| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| Description: The subclass relationship between two ordinal classes is inherited by their successors. |
| Ref | Expression |
|---|---|
| ordsucsssuc |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ordsucelsuc 3068 |
. . . 4
| |
| 2 | 1 | negbid 610 |
. . 3
|
| 3 | 2 | adantr 389 |
. 2
|
| 4 | ordtri1 2975 |
. 2
| |
| 5 | ordtri1 2975 |
. . 3
| |
| 6 | ordsuc 3060 |
. . 3
| |
| 7 | ordsuc 3060 |
. . 3
| |
| 8 | 5, 6, 7 | syl2anb 455 |
. 2
|
| 9 | 3, 4, 8 | 3bitr4d 549 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: oawordri 4174 oeworde 4210 rankel 4660 bndrank 4662 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 ax-un 2861 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 775 df-3an 776 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-ral 1646 df-rex 1647 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-tp 2411 df-op 2412 df-uni 2499 df-br 2615 df-opab 2662 df-tr 2676 df-eprel 2827 df-po 2835 df-so 2845 df-fr 2912 df-we 2929 df-ord 2946 df-on 2947 df-suc 2949 |