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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 2250 | . 2 ⊢ 𝐵 = 𝐷 |
| 5 | 1, 4 | eqtri 2250 | 1 ⊢ 𝐴 = 𝐷 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1395 |
| 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 1493 ax-gen 1495 ax-4 1556 ax-17 1572 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-cleq 2222 |
| This theorem is referenced by: csbid 3132 un23 3363 in32 3416 dfrab2 3479 difun2 3571 tpidm23 3767 unisn 3904 dfiunv2 4001 uniop 4343 suc0 4503 unisuc 4505 iunsuc 4512 xpun 4782 dfrn2 4913 dfdmf 4919 dfrnf 4968 res0 5012 resres 5020 xpssres 5043 dfima2 5073 imai 5087 ima0 5090 imaundir 5145 xpima1 5178 xpima2m 5179 dmresv 5190 rescnvcnv 5194 dmtpop 5207 rnsnopg 5210 resdmres 5223 dmmpt 5227 dmco 5240 co01 5246 fpr 5828 fmptpr 5838 fvsnun2 5844 mpo0 6083 dmoprab 6094 rnoprab 6096 ov6g 6152 1st0 6299 2nd0 6300 dfmpo 6380 algrflem 6386 dftpos2 6418 tposoprab 6437 tposmpo 6438 tfrlem8 6475 frecsuc 6564 df2o3 6588 sbthlemi5 7144 sup00 7186 casedm 7269 djudm 7288 axi2m1 8078 2p2e4 9253 numsuc 9607 numsucc 9633 decmul10add 9662 5p5e10 9664 6p4e10 9665 7p3e10 9668 xnegmnf 10042 pnfaddmnf 10063 fz0tp 10335 fz0to3un2pr 10336 fzo0to2pr 10441 fzo0to3tp 10442 fzo0to42pr 10443 0tonninf 10679 1tonninf 10680 inftonninf 10681 sq4e2t8 10876 i4 10881 fac1 10968 fac3 10971 abs0 11590 absi 11591 trirecip 12033 geoihalfsum 12054 esum 12194 tan0 12263 ef01bndlem 12288 3dvds 12396 3dvdsdec 12397 3dvds2dec 12398 3lcm2e6woprm 12629 6lcm4e12 12630 gcdmodi 12965 karatsuba 12974 ennnfonelem1 12999 ndxarg 13076 setsfun 13088 setsfun0 13089 txbasval 14962 cnmpt1st 14983 cnmpt2nd 14984 dvmptidcn 15409 cos2pi 15499 tan4thpi 15536 sincos6thpi 15537 sqrt2cxp2logb9e3 15670 2lgslem3c 15795 2lgslem3d 15796 012of 16470 2o01f 16471 pwf1oexmid 16478 isomninnlem 16512 iswomninnlem 16531 ismkvnnlem 16534 |
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