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Mirrors > Home > MPE Home > Th. List > xpfi | Structured version Visualization version Unicode version |
Description: The Cartesian product of two finite sets is finite. (Contributed by Jeff Madsen, 2-Sep-2009.) (Revised by Mario Carneiro, 12-Mar-2015.) |
Ref | Expression |
---|---|
xpfi |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xpeq1 5128 | . . . . 5 | |
2 | 1 | eleq1d 2686 | . . . 4 |
3 | 2 | imbi2d 330 | . . 3 |
4 | xpeq1 5128 | . . . . 5 | |
5 | 4 | eleq1d 2686 | . . . 4 |
6 | 5 | imbi2d 330 | . . 3 |
7 | xpeq1 5128 | . . . . 5 | |
8 | 7 | eleq1d 2686 | . . . 4 |
9 | 8 | imbi2d 330 | . . 3 |
10 | xpeq1 5128 | . . . . 5 | |
11 | 10 | eleq1d 2686 | . . . 4 |
12 | 11 | imbi2d 330 | . . 3 |
13 | 0xp 5199 | . . . . 5 | |
14 | 0fin 8188 | . . . . 5 | |
15 | 13, 14 | eqeltri 2697 | . . . 4 |
16 | 15 | a1i 11 | . . 3 |
17 | neq0 3930 | . . . . . . 7 | |
18 | sneq 4187 | . . . . . . . . . . . . . . . 16 | |
19 | 18 | difeq2d 3728 | . . . . . . . . . . . . . . 15 |
20 | 19 | xpeq1d 5138 | . . . . . . . . . . . . . 14 |
21 | 20 | eleq1d 2686 | . . . . . . . . . . . . 13 |
22 | 21 | imbi2d 330 | . . . . . . . . . . . 12 |
23 | 22 | rspcv 3305 | . . . . . . . . . . 11 |
24 | 23 | adantl 482 | . . . . . . . . . 10 |
25 | pm2.27 42 | . . . . . . . . . . 11 | |
26 | 25 | ad2antlr 763 | . . . . . . . . . 10 |
27 | snex 4908 | . . . . . . . . . . . . . . 15 | |
28 | xpexg 6960 | . . . . . . . . . . . . . . 15 | |
29 | 27, 28 | mpan 706 | . . . . . . . . . . . . . 14 |
30 | id 22 | . . . . . . . . . . . . . 14 | |
31 | vex 3203 | . . . . . . . . . . . . . . 15 | |
32 | 2ndconst 7266 | . . . . . . . . . . . . . . 15 | |
33 | 31, 32 | mp1i 13 | . . . . . . . . . . . . . 14 |
34 | f1oen2g 7972 | . . . . . . . . . . . . . 14 | |
35 | 29, 30, 33, 34 | syl3anc 1326 | . . . . . . . . . . . . 13 |
36 | enfii 8177 | . . . . . . . . . . . . 13 | |
37 | 35, 36 | mpdan 702 | . . . . . . . . . . . 12 |
38 | 37 | ad2antlr 763 | . . . . . . . . . . 11 |
39 | unfi 8227 | . . . . . . . . . . . 12 | |
40 | xpundir 5172 | . . . . . . . . . . . . . . . 16 | |
41 | difsnid 4341 | . . . . . . . . . . . . . . . . 17 | |
42 | 41 | xpeq1d 5138 | . . . . . . . . . . . . . . . 16 |
43 | 40, 42 | syl5eqr 2670 | . . . . . . . . . . . . . . 15 |
44 | 43 | eleq1d 2686 | . . . . . . . . . . . . . 14 |
45 | 44 | biimpd 219 | . . . . . . . . . . . . 13 |
46 | 45 | adantl 482 | . . . . . . . . . . . 12 |
47 | 39, 46 | syl5 34 | . . . . . . . . . . 11 |
48 | 38, 47 | mpan2d 710 | . . . . . . . . . 10 |
49 | 24, 26, 48 | 3syld 60 | . . . . . . . . 9 |
50 | 49 | ex 450 | . . . . . . . 8 |
51 | 50 | exlimdv 1861 | . . . . . . 7 |
52 | 17, 51 | syl5bi 232 | . . . . . 6 |
53 | xpeq1 5128 | . . . . . . . 8 | |
54 | 53, 15 | syl6eqel 2709 | . . . . . . 7 |
55 | 54 | a1d 25 | . . . . . 6 |
56 | 52, 55 | pm2.61d2 172 | . . . . 5 |
57 | 56 | ex 450 | . . . 4 |
58 | 57 | com23 86 | . . 3 |
59 | 3, 6, 9, 12, 16, 58 | findcard 8199 | . 2 |
60 | 59 | imp 445 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wa 384 wceq 1483 wex 1704 wcel 1990 wral 2912 cvv 3200 cdif 3571 cun 3572 c0 3915 csn 4177 class class class wbr 4653 cxp 5112 cres 5116 wf1o 5887 c2nd 7167 cen 7952 cfn 7955 |
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-1st 7168 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-1o 7560 df-oadd 7564 df-er 7742 df-en 7956 df-fin 7959 |
This theorem is referenced by: 3xpfi 8232 mapfi 8262 fsuppxpfi 8292 infxpenlem 8836 ackbij1lem9 9050 ackbij1lem10 9051 hashxplem 13220 hashmap 13222 fsum2dlem 14501 fsumcom2 14505 fsumcom2OLD 14506 ackbijnn 14560 fprod2dlem 14710 fprodcom2 14714 fprodcom2OLD 14715 rexpen 14957 crth 15483 phimullem 15484 prmreclem3 15622 ablfaclem3 18486 gsumdixp 18609 gsumbagdiag 19376 psrass1lem 19377 evlslem2 19512 frlmbas3 20115 mamudm 20194 mamufacex 20195 mamures 20196 gsumcom3fi 20206 mamucl 20207 mamudi 20209 mamudir 20210 mamuvs1 20211 mamuvs2 20212 matsca2 20226 matbas2 20227 matplusg2 20233 matvsca2 20234 matplusgcell 20239 matsubgcell 20240 matvscacell 20242 matgsum 20243 mamumat1cl 20245 mattposcl 20259 mdetrsca 20409 mdetunilem9 20426 pmatcoe1fsupp 20506 tsmsxplem1 21956 tsmsxplem2 21957 tsmsxp 21958 i1fadd 23462 i1fmul 23463 itg1addlem4 23466 fsumdvdsmul 24921 fsumvma 24938 lgsquadlem1 25105 lgsquadlem2 25106 lgsquadlem3 25107 relfi 29415 fsumiunle 29575 sibfof 30402 hgt750lemb 30734 erdszelem10 31182 matunitlindflem2 33406 matunitlindf 33407 poimirlem26 33435 poimirlem27 33436 poimirlem28 33437 cntotbnd 33595 pellex 37399 fourierdlem42 40366 etransclem44 40495 etransclem45 40496 etransclem47 40498 |
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