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| Description: Transitive law for ordinal numbers. Exercise 3 of [TakeutiZaring] p. 40. |
| Ref | Expression |
|---|---|
| ontr2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eloni 3853 |
. 2
| |
| 2 | eloni 3853 |
. 2
| |
| 3 | ordtr2 3887 |
. 2
| |
| 4 | 1, 2, 3 | syl2an 699 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: smoge 5321 oeordsuc 5475 omxpenlem 5712 rankxplim 6124 infxpenlem 6212 omsubindss 6244 alephle 6278 alephleOLD 6279 pwcfsdom 6527 omopthlem2 14749 axfelem6 14951 omsubindssOLD 16482 smogeOLD 17537 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1621 ax-gen 1622 ax-8 1623 ax-9 1624 ax-10 1625 ax-11 1626 ax-12 1627 ax-14 1629 ax-17 1634 ax-4 1637 ax-5o 1639 ax-6o 1642 ax-9o 1792 ax-10o 1810 ax-16 1883 ax-11o 1893 ax-ext 2152 ax-sep 3638 ax-nul 3645 ax-pow 3681 ax-pr 3719 |
| This theorem depends on definitions: df-bi 232 df-or 434 df-an 435 df-3or 1131 df-3an 1132 df-ex 1645 df-sb 1845 df-eu 2070 df-mo 2071 df-clab 2158 df-cleq 2163 df-clel 2166 df-ne 2297 df-ral 2389 df-rex 2390 df-v 2571 df-dif 2862 df-un 2864 df-in 2866 df-ss 2868 df-pss 2870 df-nul 3115 df-pw 3261 df-sn 3274 df-pr 3275 df-op 3278 df-uni 3399 df-br 3540 df-opab 3598 df-tr 3612 df-eprel 3776 df-po 3784 df-so 3796 df-fr 3814 df-we 3830 df-ord 3846 df-on 3847 |