simpll 527 |
. . . 4
| |
| 24 | nntri3or 6602 |
. . . 4
| |
| 25 | 23, 17, 24 | syl2anc 411 |
. . 3
|
| 26 | 8, 11, 22, 25 | mpjao3dan 1320 |
. 2
|
| 27 | 26 | ex 115 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2180 ax-14 2181 ax-ext 2189 ax-sep 4178 ax-nul 4186 ax-pow 4234 ax-pr 4269 ax-un 4498 ax-setind 4603 ax-iinf 4654 |
| This theorem depends on definitions: df-bi 117 df-3or 982 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ne 2379 df-ral 2491 df-rex 2492 df-v 2778 df-dif 3176 df-un 3178 df-in 3180 df-ss 3187 df-nul 3469 df-pw 3628 df-sn 3649 df-pr 3650 df-uni 3865 df-int 3900 df-tr 4159 df-iord 4431 df-on 4433 df-suc 4436 df-iom 4657 |
| This theorem is referenced by: (None) |
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