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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 2265 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) |
| 4 | 3eqtr2d.3 | . 2 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 5 | 3, 4 | eqtrd 2262 | 1 ⊢ (𝜑 → 𝐴 = 𝐷) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = 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: fmptapd 5834 rdgisucinc 6537 ctm 7287 mulidnq 7587 ltrnqg 7618 recexprlem1ssl 7831 recexprlem1ssu 7832 ltmprr 7840 mulcmpblnrlemg 7938 caucvgsrlemoffcau 7996 negsub 8405 neg2sub 8417 divmuleqap 8875 divneg2ap 8894 qapne 9846 seqvalcd 10695 binom2 10885 bcpasc 11000 cats2catd 11316 crim 11384 remullem 11397 max0addsup 11745 summodclem2a 11907 isum1p 12018 geo2sum 12040 cvgratz 12058 efi4p 12243 tanaddap 12265 addcos 12272 cos2tsin 12277 demoivreALT 12300 omeo 12424 sqgcd 12565 eulerthlemth 12769 pythagtriplem16 12817 fldivp1 12886 pockthlem 12894 4sqlem10 12925 gsumval2 13445 grpinvid2 13601 imasgrp2 13662 mulgaddcomlem 13697 mulgmodid 13713 ablsubsub 13870 ablsubsub4 13871 gsumfzsnfd 13897 opprunitd 14089 lmodfopne 14305 mpl0fi 14681 mplnegfi 14684 txrest 14965 limccnpcntop 15364 dvrecap 15402 dvply1 15454 cosq34lt1 15539 wilthlem1 15669 mersenne 15686 lgseisenlem1 15764 lgsquadlem1 15771 lgsquadlem2 15772 lgsquadlem3 15773 lgsquad2lem1 15775 2lgslem1 15785 |
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