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Mirrors > Home > MPE Home > Th. List > fiin | Structured version Visualization version Unicode version |
Description: The elements of are closed under finite intersection. (Contributed by Mario Carneiro, 24-Nov-2013.) |
Ref | Expression |
---|---|
fiin |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfvex 6221 | . . . . . 6 | |
2 | elfi 8319 | . . . . . 6 | |
3 | 1, 2 | mpdan 702 | . . . . 5 |
4 | 3 | ibi 256 | . . . 4 |
5 | 4 | adantr 481 | . . 3 |
6 | simpr 477 | . . . 4 | |
7 | elfi 8319 | . . . . . 6 | |
8 | 7 | ancoms 469 | . . . . 5 |
9 | 1, 8 | sylan 488 | . . . 4 |
10 | 6, 9 | mpbid 222 | . . 3 |
11 | elin 3796 | . . . . . . . . 9 | |
12 | elin 3796 | . . . . . . . . 9 | |
13 | elpwi 4168 | . . . . . . . . . . . . . 14 | |
14 | elpwi 4168 | . . . . . . . . . . . . . 14 | |
15 | 13, 14 | anim12i 590 | . . . . . . . . . . . . 13 |
16 | unss 3787 | . . . . . . . . . . . . 13 | |
17 | 15, 16 | sylib 208 | . . . . . . . . . . . 12 |
18 | vex 3203 | . . . . . . . . . . . . . 14 | |
19 | vex 3203 | . . . . . . . . . . . . . 14 | |
20 | 18, 19 | unex 6956 | . . . . . . . . . . . . 13 |
21 | 20 | elpw 4164 | . . . . . . . . . . . 12 |
22 | 17, 21 | sylibr 224 | . . . . . . . . . . 11 |
23 | unfi 8227 | . . . . . . . . . . 11 | |
24 | 22, 23 | anim12i 590 | . . . . . . . . . 10 |
25 | 24 | an4s 869 | . . . . . . . . 9 |
26 | 11, 12, 25 | syl2anb 496 | . . . . . . . 8 |
27 | elin 3796 | . . . . . . . 8 | |
28 | 26, 27 | sylibr 224 | . . . . . . 7 |
29 | ineq12 3809 | . . . . . . . 8 | |
30 | intun 4509 | . . . . . . . 8 | |
31 | 29, 30 | syl6eqr 2674 | . . . . . . 7 |
32 | inteq 4478 | . . . . . . . . 9 | |
33 | 32 | eqeq2d 2632 | . . . . . . . 8 |
34 | 33 | rspcev 3309 | . . . . . . 7 |
35 | 28, 31, 34 | syl2an 494 | . . . . . 6 |
36 | 35 | an4s 869 | . . . . 5 |
37 | 36 | rexlimdvaa 3032 | . . . 4 |
38 | 37 | rexlimiva 3028 | . . 3 |
39 | 5, 10, 38 | sylc 65 | . 2 |
40 | inex1g 4801 | . . . 4 | |
41 | elfi 8319 | . . . 4 | |
42 | 40, 1, 41 | syl2anc 693 | . . 3 |
43 | 42 | adantr 481 | . 2 |
44 | 39, 43 | mpbird 247 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wceq 1483 wcel 1990 wrex 2913 cvv 3200 cun 3572 cin 3573 wss 3574 cpw 4158 cint 4475 cfv 5888 cfn 7955 cfi 8316 |
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-fin 7959 df-fi 8317 |
This theorem is referenced by: dffi2 8329 inficl 8331 elfiun 8336 dffi3 8337 fibas 20781 ordtbas2 20995 fsubbas 21671 |
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