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Mirrors > Home > MPE Home > Th. List > ordtri2or2 | Structured version Visualization version Unicode version |
Description: A trichotomy law for ordinal classes. (Contributed by NM, 2-Nov-2003.) |
Ref | Expression |
---|---|
ordtri2or2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ordtri2or 5822 |
. 2
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2 | ordelss 5739 |
. . . . 5
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3 | 2 | ex 450 |
. . . 4
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4 | 3 | orim1d 884 |
. . 3
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5 | 4 | adantl 482 |
. 2
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6 | 1, 5 | mpd 15 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() |
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: ordtri2or3 5824 ordssun 5827 ordequn 5828 ordunpr 7026 ackbij2 9065 sornom 9099 fin23lem23 9148 isf32lem2 9176 fpwwe2lem10 9461 noextendseq 31820 hfun 32285 |
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