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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 1397 |
| 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 1495 ax-gen 1497 ax-4 1558 ax-17 1574 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-cleq 2224 |
| This theorem is referenced by: fmptapd 5844 rdgisucinc 6550 ctm 7307 mulidnq 7608 ltrnqg 7639 recexprlem1ssl 7852 recexprlem1ssu 7853 ltmprr 7861 mulcmpblnrlemg 7959 caucvgsrlemoffcau 8017 negsub 8426 neg2sub 8438 divmuleqap 8896 divneg2ap 8915 qapne 9872 seqvalcd 10722 binom2 10912 bcpasc 11027 cats2catd 11349 crim 11418 remullem 11431 max0addsup 11779 summodclem2a 11941 isum1p 12052 geo2sum 12074 cvgratz 12092 efi4p 12277 tanaddap 12299 addcos 12306 cos2tsin 12311 demoivreALT 12334 omeo 12458 sqgcd 12599 eulerthlemth 12803 pythagtriplem16 12851 fldivp1 12920 pockthlem 12928 4sqlem10 12959 gsumval2 13479 grpinvid2 13635 imasgrp2 13696 mulgaddcomlem 13731 mulgmodid 13747 ablsubsub 13904 ablsubsub4 13905 gsumfzsnfd 13931 opprunitd 14123 lmodfopne 14339 mpl0fi 14715 mplnegfi 14718 txrest 14999 limccnpcntop 15398 dvrecap 15436 dvply1 15488 cosq34lt1 15573 wilthlem1 15703 mersenne 15720 lgseisenlem1 15798 lgsquadlem1 15805 lgsquadlem2 15806 lgsquadlem3 15807 lgsquad2lem1 15809 2lgslem1 15819 |
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