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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 2252 | . 2 ⊢ 𝐵 = 𝐷 |
| 5 | 1, 4 | eqtri 2252 | 1 ⊢ 𝐴 = 𝐷 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1397 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1495 ax-gen 1497 ax-4 1558 ax-17 1574 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-cleq 2224 |
| This theorem is referenced by: csbid 3135 un23 3366 in32 3419 dfrab2 3482 difun2 3574 tpidm23 3772 unisn 3909 dfiunv2 4006 uniop 4348 suc0 4508 unisuc 4510 iunsuc 4517 xpun 4787 dfrn2 4918 dfdmf 4924 dfrnf 4973 res0 5017 resres 5025 xpssres 5048 dfima2 5078 imai 5092 ima0 5095 imaundir 5150 xpima1 5183 xpima2m 5184 dmresv 5195 rescnvcnv 5199 dmtpop 5212 rnsnopg 5215 resdmres 5228 dmmpt 5232 dmco 5245 co01 5251 fpr 5836 fmptpr 5846 fvsnun2 5852 mpo0 6091 dmoprab 6102 rnoprab 6104 ov6g 6160 1st0 6307 2nd0 6308 dfmpo 6388 algrflem 6394 dftpos2 6427 tposoprab 6446 tposmpo 6447 tfrlem8 6484 frecsuc 6573 df2o3 6597 sbthlemi5 7160 sup00 7202 casedm 7285 djudm 7304 axi2m1 8095 2p2e4 9270 numsuc 9624 numsucc 9650 decmul10add 9679 5p5e10 9681 6p4e10 9682 7p3e10 9685 xnegmnf 10064 pnfaddmnf 10085 fz0tp 10357 fz0to3un2pr 10358 fzo0to2pr 10464 fzo0to3tp 10465 fzo0to42pr 10466 0tonninf 10703 1tonninf 10704 inftonninf 10705 sq4e2t8 10900 i4 10905 fac1 10992 fac3 10995 abs0 11623 absi 11624 trirecip 12067 geoihalfsum 12088 esum 12228 tan0 12297 ef01bndlem 12322 3dvds 12430 3dvdsdec 12431 3dvds2dec 12432 3lcm2e6woprm 12663 6lcm4e12 12664 gcdmodi 12999 karatsuba 13008 ennnfonelem1 13033 ndxarg 13110 setsfun 13122 setsfun0 13123 txbasval 14997 cnmpt1st 15018 cnmpt2nd 15019 dvmptidcn 15444 cos2pi 15534 tan4thpi 15571 sincos6thpi 15572 sqrt2cxp2logb9e3 15705 2lgslem3c 15830 2lgslem3d 15831 012of 16618 2o01f 16619 pwf1oexmid 16626 isomninnlem 16660 iswomninnlem 16679 ismkvnnlem 16682 |
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