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Mirrors > Home > MPE Home > Th. List > fbunfip | Structured version Visualization version Unicode version |
Description: A helpful lemma for showing that certain sets generate filters. (Contributed by Jeff Hankins, 3-Sep-2009.) (Revised by Stefan O'Rear, 2-Aug-2015.) |
Ref | Expression |
---|---|
fbunfip |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfiun 8336 | . . . 4 | |
2 | 1 | notbid 308 | . . 3 |
3 | 3ioran 1056 | . . . 4 | |
4 | df-3an 1039 | . . . 4 | |
5 | 3, 4 | bitr2i 265 | . . 3 |
6 | 2, 5 | syl6bbr 278 | . 2 |
7 | nesym 2850 | . . . . . . 7 | |
8 | 7 | ralbii 2980 | . . . . . 6 |
9 | ralnex 2992 | . . . . . 6 | |
10 | 8, 9 | bitri 264 | . . . . 5 |
11 | 10 | ralbii 2980 | . . . 4 |
12 | ralnex 2992 | . . . 4 | |
13 | 11, 12 | bitri 264 | . . 3 |
14 | fbasfip 21672 | . . . . 5 | |
15 | fbasfip 21672 | . . . . 5 | |
16 | 14, 15 | anim12i 590 | . . . 4 |
17 | 16 | biantrurd 529 | . . 3 |
18 | 13, 17 | syl5rbb 273 | . 2 |
19 | ssfii 8325 | . . . . 5 | |
20 | ssralv 3666 | . . . . 5 | |
21 | 19, 20 | syl 17 | . . . 4 |
22 | ssfii 8325 | . . . . . 6 | |
23 | ssralv 3666 | . . . . . 6 | |
24 | 22, 23 | syl 17 | . . . . 5 |
25 | 24 | ralimdv 2963 | . . . 4 |
26 | 21, 25 | sylan9 689 | . . 3 |
27 | ineq1 3807 | . . . . . 6 | |
28 | 27 | neeq1d 2853 | . . . . 5 |
29 | ineq2 3808 | . . . . . 6 | |
30 | 29 | neeq1d 2853 | . . . . 5 |
31 | 28, 30 | cbvral2v 3179 | . . . 4 |
32 | fbssfi 21641 | . . . . . . 7 | |
33 | fbssfi 21641 | . . . . . . 7 | |
34 | r19.29 3072 | . . . . . . . . . 10 | |
35 | r19.29 3072 | . . . . . . . . . . . . 13 | |
36 | ss2in 3840 | . . . . . . . . . . . . . . . . . . 19 | |
37 | sseq2 3627 | . . . . . . . . . . . . . . . . . . . 20 | |
38 | ss0 3974 | . . . . . . . . . . . . . . . . . . . 20 | |
39 | 37, 38 | syl6bi 243 | . . . . . . . . . . . . . . . . . . 19 |
40 | 36, 39 | syl5com 31 | . . . . . . . . . . . . . . . . . 18 |
41 | 40 | necon3d 2815 | . . . . . . . . . . . . . . . . 17 |
42 | 41 | ex 450 | . . . . . . . . . . . . . . . 16 |
43 | 42 | com13 88 | . . . . . . . . . . . . . . 15 |
44 | 43 | imp 445 | . . . . . . . . . . . . . 14 |
45 | 44 | rexlimivw 3029 | . . . . . . . . . . . . 13 |
46 | 35, 45 | syl 17 | . . . . . . . . . . . 12 |
47 | 46 | impancom 456 | . . . . . . . . . . 11 |
48 | 47 | rexlimivw 3029 | . . . . . . . . . 10 |
49 | 34, 48 | syl 17 | . . . . . . . . 9 |
50 | 49 | expimpd 629 | . . . . . . . 8 |
51 | 50 | com12 32 | . . . . . . 7 |
52 | 32, 33, 51 | syl2an 494 | . . . . . 6 |
53 | 52 | an4s 869 | . . . . 5 |
54 | 53 | ralrimdvva 2974 | . . . 4 |
55 | 31, 54 | syl5bi 232 | . . 3 |
56 | 26, 55 | impbid 202 | . 2 |
57 | 6, 18, 56 | 3bitrd 294 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wa 384 w3o 1036 w3a 1037 wceq 1483 wcel 1990 wne 2794 wral 2912 wrex 2913 cun 3572 cin 3573 wss 3574 c0 3915 cfv 5888 cfi 8316 cfbas 19734 |
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-nel 2898 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-1o 7560 df-oadd 7564 df-er 7742 df-en 7956 df-fin 7959 df-fi 8317 df-fbas 19743 |
This theorem is referenced by: isufil2 21712 ufileu 21723 filufint 21724 fmfnfm 21762 hausflim 21785 flimclslem 21788 fclsfnflim 21831 flimfnfcls 21832 |
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