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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 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 2213 |
| This theorem depends on definitions: df-bi 117 df-cleq 2224 |
| This theorem is referenced by: csbid 3136 un23 3368 in32 3421 dfrab2 3484 difun2 3576 if0ab 3610 tpidm23 3776 unisn 3914 dfiunv2 4011 uniop 4354 suc0 4514 unisuc 4516 iunsuc 4523 xpun 4793 dfrn2 4924 dfdmf 4930 dfrnf 4979 res0 5023 resres 5031 xpssres 5054 dfima2 5084 imai 5099 ima0 5102 imaundir 5157 xpima1 5190 xpima2m 5191 dmresv 5202 rescnvcnv 5206 dmtpop 5219 rnsnopg 5222 resdmres 5235 dmmpt 5239 dmco 5252 co01 5258 fpr 5844 fmptpr 5854 fvsnun2 5860 mpo0 6101 dmoprab 6112 rnoprab 6114 ov6g 6170 1st0 6316 2nd0 6317 dfmpo 6397 algrflem 6403 dftpos2 6470 tposoprab 6489 tposmpo 6490 tfrlem8 6527 frecsuc 6616 df2o3 6640 sbthlemi5 7203 sup00 7245 casedm 7328 djudm 7347 axi2m1 8138 2p2e4 9313 numsuc 9667 numsucc 9693 decmul10add 9722 5p5e10 9724 6p4e10 9725 7p3e10 9728 xnegmnf 10107 pnfaddmnf 10128 fz0tp 10400 fz0to3un2pr 10401 fzo0to2pr 10507 fzo0to3tp 10508 fzo0to42pr 10509 0tonninf 10746 1tonninf 10747 inftonninf 10748 sq4e2t8 10943 i4 10948 fac1 11035 fac3 11038 abs0 11679 absi 11680 trirecip 12123 geoihalfsum 12144 esum 12284 tan0 12353 ef01bndlem 12378 3dvds 12486 3dvdsdec 12487 3dvds2dec 12488 3lcm2e6woprm 12719 6lcm4e12 12720 gcdmodi 13055 karatsuba 13064 ennnfonelem1 13089 ndxarg 13166 setsfun 13178 setsfun0 13179 txbasval 15058 cnmpt1st 15079 cnmpt2nd 15080 dvmptidcn 15505 cos2pi 15595 tan4thpi 15632 sincos6thpi 15633 sqrt2cxp2logb9e3 15766 2lgslem3c 15894 2lgslem3d 15895 012of 16693 2o01f 16694 pwf1oexmid 16701 isomninnlem 16742 iswomninnlem 16762 ismkvnnlem 16765 |
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