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Mirrors > Home > ILE Home > Th. List > 3eqtri | GIF version |
Description: An inference from three chained equalities. (Contributed by NM, 29-Aug-1993.) |
Ref | Expression |
---|---|
3eqtri.1 | ⊢ 𝐴 = 𝐵 |
3eqtri.2 | ⊢ 𝐵 = 𝐶 |
3eqtri.3 | ⊢ 𝐶 = 𝐷 |
Ref | Expression |
---|---|
3eqtri | ⊢ 𝐴 = 𝐷 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3eqtri.1 | . 2 ⊢ 𝐴 = 𝐵 | |
2 | 3eqtri.2 | . . 3 ⊢ 𝐵 = 𝐶 | |
3 | 3eqtri.3 | . . 3 ⊢ 𝐶 = 𝐷 | |
4 | 2, 3 | eqtri 2185 | . 2 ⊢ 𝐵 = 𝐷 |
5 | 1, 4 | eqtri 2185 | 1 ⊢ 𝐴 = 𝐷 |
Colors of variables: wff set class |
Syntax hints: = wceq 1342 |
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-5 1434 ax-gen 1436 ax-4 1497 ax-17 1513 ax-ext 2146 |
This theorem depends on definitions: df-bi 116 df-cleq 2157 |
This theorem is referenced by: csbid 3048 un23 3276 in32 3329 dfrab2 3392 difun2 3483 tpidm23 3671 unisn 3799 dfiunv2 3896 uniop 4227 suc0 4383 unisuc 4385 iunsuc 4392 xpun 4659 dfrn2 4786 dfdmf 4791 dfrnf 4839 res0 4882 resres 4890 xpssres 4913 dfima2 4942 imai 4954 ima0 4957 imaundir 5011 xpima1 5044 xpima2m 5045 dmresv 5056 rescnvcnv 5060 dmtpop 5073 rnsnopg 5076 resdmres 5089 dmmpt 5093 dmco 5106 co01 5112 fpr 5661 fmptpr 5671 fvsnun2 5677 mpo0 5903 dmoprab 5914 rnoprab 5916 ov6g 5970 1st0 6104 2nd0 6105 dfmpo 6182 algrflem 6188 dftpos2 6220 tposoprab 6239 tposmpo 6240 tfrlem8 6277 frecsuc 6366 df2o3 6389 sbthlemi5 6917 sup00 6959 casedm 7042 djudm 7061 axi2m1 7807 2p2e4 8975 numsuc 9326 numsucc 9352 decmul10add 9381 5p5e10 9383 6p4e10 9384 7p3e10 9387 xnegmnf 9756 pnfaddmnf 9777 fz0tp 10047 fz0to3un2pr 10048 fzo0to2pr 10143 fzo0to3tp 10144 fzo0to42pr 10145 0tonninf 10364 1tonninf 10365 inftonninf 10366 sq4e2t8 10542 i4 10547 fac1 10631 fac3 10634 abs0 10986 absi 10987 trirecip 11428 geoihalfsum 11449 esum 11589 tan0 11658 ef01bndlem 11683 3dvdsdec 11787 3dvds2dec 11788 3lcm2e6woprm 11997 6lcm4e12 11998 ennnfonelem1 12277 ndxarg 12354 setsfun 12366 setsfun0 12367 txbasval 12808 cnmpt1st 12829 cnmpt2nd 12830 dvmptidcn 13219 cos2pi 13266 tan4thpi 13303 sincos6thpi 13304 sqrt2cxp2logb9e3 13434 012of 13709 2o01f 13710 pwf1oexmid 13713 isomninnlem 13743 iswomninnlem 13762 ismkvnnlem 13765 |
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