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| Mirrors > Home > MPE Home > Th. List > 3eqtr4ri | Structured version Visualization version GIF version | ||
| Description: An inference from three chained equalities. (Contributed by NM, 2-Sep-1995.) (Proof shortened by Andrew Salmon, 25-May-2011.) |
| Ref | Expression |
|---|---|
| 3eqtr4i.1 | ⊢ 𝐴 = 𝐵 |
| 3eqtr4i.2 | ⊢ 𝐶 = 𝐴 |
| 3eqtr4i.3 | ⊢ 𝐷 = 𝐵 |
| Ref | Expression |
|---|---|
| 3eqtr4ri | ⊢ 𝐷 = 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3eqtr4i.3 | . . 3 ⊢ 𝐷 = 𝐵 | |
| 2 | 3eqtr4i.1 | . . 3 ⊢ 𝐴 = 𝐵 | |
| 3 | 1, 2 | eqtr4i 2763 | . 2 ⊢ 𝐷 = 𝐴 |
| 4 | 3eqtr4i.2 | . 2 ⊢ 𝐶 = 𝐴 | |
| 5 | 3, 4 | eqtr4i 2763 | 1 ⊢ 𝐷 = 𝐶 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 |
| This theorem is referenced by: cbvreucsf 3882 dfin3 4218 dfsymdif3 4247 rabdif 4262 dfif6 4470 dfsn2ALT 4590 qdass 4698 tpidm12 4700 iinvdif 5023 unidif0 5295 csbcnv 5830 dfdm4 5842 dmun 5857 resres 5949 inres 5954 resdifcom 5955 resiun1 5956 imainrect 6137 cnvcnv 6148 coundi 6203 coundir 6204 funopg 6524 csbov 7403 elrnmpores 7496 offres 7927 1st2val 7961 2nd2val 7962 mpomptsx 8008 oeoalem 8523 omopthlem1 8586 snec 8716 tcsni 9651 infmap2 10128 ackbij2lem3 10151 itunisuc 10330 axmulass 11069 divmul13i 11905 dfnn3 12177 numsucc 12673 decbin2 12774 uzrdgxfr 13918 hashxplem 14384 prprrab 14424 ids1 14549 s3s4 14884 s2s5 14885 s5s2 14886 fsumadd 15691 fsum2d 15722 fprodmul 15914 bpoly3 16012 bezout 16501 oppchomf 17675 dfinito3 17961 dftermo3 17962 smndex1iidm 18858 symgbas 19336 oppr1 20319 opsrtoslem1 22042 m2detleiblem2 22602 txswaphmeolem 23778 cnfldnm 24752 cnrbas 25118 cnnm 25136 volres 25504 voliunlem1 25526 uniioombllem4 25562 itg11 25667 dfrelog 26545 log2ublem3 26929 bposlem8 27273 noinfbnd2 27714 addsasslem1 28014 bdaypw2n0bndlem 28474 uhgrspan1 29391 ip2i 30919 bcseqi 31211 hilnormi 31254 cmcmlem 31682 fh3i 31714 fh4i 31715 pjadjii 31765 resf1o 32823 dp3mul10 32977 dpmul4 32993 threehalves 32994 ressplusf 33043 cycpmconjs 33237 resvsca 33412 cos9thpiminplylem5 33951 xpinpreima 34071 cnre2csqima 34076 esum2dlem 34257 eulerpartgbij 34537 ballotth 34703 plymulx 34713 hgt750lem2 34817 elrn3 35965 itg2addnclem2 38004 dfsucmap3 38795 dfsucmap4 38797 dfcoss3 38836 cossid 38902 dfssr2 38911 dfpetparts2 39304 dfpeters2 39306 areaquad 43659 cnvrcl0 44067 stoweidlem13 46456 wallispi2 46516 fourierdlem96 46645 fourierdlem97 46646 fourierdlem98 46647 fourierdlem99 46648 fourierdlem113 46662 fourierswlem 46673 dfafv2 47577 dfnelbr2 47718 ceil5half3 47791 fmtnorec2 48003 fmtno5fac 48042 tposrescnv 49351 tposres3 49353 dfswapf2 49733 setrec2 50167 |
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