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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 5845 rdgisucinc 6551 ctm 7308 mulidnq 7609 ltrnqg 7640 recexprlem1ssl 7853 recexprlem1ssu 7854 ltmprr 7862 mulcmpblnrlemg 7960 caucvgsrlemoffcau 8018 negsub 8427 neg2sub 8439 divmuleqap 8897 divneg2ap 8916 qapne 9873 seqvalcd 10724 binom2 10914 bcpasc 11029 cats2catd 11354 crim 11423 remullem 11436 max0addsup 11784 summodclem2a 11947 isum1p 12058 geo2sum 12080 cvgratz 12098 efi4p 12283 tanaddap 12305 addcos 12312 cos2tsin 12317 demoivreALT 12340 omeo 12464 sqgcd 12605 eulerthlemth 12809 pythagtriplem16 12857 fldivp1 12926 pockthlem 12934 4sqlem10 12965 gsumval2 13485 grpinvid2 13641 imasgrp2 13702 mulgaddcomlem 13737 mulgmodid 13753 ablsubsub 13910 ablsubsub4 13911 gsumfzsnfd 13937 opprunitd 14130 lmodfopne 14346 mpl0fi 14722 mplnegfi 14725 txrest 15006 limccnpcntop 15405 dvrecap 15443 dvply1 15495 cosq34lt1 15580 wilthlem1 15710 mersenne 15727 lgseisenlem1 15805 lgsquadlem1 15812 lgsquadlem2 15813 lgsquadlem3 15814 lgsquad2lem1 15816 2lgslem1 15826 qdiff 16679 |
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