| Intuitionistic Logic Explorer | 
      
      
      < Previous  
      Next >
      
       Nearby theorems  | 
  ||
| 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 4648 | 
. . 3
 | |
| 2 | ordwe 4612 | 
. . 3
 | |
| 3 | 1, 2 | syl 14 | 
. 2
 | 
| 4 | simprl 529 | 
. . . . 5
 | |
| 5 | simpl 109 | 
. . . . 5
 | |
| 6 | elnn 4642 | 
. . . . 5
 | |
| 7 | 4, 5, 6 | syl2anc 411 | 
. . . 4
 | 
| 8 | simprr 531 | 
. . . . 5
 | |
| 9 | elnn 4642 | 
. . . . 5
 | |
| 10 | 8, 5, 9 | syl2anc 411 | 
. . . 4
 | 
| 11 | nntri3or 6551 | 
. . . . 5
 | |
| 12 | epel 4327 | 
. . . . . 6
 | |
| 13 | biid 171 | 
. . . . . 6
 | |
| 14 | epel 4327 | 
. . . . . 6
 | |
| 15 | 12, 13, 14 | 3orbi123i 1191 | 
. . . . 5
 | 
| 16 | 11, 15 | sylibr 134 | 
. . . 4
 | 
| 17 | 7, 10, 16 | syl2anc 411 | 
. . 3
 | 
| 18 | 17 | ralrimivva 2579 | 
. 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 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-nul 4159 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-setind 4573 ax-iinf 4624 | 
| This theorem depends on definitions: df-bi 117 df-3or 981 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-v 2765 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3451 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-int 3875 df-br 4034 df-opab 4095 df-tr 4132 df-eprel 4324 df-frfor 4366 df-frind 4367 df-wetr 4369 df-iord 4401 df-on 4403 df-suc 4406 df-iom 4627 | 
| This theorem is referenced by: (None) | 
| Copyright terms: Public domain | W3C validator |