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| Description: An inference from three chained equalities. |
| Ref | Expression |
|---|---|
| 3eqtri.1 |
|
| 3eqtri.2 |
|
| 3eqtri.3 |
|
| Ref | Expression |
|---|---|
| 3eqtri |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3eqtri.1 |
. 2
| |
| 2 | 3eqtri.2 |
. . 3
| |
| 3 | 3eqtri.3 |
. . 3
| |
| 4 | 2, 3 | eqtri 1538 |
. 2
|
| 5 | 1, 4 | eqtri 1538 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: csbid 2056 dfrab2 2326 difin0 2391 undifv 2392 undif1 2393 undif2 2394 inundif 2395 difun2 2396 difdifdir 2400 pwpr 2567 unisn 2583 intsn 2631 iunid 2671 2iunin 2680 unidif0 2813 uniop 2885 dfid3 2914 suc0 3047 unisuc 3049 op1stb 3136 orduniss2 3187 xpun 3312 dfrn2 3394 dfdmf 3397 dfrnf 3435 res0 3458 resres 3464 resopab 3485 dfima2 3497 imai 3509 ima0 3512 imaundir 3546 resdisj 3556 rnsnop 3582 dmresv 3588 rescnvcnv 3591 resdmres 3595 dfco2a 3599 dmco 3607 fvsnun1 3907 fvsnun2 3908 fopabap 3955 dmoprab 4062 rnoprab 4064 oprabval6g 4093 1st0 4144 2nd0 4145 curry1 4193 curry2 4196 fparlem1 4199 fparlem3 4201 fparlem4 4202 fpar 4203 tfrlem8 4219 tz7.44-1 4229 df2o2 4277 ecid 4441 qsid 4442 sbthlem5 4596 dfsdom2 4605 mapenlem2 4637 rankpr 4838 rankop 4839 ranksuc 4846 scottexs 4864 scott0s 4865 hta 4874 kmlem3 4913 cda0en 5077 supsrlem2 5380 axmulass 5432 axi2m1 5439 negsubi 5535 mulneg1i 5599 mulneg2i 5600 mul2negi 5601 negsubdi2i 5604 ltsubaddi 5748 ltnegi 5757 divreci 5883 div23i 5894 rec11ii 5916 prodgt0lem 5958 nnsubi 6102 2p2e4 6147 3t3e9 6170 8th4div3 6177 seq11lem 6680 seq0seqz 6737 seq00 6745 cu2 6837 binom2i 6841 binom2aiOLD 6842 discrlem1 6857 nnesqi 6863 sqr0 6873 sqrlem11 6884 sqrlem16 6889 i3 6934 i4 6935 crulem 6937 crmuli 6941 crreczi 6942 cjcji 6979 addcji 6999 absi 7081 abslem2i 7111 fac1 7138 fac2 7140 fac3 7141 bcpasc2i 7170 binomlem6 7274 iserzshfti 7347 arisumi 7430 geolim1i 7443 0.999... 7451 eval 7514 erelem6 7529 ege2lem2 7533 ege2le3lem2 7534 efcji 7541 efaddlem6 7548 efaddlem16 7558 eirrlem1 7594 eft0vali 7606 ef4pi 7607 efge1pi 7610 sin0 7652 cos0 7654 sinaddi 7659 cosaddi 7660 sin01bndlem1 7676 acdc2lem2 7701 acdc5lem2 7704 ruclem6 7727 ruclem12 7733 ruclem15 7736 infmap2lem1 7791 subtop 7858 indistps 7863 remetba 8120 grpidvallem 8274 vsfval 8501 nvpi 8541 ipval2 8611 ip0i 8740 ip1ilem 8741 ip2i 8743 ipdirilem 8744 ipasslem10 8755 spwval2 8915 pilem3 8940 eulerid 8950 sin2pi 8951 cos2pi 8952 sincosq4sgn 8974 sincos6thpi 8979 dfrelog 9028 pilog 9040 hvnegdii 9204 hvsubeq0i 9205 hvsubcan2i 9206 hvaddcani 9207 hvsubaddi 9208 hisubcomi 9246 normlem0 9251 normlem1 9252 normlem3 9254 normlem9 9260 bcseqi 9262 norm0 9271 norm-ii.i 9280 normsubi 9284 norm3difi 9290 normpari 9297 normpar2i 9299 polid2i 9300 hhshsslem1 9413 projlem3 9464 projlem4 9465 pjthlem5 9499 pjthlem13 9507 shs0i 9648 chj0i 9654 pjoml2i 9804 osumcor2i 9868 pjsslem 9902 pjssmii 9904 ho0subi 10001 hoaddsubi 10027 hosd1i 10028 hopncani 10030 hosubeq0i 10032 hhbloi 10108 hh0oi 10109 nmop0 10189 nmfn0 10190 lnopunilem1 10214 lnophmlem2 10221 pjclem1 10404 pjcmmul1i 10410 cvmdi 10532 mdexchi 10543 atabsi 10610 dmdbr6ati 10632 symgval 10688 cmpbva 10748 cmpran 10753 prj1 10809 inpc 10867 inposet 10868 domncnt 10872 ranncnt 10873 empos 10875 dispos 10881 stoiglem 11063 intopcon 11133 singempcon 11134 stoi 11145 trnij 11160 1cat 11213 subcld 11480 filcon 11665 gapm 11784 fsumltisumi 11886 trirni 11896 piececn 11955 tx1cn 11976 tx2cn 11977 bfplem2 12055 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-gen 999 ax-17 1007 ax-4 1009 ax-5o 1011 ax-ext 1500 |
| This theorem depends on definitions: df-bi 145 df-an 223 df-cleq 1511 |