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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 2253 | . 2 ⊢ 𝐵 = 𝐷 |
| 5 | 1, 4 | eqtri 2253 | 1 ⊢ 𝐴 = 𝐷 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1398 |
| 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 1496 ax-gen 1498 ax-4 1559 ax-17 1575 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-cleq 2225 |
| This theorem is referenced by: csbid 3145 un23 3377 in32 3432 dfrab2 3495 difun2 3588 if0ab 3622 tpidm23 3791 unisn 3929 dfiunv2 4026 uniop 4371 suc0 4531 unisuc 4533 iunsuc 4540 xpun 4810 dfrn2 4942 dfdmf 4948 dfrnf 4997 res0 5041 resres 5049 xpssres 5072 dfima2 5102 imai 5117 ima0 5120 imaundir 5175 xpima1 5208 xpima2m 5209 dmresv 5220 rescnvcnv 5224 dmtpop 5237 rnsnopg 5240 resdmres 5253 dmmpt 5257 dmco 5270 co01 5276 fpr 5865 fmptpr 5875 fvsnun2 5881 mpo0 6122 dmoprab 6133 rnoprab 6135 ov6g 6191 1st0 6337 2nd0 6338 dfmpo 6418 algrflem 6424 dftpos2 6491 tposoprab 6510 tposmpo 6511 tfrlem8 6548 frecsuc 6637 df2o3 6661 sbthlemi5 7230 sup00 7293 casedm 7376 djudm 7395 axi2m1 8189 2p2e4 9363 numsuc 9721 numsucc 9747 decmul10add 9776 5p5e10 9778 6p4e10 9779 7p3e10 9782 xnegmnf 10161 pnfaddmnf 10182 fz0tp 10455 fz0to3un2pr 10456 fzo0to2pr 10562 fzo0to3tp 10563 fzo0to42pr 10564 0tonninf 10801 1tonninf 10802 inftonninf 10803 sq4e2t8 10998 i4 11003 fac1 11090 fac3 11093 abs0 11739 absi 11740 trirecip 12183 geoihalfsum 12204 esum 12344 tan0 12413 ef01bndlem 12438 3dvds 12546 3dvdsdec 12547 3dvds2dec 12548 3lcm2e6woprm 12779 6lcm4e12 12780 gcdmodi 13115 karatsuba 13124 ennnfonelem1 13150 ndxarg 13227 setsfun 13239 setsfun0 13240 txbasval 15124 cnmpt1st 15145 cnmpt2nd 15146 dvmptidcn 15571 cos2pi 15661 tan4thpi 15698 sincos6thpi 15699 sqrt2cxp2logb9e3 15832 2lgslem3c 15960 2lgslem3d 15961 012of 16759 2o01f 16760 pwf1oexmid 16765 isomninnlem 16806 iswomninnlem 16826 ismkvnnlem 16829 |
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