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Mirrors > Home > MPE Home > Th. List > coflim | Structured version Visualization version Unicode version |
Description: A simpler expression for the cofinality predicate, at a limit ordinal. (Contributed by Mario Carneiro, 28-Feb-2013.) |
Ref | Expression |
---|---|
coflim |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq2 2690 | . . . . 5 | |
2 | 1 | biimprd 238 | . . . 4 |
3 | eluni2 4440 | . . . . 5 | |
4 | limord 5784 | . . . . . . . . 9 | |
5 | ssel2 3598 | . . . . . . . . 9 | |
6 | ordelon 5747 | . . . . . . . . 9 | |
7 | 4, 5, 6 | syl2an 494 | . . . . . . . 8 |
8 | 7 | expr 643 | . . . . . . 7 |
9 | onelss 5766 | . . . . . . 7 | |
10 | 8, 9 | syl6 35 | . . . . . 6 |
11 | 10 | reximdvai 3015 | . . . . 5 |
12 | 3, 11 | syl5bi 232 | . . . 4 |
13 | 2, 12 | syl9r 78 | . . 3 |
14 | 13 | ralrimdv 2968 | . 2 |
15 | uniss 4458 | . . . . . 6 | |
16 | 15 | 3ad2ant2 1083 | . . . . 5 |
17 | uniss2 4470 | . . . . . 6 | |
18 | 17 | 3ad2ant3 1084 | . . . . 5 |
19 | 16, 18 | eqssd 3620 | . . . 4 |
20 | limuni 5785 | . . . . 5 | |
21 | 20 | 3ad2ant1 1082 | . . . 4 |
22 | 19, 21 | eqtr4d 2659 | . . 3 |
23 | 22 | 3expia 1267 | . 2 |
24 | 14, 23 | impbid 202 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 w3a 1037 wceq 1483 wcel 1990 wral 2912 wrex 2913 wss 3574 cuni 4436 word 5722 con0 5723 wlim 5724 |
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-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-dif 3577 df-un 3579 df-in 3581 df-ss 3588 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 df-on 5727 df-lim 5728 |
This theorem is referenced by: cflim3 9084 pwcfsdom 9405 |
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