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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 3903 dfiunv2 4000 uniop 4341 suc0 4501 unisuc 4503 iunsuc 4510 xpun 4779 dfrn2 4909 dfdmf 4915 dfrnf 4964 res0 5008 resres 5016 xpssres 5039 dfima2 5069 imai 5083 ima0 5086 imaundir 5141 xpima1 5174 xpima2m 5175 dmresv 5186 rescnvcnv 5190 dmtpop 5203 rnsnopg 5206 resdmres 5219 dmmpt 5223 dmco 5236 co01 5242 fpr 5820 fmptpr 5830 fvsnun2 5836 mpo0 6073 dmoprab 6084 rnoprab 6086 ov6g 6142 1st0 6288 2nd0 6289 dfmpo 6367 algrflem 6373 dftpos2 6405 tposoprab 6424 tposmpo 6425 tfrlem8 6462 frecsuc 6551 df2o3 6574 sbthlemi5 7124 sup00 7166 casedm 7249 djudm 7268 axi2m1 8058 2p2e4 9233 numsuc 9587 numsucc 9613 decmul10add 9642 5p5e10 9644 6p4e10 9645 7p3e10 9648 xnegmnf 10021 pnfaddmnf 10042 fz0tp 10314 fz0to3un2pr 10315 fzo0to2pr 10419 fzo0to3tp 10420 fzo0to42pr 10421 0tonninf 10657 1tonninf 10658 inftonninf 10659 sq4e2t8 10854 i4 10859 fac1 10946 fac3 10949 abs0 11564 absi 11565 trirecip 12007 geoihalfsum 12028 esum 12168 tan0 12237 ef01bndlem 12262 3dvds 12370 3dvdsdec 12371 3dvds2dec 12372 3lcm2e6woprm 12603 6lcm4e12 12604 gcdmodi 12939 karatsuba 12948 ennnfonelem1 12973 ndxarg 13050 setsfun 13062 setsfun0 13063 txbasval 14935 cnmpt1st 14956 cnmpt2nd 14957 dvmptidcn 15382 cos2pi 15472 tan4thpi 15509 sincos6thpi 15510 sqrt2cxp2logb9e3 15643 2lgslem3c 15768 2lgslem3d 15769 012of 16316 2o01f 16317 pwf1oexmid 16324 isomninnlem 16357 iswomninnlem 16376 ismkvnnlem 16379 |
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