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Mirrors > Home > MPE Home > Th. List > fgss2 | Structured version Visualization version Unicode version |
Description: A condition for a filter to be finer than another involving their filter bases. (Contributed by Jeff Hankins, 3-Sep-2009.) (Revised by Stefan O'Rear, 2-Aug-2015.) |
Ref | Expression |
---|---|
fgss2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssfg 21676 | . . . . . 6 | |
2 | 1 | adantr 481 | . . . . 5 |
3 | 2 | sseld 3602 | . . . 4 |
4 | ssel2 3598 | . . . . . 6 | |
5 | elfg 21675 | . . . . . . . 8 | |
6 | simpr 477 | . . . . . . . 8 | |
7 | 5, 6 | syl6bi 243 | . . . . . . 7 |
8 | 7 | adantl 482 | . . . . . 6 |
9 | 4, 8 | syl5 34 | . . . . 5 |
10 | 9 | expd 452 | . . . 4 |
11 | 3, 10 | syl5d 73 | . . 3 |
12 | 11 | ralrimdv 2968 | . 2 |
13 | sseq2 3627 | . . . . . . . . . . . . 13 | |
14 | 13 | rexbidv 3052 | . . . . . . . . . . . 12 |
15 | 14 | rspcv 3305 | . . . . . . . . . . 11 |
16 | 15 | adantl 482 | . . . . . . . . . 10 |
17 | sstr 3611 | . . . . . . . . . . . . . 14 | |
18 | sseq1 3626 | . . . . . . . . . . . . . . . . 17 | |
19 | 18 | rspcev 3309 | . . . . . . . . . . . . . . . 16 |
20 | 19 | adantl 482 | . . . . . . . . . . . . . . 15 |
21 | 20 | a1d 25 | . . . . . . . . . . . . . 14 |
22 | 17, 21 | sylanr2 685 | . . . . . . . . . . . . 13 |
23 | 22 | ancld 576 | . . . . . . . . . . . 12 |
24 | 23 | exp45 642 | . . . . . . . . . . 11 |
25 | 24 | rexlimdv 3030 | . . . . . . . . . 10 |
26 | 16, 25 | syld 47 | . . . . . . . . 9 |
27 | 26 | impancom 456 | . . . . . . . 8 |
28 | 27 | rexlimdv 3030 | . . . . . . 7 |
29 | 28 | com23 86 | . . . . . 6 |
30 | 29 | impd 447 | . . . . 5 |
31 | elfg 21675 | . . . . . . 7 | |
32 | 31 | adantr 481 | . . . . . 6 |
33 | 32 | adantr 481 | . . . . 5 |
34 | elfg 21675 | . . . . . . 7 | |
35 | 34 | adantl 482 | . . . . . 6 |
36 | 35 | adantr 481 | . . . . 5 |
37 | 30, 33, 36 | 3imtr4d 283 | . . . 4 |
38 | 37 | ssrdv 3609 | . . 3 |
39 | 38 | ex 450 | . 2 |
40 | 12, 39 | impbid 202 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wcel 1990 wral 2912 wrex 2913 wss 3574 cfv 5888 (class class class)co 6650 cfbas 19734 cfg 19735 |
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 |
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-nel 2898 df-ral 2917 df-rex 2918 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-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 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-iota 5851 df-fun 5890 df-fv 5896 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-fbas 19743 df-fg 19744 |
This theorem is referenced by: (None) |
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