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| Mirrors > Home > ILE Home > Th. List > nnwetri | Unicode version | ||
| Description: A natural number is
well-ordered by |
| Ref | Expression |
|---|---|
| nnwetri |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnord 4708 |
. . 3
| |
| 2 | ordwe 4672 |
. . 3
| |
| 3 | 1, 2 | syl 14 |
. 2
|
| 4 | simprl 529 |
. . . . 5
| |
| 5 | simpl 109 |
. . . . 5
| |
| 6 | elnn 4702 |
. . . . 5
| |
| 7 | 4, 5, 6 | syl2anc 411 |
. . . 4
|
| 8 | simprr 531 |
. . . . 5
| |
| 9 | elnn 4702 |
. . . . 5
| |
| 10 | 8, 5, 9 | syl2anc 411 |
. . . 4
|
| 11 | nntri3or 6656 |
. . . . 5
| |
| 12 | epel 4387 |
. . . . . 6
| |
| 13 | biid 171 |
. . . . . 6
| |
| 14 | epel 4387 |
. . . . . 6
| |
| 15 | 12, 13, 14 | 3orbi123i 1213 |
. . . . 5
|
| 16 | 11, 15 | sylibr 134 |
. . . 4
|
| 17 | 7, 10, 16 | syl2anc 411 |
. . 3
|
| 18 | 17 | ralrimivva 2612 |
. 2
|
| 19 | 3, 18 | jca 306 |
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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-nul 4213 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-iinf 4684 |
| This theorem depends on definitions: df-bi 117 df-3or 1003 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2802 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-nul 3493 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-br 4087 df-opab 4149 df-tr 4186 df-eprel 4384 df-frfor 4426 df-frind 4427 df-wetr 4429 df-iord 4461 df-on 4463 df-suc 4466 df-iom 4687 |
| This theorem is referenced by: (None) |
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