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Mirrors > Home > MPE Home > Th. List > cdainflem | Structured version Visualization version Unicode version |
Description: Any partition of omega into two pieces (which may be disjoint) contains an infinite subset. (Contributed by Mario Carneiro, 11-Feb-2013.) |
Ref | Expression |
---|---|
cdainflem |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | unfi2 8229 | . . . 4 | |
2 | sdomnen 7984 | . . . 4 | |
3 | 1, 2 | syl 17 | . . 3 |
4 | 3 | con2i 134 | . 2 |
5 | ianor 509 | . . 3 | |
6 | relen 7960 | . . . . . . . . . 10 | |
7 | 6 | brrelexi 5158 | . . . . . . . . 9 |
8 | ssun1 3776 | . . . . . . . . 9 | |
9 | ssdomg 8001 | . . . . . . . . 9 | |
10 | 7, 8, 9 | mpisyl 21 | . . . . . . . 8 |
11 | domentr 8015 | . . . . . . . 8 | |
12 | 10, 11 | mpancom 703 | . . . . . . 7 |
13 | 12 | anim1i 592 | . . . . . 6 |
14 | bren2 7986 | . . . . . 6 | |
15 | 13, 14 | sylibr 224 | . . . . 5 |
16 | 15 | ex 450 | . . . 4 |
17 | ssun2 3777 | . . . . . . . . 9 | |
18 | ssdomg 8001 | . . . . . . . . 9 | |
19 | 7, 17, 18 | mpisyl 21 | . . . . . . . 8 |
20 | domentr 8015 | . . . . . . . 8 | |
21 | 19, 20 | mpancom 703 | . . . . . . 7 |
22 | 21 | anim1i 592 | . . . . . 6 |
23 | bren2 7986 | . . . . . 6 | |
24 | 22, 23 | sylibr 224 | . . . . 5 |
25 | 24 | ex 450 | . . . 4 |
26 | 16, 25 | orim12d 883 | . . 3 |
27 | 5, 26 | syl5bi 232 | . 2 |
28 | 4, 27 | mpd 15 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wo 383 wa 384 wcel 1990 cvv 3200 cun 3572 wss 3574 class class class wbr 4653 com 7065 cen 7952 cdom 7953 csdm 7954 |
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-pow 4843 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-reu 2919 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-int 4476 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-oadd 7564 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-fin 7959 |
This theorem is referenced by: cdainf 9014 |
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