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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 5840 rdgisucinc 6546 ctm 7299 mulidnq 7599 ltrnqg 7630 recexprlem1ssl 7843 recexprlem1ssu 7844 ltmprr 7852 mulcmpblnrlemg 7950 caucvgsrlemoffcau 8008 negsub 8417 neg2sub 8429 divmuleqap 8887 divneg2ap 8906 qapne 9863 seqvalcd 10713 binom2 10903 bcpasc 11018 cats2catd 11340 crim 11409 remullem 11422 max0addsup 11770 summodclem2a 11932 isum1p 12043 geo2sum 12065 cvgratz 12083 efi4p 12268 tanaddap 12290 addcos 12297 cos2tsin 12302 demoivreALT 12325 omeo 12449 sqgcd 12590 eulerthlemth 12794 pythagtriplem16 12842 fldivp1 12911 pockthlem 12919 4sqlem10 12950 gsumval2 13470 grpinvid2 13626 imasgrp2 13687 mulgaddcomlem 13722 mulgmodid 13738 ablsubsub 13895 ablsubsub4 13896 gsumfzsnfd 13922 opprunitd 14114 lmodfopne 14330 mpl0fi 14706 mplnegfi 14709 txrest 14990 limccnpcntop 15389 dvrecap 15427 dvply1 15479 cosq34lt1 15564 wilthlem1 15694 mersenne 15711 lgseisenlem1 15789 lgsquadlem1 15796 lgsquadlem2 15797 lgsquadlem3 15798 lgsquad2lem1 15800 2lgslem1 15810 |
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