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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 2267 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) |
| 4 | 3eqtr2d.3 | . 2 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 5 | 3, 4 | eqtrd 2264 | 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 2213 |
| This theorem depends on definitions: df-bi 117 df-cleq 2224 |
| This theorem is referenced by: fmptapd 5853 rdgisucinc 6594 ctm 7351 mulidnq 7652 ltrnqg 7683 recexprlem1ssl 7896 recexprlem1ssu 7897 ltmprr 7905 mulcmpblnrlemg 8003 caucvgsrlemoffcau 8061 negsub 8469 neg2sub 8481 divmuleqap 8939 divneg2ap 8958 qapne 9917 seqvalcd 10769 binom2 10959 bcpasc 11074 cats2catd 11399 crim 11481 remullem 11494 max0addsup 11842 summodclem2a 12005 isum1p 12116 geo2sum 12138 cvgratz 12156 efi4p 12341 tanaddap 12363 addcos 12370 cos2tsin 12375 demoivreALT 12398 omeo 12522 sqgcd 12663 eulerthlemth 12867 pythagtriplem16 12915 fldivp1 12984 pockthlem 12992 4sqlem10 13023 gsumval2 13543 grpinvid2 13699 imasgrp2 13760 mulgaddcomlem 13795 mulgmodid 13811 ablsubsub 13968 ablsubsub4 13969 gsumfzsnfd 13995 opprunitd 14188 lmodfopne 14405 mpl0fi 14786 mplnegfi 14789 txrest 15070 limccnpcntop 15469 dvrecap 15507 dvply1 15559 cosq34lt1 15644 wilthlem1 15777 mersenne 15794 lgseisenlem1 15872 lgsquadlem1 15879 lgsquadlem2 15880 lgsquadlem3 15881 lgsquad2lem1 15883 2lgslem1 15893 qdiff 16764 |
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