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Mirrors > Home > MPE Home > Th. List > ordtri3OLD | Structured version Visualization version Unicode version |
Description: Obsolete proof of ordtri3 5759 as of 24-Sep-2021. (Contributed by NM, 18-Oct-1995.) (Proof shortened by Andrew Salmon, 25-Jul-2011.) (New usage is discouraged.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
ordtri3OLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ordirr 5741 | . . . . . 6 | |
2 | eleq2 2690 | . . . . . . 7 | |
3 | 2 | notbid 308 | . . . . . 6 |
4 | 1, 3 | syl5ib 234 | . . . . 5 |
5 | ordirr 5741 | . . . . . 6 | |
6 | eleq2 2690 | . . . . . . 7 | |
7 | 6 | notbid 308 | . . . . . 6 |
8 | 5, 7 | syl5ibr 236 | . . . . 5 |
9 | 4, 8 | anim12d 586 | . . . 4 |
10 | 9 | com12 32 | . . 3 |
11 | pm4.56 516 | . . 3 | |
12 | 10, 11 | syl6ib 241 | . 2 |
13 | ordtri3or 5755 | . . . . 5 | |
14 | df-3or 1038 | . . . . 5 | |
15 | 13, 14 | sylib 208 | . . . 4 |
16 | or32 549 | . . . 4 | |
17 | 15, 16 | sylib 208 | . . 3 |
18 | 17 | ord 392 | . 2 |
19 | 12, 18 | impbid 202 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wo 383 wa 384 w3o 1036 wceq 1483 wcel 1990 word 5722 |
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-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 |
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-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 |
This theorem is referenced by: (None) |
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