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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 2274 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) |
| 4 | 3eqtr2d.3 | . 2 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 5 | 3, 4 | eqtrd 2271 | 1 ⊢ (𝜑 → 𝐴 = 𝐷) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1402 |
| 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 1500 ax-gen 1502 ax-4 1563 ax-17 1579 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is referenced by: fmptapd 5900 rdgisucinc 6649 ctm 7442 mulidnq 7749 ltrnqg 7780 recexprlem1ssl 7993 recexprlem1ssu 7994 ltmprr 8002 mulcmpblnrlemg 8100 caucvgsrlemoffcau 8158 negsub 8567 neg2sub 8579 divmuleqap 9040 divneg2ap 9059 qapne 10021 seqvalcd 10879 binom2 11069 bcpasc 11185 hashf1lem2 11267 cats2catd 11522 crim 11604 remullem 11617 max0addsup 11966 summodclem2a 12129 isum1p 12240 geo2sum 12262 cvgratz 12280 efi4p 12465 tanaddap 12487 addcos 12494 cos2tsin 12499 demoivreALT 12522 omeo 12646 sqgcd 12787 eulerthlemth 12991 pythagtriplem16 13039 fldivp1 13108 pockthlem 13116 4sqlem10 13147 ballotfilemscr 13243 ballotfilemfrci 13252 ballotfilemfrceq 13253 gzsumval2 13694 grpinvid2 13838 imasgrp2 13893 mulgaddcomlem 13928 mulgmodid 13944 ablsubsub 14102 ablsubsub4 14103 gzsumsnfd 14127 opprunitd 14393 lmodfopne 14638 mpl0fi 15019 mplnegfi 15022 txrest 15303 limccnpcntop 15702 dvrecap 15740 dvply1 15792 cosq34lt1 15877 wilthlem1 16011 mersenne 16028 lgseisenlem1 16106 lgsquadlem1 16113 lgsquadlem2 16114 lgsquadlem3 16115 lgsquad2lem1 16117 2lgslem1 16127 qdiff 17006 |
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