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Mirrors > Home > MPE Home > Th. List > ordtri1 | Structured version Visualization version Unicode version |
Description: A trichotomy law for ordinals. (Contributed by NM, 25-Mar-1995.) (Proof shortened by Andrew Salmon, 25-Jul-2011.) |
Ref | Expression |
---|---|
ordtri1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ordsseleq 5752 |
. 2
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2 | ordn2lp 5743 |
. . . . 5
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3 | imnan 438 |
. . . . 5
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4 | 2, 3 | sylibr 224 |
. . . 4
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5 | ordirr 5741 |
. . . . 5
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6 | eleq2 2690 |
. . . . . 6
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7 | 6 | notbid 308 |
. . . . 5
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8 | 5, 7 | syl5ibrcom 237 |
. . . 4
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9 | 4, 8 | jaao 531 |
. . 3
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10 | ordtri3or 5755 |
. . . . . 6
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11 | df-3or 1038 |
. . . . . 6
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12 | 10, 11 | sylib 208 |
. . . . 5
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13 | 12 | orcomd 403 |
. . . 4
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14 | 13 | ord 392 |
. . 3
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15 | 9, 14 | impbid 202 |
. 2
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16 | 1, 15 | bitrd 268 |
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: ontri1 5757 ordtri2 5758 ordtri4 5761 ordtr3 5769 ordtr3OLD 5770 ordintdif 5774 ordtri2or 5822 ordsucss 7018 ordsucsssuc 7023 ordsucuniel 7024 limsssuc 7050 ssnlim 7083 smoword 7463 tfrlem15 7488 nnaword 7707 nnawordex 7717 onomeneq 8150 nndomo 8154 isfinite2 8218 unfilem1 8224 wofib 8450 cantnflem1 8586 alephgeom 8905 alephdom2 8910 cflim2 9085 fin67 9217 winainflem 9515 finminlem 32312 |
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