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Mirrors > Home > MPE Home > Th. List > ordsucun | Structured version Visualization version Unicode version |
Description: The successor of the maximum (i.e. union) of two ordinals is the maximum of their successors. (Contributed by NM, 28-Nov-2003.) |
Ref | Expression |
---|---|
ordsucun |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ordun 5829 | . . . 4 | |
2 | ordsuc 7014 | . . . . 5 | |
3 | ordelon 5747 | . . . . . 6 | |
4 | 3 | ex 450 | . . . . 5 |
5 | 2, 4 | sylbi 207 | . . . 4 |
6 | 1, 5 | syl 17 | . . 3 |
7 | ordsuc 7014 | . . . 4 | |
8 | ordsuc 7014 | . . . 4 | |
9 | ordun 5829 | . . . . 5 | |
10 | ordelon 5747 | . . . . . 6 | |
11 | 10 | ex 450 | . . . . 5 |
12 | 9, 11 | syl 17 | . . . 4 |
13 | 7, 8, 12 | syl2anb 496 | . . 3 |
14 | ordssun 5827 | . . . . . . 7 | |
15 | 14 | adantl 482 | . . . . . 6 |
16 | ordsssuc 5812 | . . . . . . 7 | |
17 | 1, 16 | sylan2 491 | . . . . . 6 |
18 | ordsssuc 5812 | . . . . . . . 8 | |
19 | 18 | adantrr 753 | . . . . . . 7 |
20 | ordsssuc 5812 | . . . . . . . 8 | |
21 | 20 | adantrl 752 | . . . . . . 7 |
22 | 19, 21 | orbi12d 746 | . . . . . 6 |
23 | 15, 17, 22 | 3bitr3d 298 | . . . . 5 |
24 | elun 3753 | . . . . 5 | |
25 | 23, 24 | syl6bbr 278 | . . . 4 |
26 | 25 | expcom 451 | . . 3 |
27 | 6, 13, 26 | pm5.21ndd 369 | . 2 |
28 | 27 | eqrdv 2620 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wo 383 wa 384 wceq 1483 wcel 1990 cun 3572 wss 3574 word 5722 con0 5723 csuc 5725 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-tr 4753 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-ord 5726 df-on 5727 df-suc 5729 |
This theorem is referenced by: rankprb 8714 noetalem4 31866 |
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