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| Mirrors > Home > ILE Home > Th. List > 3eqtr2d | GIF version | ||
| Description: A deduction from three chained equalities. (Contributed by NM, 4-Aug-2006.) |
| Ref | Expression |
|---|---|
| 3eqtr2d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| 3eqtr2d.2 | ⊢ (𝜑 → 𝐶 = 𝐵) |
| 3eqtr2d.3 | ⊢ (𝜑 → 𝐶 = 𝐷) |
| Ref | Expression |
|---|---|
| 3eqtr2d | ⊢ (𝜑 → 𝐴 = 𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3eqtr2d.1 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | 3eqtr2d.2 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐵) | |
| 3 | 1, 2 | eqtr4d 2268 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) |
| 4 | 3eqtr2d.3 | . 2 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 5 | 3, 4 | eqtrd 2265 | 1 ⊢ (𝜑 → 𝐴 = 𝐷) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = 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 2214 |
| This theorem depends on definitions: df-bi 117 df-cleq 2225 |
| This theorem is referenced by: fmptapd 5875 rdgisucinc 6616 ctm 7400 mulidnq 7704 ltrnqg 7735 recexprlem1ssl 7948 recexprlem1ssu 7949 ltmprr 7957 mulcmpblnrlemg 8055 caucvgsrlemoffcau 8113 negsub 8521 neg2sub 8533 divmuleqap 8991 divneg2ap 9010 qapne 9971 seqvalcd 10823 binom2 11013 bcpasc 11128 cats2catd 11461 crim 11543 remullem 11556 max0addsup 11904 summodclem2a 12067 isum1p 12178 geo2sum 12200 cvgratz 12218 efi4p 12403 tanaddap 12425 addcos 12432 cos2tsin 12437 demoivreALT 12460 omeo 12584 sqgcd 12725 eulerthlemth 12929 pythagtriplem16 12977 fldivp1 13046 pockthlem 13054 4sqlem10 13085 gsumval2 13610 grpinvid2 13766 imasgrp2 13827 mulgaddcomlem 13862 mulgmodid 13878 ablsubsub 14035 ablsubsub4 14036 gsumfzsnfd 14062 opprunitd 14255 lmodfopne 14474 mpl0fi 14857 mplnegfi 14860 txrest 15141 limccnpcntop 15540 dvrecap 15578 dvply1 15630 cosq34lt1 15715 wilthlem1 15848 mersenne 15865 lgseisenlem1 15943 lgsquadlem1 15950 lgsquadlem2 15951 lgsquadlem3 15952 lgsquad2lem1 15954 2lgslem1 15964 qdiff 16833 |
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