| Mathbox for Jim Kingdon |
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| Description: Ordering on a natural number generates a tight apartness. (Contributed by Jim Kingdon, 7-Aug-2022.) |
| Ref | Expression |
|---|---|
| nnti.a |
|
| Ref | Expression |
|---|---|
| nnti |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simprl 531 |
. . . 4
| |
| 2 | nnti.a |
. . . . 5
| |
| 3 | 2 | adantr 276 |
. . . 4
|
| 4 | elnn 4730 |
. . . 4
| |
| 5 | 1, 3, 4 | syl2anc 411 |
. . 3
|
| 6 | simprr 533 |
. . . 4
| |
| 7 | elnn 4730 |
. . . 4
| |
| 8 | 6, 3, 7 | syl2anc 411 |
. . 3
|
| 9 | nntri3 6732 |
. . 3
| |
| 10 | 5, 8, 9 | syl2anc 411 |
. 2
|
| 11 | epel 4415 |
. . . 4
| |
| 12 | 11 | notbii 674 |
. . 3
|
| 13 | epel 4415 |
. . . 4
| |
| 14 | 13 | notbii 674 |
. . 3
|
| 15 | 12, 14 | anbi12i 460 |
. 2
|
| 16 | 10, 15 | bitr4di 198 |
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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4230 ax-nul 4238 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-iinf 4712 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-ral 2527 df-rex 2528 df-v 2817 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-nul 3511 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-br 4112 df-opab 4174 df-tr 4211 df-eprel 4412 df-iord 4489 df-on 4491 df-suc 4494 df-iom 4715 |
| This theorem is referenced by: (None) |
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