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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 2255 | . 2 ⊢ 𝐵 = 𝐷 |
| 5 | 1, 4 | eqtri 2255 | 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 2216 |
| This theorem depends on definitions: df-bi 117 df-cleq 2227 |
| This theorem is referenced by: csbid 3149 un23 3382 in32 3437 dfrab2 3500 difun2 3593 if0ab 3627 tpidm23 3797 unisn 3935 dfiunv2 4032 uniop 4377 suc0 4537 unisuc 4539 iunsuc 4546 xpun 4816 dfrn2 4948 dfdmf 4954 dfrnf 5003 res0 5047 resres 5055 xpssres 5078 dfima2 5108 imai 5123 ima0 5126 imaundir 5181 xpima1 5214 xpima2m 5215 dmresv 5226 rescnvcnv 5230 dmtpop 5243 rnsnopg 5246 resdmres 5259 dmmpt 5263 dmco 5276 co01 5282 fpr 5871 fmptpr 5881 fvsnun2 5887 mpo0 6131 dmoprab 6142 rnoprab 6144 ov6g 6200 1st0 6351 2nd0 6352 dfmpo 6432 algrflem 6438 dftpos2 6505 tposoprab 6524 tposmpo 6525 tfrlem8 6562 frecsuc 6651 df2o3 6675 sbthlemi5 7244 sup00 7307 casedm 7390 djudm 7409 axi2m1 8206 2p2e4 9384 numsuc 9743 numsucc 9769 decmul10add 9798 5p5e10 9800 6p4e10 9801 7p3e10 9804 xnegmnf 10184 pnfaddmnf 10205 fz0tp 10481 fz0to3un2pr 10482 fzo0to2pr 10588 fzo0to3tp 10589 fzo0to42pr 10590 0tonninf 10829 1tonninf 10830 inftonninf 10831 sq4e2t8 11026 i4 11031 fac1 11119 fac3 11122 abs0 11772 absi 11773 trirecip 12216 geoihalfsum 12237 esum 12377 tan0 12446 ef01bndlem 12471 3dvds 12579 3dvdsdec 12580 3dvds2dec 12581 3lcm2e6woprm 12812 6lcm4e12 12813 gcdmodi 13148 karatsuba 13157 ballotfilem2 13176 ballotfilemth 13229 ennnfonelem1 13246 ndxarg 13323 setsfun 13335 setsfun0 13336 txbasval 15262 cnmpt1st 15283 cnmpt2nd 15284 dvmptidcn 15709 cos2pi 15799 tan4thpi 15836 sincos6thpi 15837 sqrt2cxp2logb9e3 15970 2lgslem3c 16098 2lgslem3d 16099 012of 16907 2o01f 16908 pwf1oexmid 16913 isomninnlem 16954 iswomninnlem 16974 ismkvnnlem 16977 |
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