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Mirrors > Home > ILE Home > Th. List > fival | Unicode version |
Description: The set of all the finite intersections of the elements of . (Contributed by FL, 27-Apr-2008.) (Revised by Mario Carneiro, 24-Nov-2013.) |
Ref | Expression |
---|---|
fival |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-fi 6857 | . 2 | |
2 | pweq 3513 | . . . . 5 | |
3 | 2 | ineq1d 3276 | . . . 4 |
4 | 3 | rexeqdv 2633 | . . 3 |
5 | 4 | abbidv 2257 | . 2 |
6 | elex 2697 | . 2 | |
7 | simpr 109 | . . . . . . 7 | |
8 | elinel1 3262 | . . . . . . . . 9 | |
9 | 8 | elpwid 3521 | . . . . . . . 8 |
10 | eqvisset 2696 | . . . . . . . . . . . 12 | |
11 | intexr 4075 | . . . . . . . . . . . 12 | |
12 | 10, 11 | syl 14 | . . . . . . . . . . 11 |
13 | 12 | adantl 275 | . . . . . . . . . 10 |
14 | 13 | neneqd 2329 | . . . . . . . . 9 |
15 | elinel2 3263 | . . . . . . . . . . 11 | |
16 | 15 | adantr 274 | . . . . . . . . . 10 |
17 | fin0or 6780 | . . . . . . . . . . 11 | |
18 | 17 | orcomd 718 | . . . . . . . . . 10 |
19 | 16, 18 | syl 14 | . . . . . . . . 9 |
20 | 14, 19 | ecased 1327 | . . . . . . . 8 |
21 | intssuni2m 3795 | . . . . . . . 8 | |
22 | 9, 20, 21 | syl2an2r 584 | . . . . . . 7 |
23 | 7, 22 | eqsstrd 3133 | . . . . . 6 |
24 | velpw 3517 | . . . . . 6 | |
25 | 23, 24 | sylibr 133 | . . . . 5 |
26 | 25 | rexlimiva 2544 | . . . 4 |
27 | 26 | abssi 3172 | . . 3 |
28 | uniexg 4361 | . . . 4 | |
29 | 28 | pwexd 4105 | . . 3 |
30 | ssexg 4067 | . . 3 | |
31 | 27, 29, 30 | sylancr 410 | . 2 |
32 | 1, 5, 6, 31 | fvmptd3 5514 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wo 697 wceq 1331 wex 1468 wcel 1480 cab 2125 wne 2308 wrex 2417 cvv 2686 cin 3070 wss 3071 c0 3363 cpw 3510 cuni 3736 cint 3771 cfv 5123 cfn 6634 cfi 6856 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-nul 4054 ax-pow 4098 ax-pr 4131 ax-un 4355 ax-iinf 4502 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-ral 2421 df-rex 2422 df-v 2688 df-sbc 2910 df-csb 3004 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-nul 3364 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-int 3772 df-br 3930 df-opab 3990 df-mpt 3991 df-id 4215 df-suc 4293 df-iom 4505 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-res 4551 df-ima 4552 df-iota 5088 df-fun 5125 df-fn 5126 df-f 5127 df-f1 5128 df-fo 5129 df-f1o 5130 df-fv 5131 df-er 6429 df-en 6635 df-fin 6637 df-fi 6857 |
This theorem is referenced by: elfi 6859 fi0 6863 |
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