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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 2259 | . 2 ⊢ 𝐵 = 𝐷 |
| 5 | 1, 4 | eqtri 2259 | 1 ⊢ 𝐴 = 𝐷 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1402 |
| 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 1500 ax-gen 1502 ax-4 1563 ax-17 1579 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is referenced by: csbid 3155 un23 3388 in32 3443 dfrab2 3508 dfnul4 3522 difun2 3607 if0ab 3641 tpidm23 3811 unisn 3949 dfiunv2 4046 uniop 4394 suc0 4554 unisuc 4556 iunsuc 4563 xpun 4834 dfrn2 4966 dfdmf 4972 dfrnf 5021 res0 5065 resres 5073 xpssres 5096 dfima2 5126 imai 5141 ima0 5144 imaundir 5199 xpima1 5232 xpima2m 5233 dmresv 5244 rescnvcnv 5248 dmtpop 5261 rnsnopg 5264 resdmres 5277 dmmpt 5281 dmco 5294 co01 5300 fpr 5891 fmptpr 5901 fvsnun2 5907 mpo0 6152 dmoprab 6163 rnoprab 6165 ov6g 6221 1st0 6372 2nd0 6373 dfmpo 6453 algrflem 6459 dftpos2 6526 tposoprab 6545 tposmpo 6546 tfrlem8 6583 frecsuc 6672 df2o3 6696 sbthlemi5 7272 sup00 7337 casedm 7420 djudm 7439 axi2m1 8236 2p2e4 9414 numsuc 9773 numsucc 9799 decmul10add 9828 5p5e10 9830 6p4e10 9831 7p3e10 9834 xnegmnf 10214 pnfaddmnf 10235 fz0tp 10512 fz0to3un2pr 10513 fzo0to2pr 10619 fzo0to3tp 10620 fzo0to42pr 10621 0tonninf 10860 1tonninf 10861 inftonninf 10862 sq4e2t8 11057 i4 11062 fac1 11150 fac3 11153 abs0 11807 absi 11808 trirecip 12251 geoihalfsum 12272 esum 12412 tan0 12481 ef01bndlem 12506 3dvds 12614 3dvdsdec 12615 3dvds2dec 12616 3lcm2e6woprm 12847 6lcm4e12 12848 gcdmodi 13183 karatsuba 13192 ballotfilem2 13211 ballotfilemth 13264 ennnfonelem1 13281 ndxarg 13358 setsfun 13370 setsfun0 13371 txbasval 15351 cnmpt1st 15372 cnmpt2nd 15373 dvmptidcn 15798 cos2pi 15888 tan4thpi 15925 sincos6thpi 15926 sqrt2cxp2logb9e3 16060 log2ublem2 16067 log2ublem3 16068 birthdaylog2 16073 2lgslem3c 16197 2lgslem3d 16198 012of 17006 2o01f 17007 pwf1oexmid 17012 isomninnlem 17053 iswomninnlem 17073 ismkvnnlem 17076 |
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