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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 3133 un23 3364 in32 3417 dfrab2 3480 difun2 3572 tpidm23 3770 unisn 3907 dfiunv2 4004 uniop 4346 suc0 4506 unisuc 4508 iunsuc 4515 xpun 4785 dfrn2 4916 dfdmf 4922 dfrnf 4971 res0 5015 resres 5023 xpssres 5046 dfima2 5076 imai 5090 ima0 5093 imaundir 5148 xpima1 5181 xpima2m 5182 dmresv 5193 rescnvcnv 5197 dmtpop 5210 rnsnopg 5213 resdmres 5226 dmmpt 5230 dmco 5243 co01 5249 fpr 5831 fmptpr 5841 fvsnun2 5847 mpo0 6086 dmoprab 6097 rnoprab 6099 ov6g 6155 1st0 6302 2nd0 6303 dfmpo 6383 algrflem 6389 dftpos2 6422 tposoprab 6441 tposmpo 6442 tfrlem8 6479 frecsuc 6568 df2o3 6592 sbthlemi5 7154 sup00 7196 casedm 7279 djudm 7298 axi2m1 8088 2p2e4 9263 numsuc 9617 numsucc 9643 decmul10add 9672 5p5e10 9674 6p4e10 9675 7p3e10 9678 xnegmnf 10057 pnfaddmnf 10078 fz0tp 10350 fz0to3un2pr 10351 fzo0to2pr 10456 fzo0to3tp 10457 fzo0to42pr 10458 0tonninf 10695 1tonninf 10696 inftonninf 10697 sq4e2t8 10892 i4 10897 fac1 10984 fac3 10987 abs0 11612 absi 11613 trirecip 12055 geoihalfsum 12076 esum 12216 tan0 12285 ef01bndlem 12310 3dvds 12418 3dvdsdec 12419 3dvds2dec 12420 3lcm2e6woprm 12651 6lcm4e12 12652 gcdmodi 12987 karatsuba 12996 ennnfonelem1 13021 ndxarg 13098 setsfun 13110 setsfun0 13111 txbasval 14984 cnmpt1st 15005 cnmpt2nd 15006 dvmptidcn 15431 cos2pi 15521 tan4thpi 15558 sincos6thpi 15559 sqrt2cxp2logb9e3 15692 2lgslem3c 15817 2lgslem3d 15818 012of 16542 2o01f 16543 pwf1oexmid 16550 isomninnlem 16584 iswomninnlem 16603 ismkvnnlem 16606 |
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