| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 |
| This proof depends on 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 proof depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is used by: fmptapd 5909 rdgisucinc 6661 ctm 7455 mulidnq 7762 ltrnqg 7793 recexprlem1ssl 8006 recexprlem1ssu 8007 ltmprr 8015 mulcmpblnrlemg 8113 caucvgsrlemoffcau 8171 negsub 8581 neg2sub 8593 divmuleqap 9055 divneg2ap 9074 qapne 10054 seqvalcd 10918 binom2 11108 bcpasc 11225 hashf1lem2 11307 cats2catd 11562 crim 11644 remullem 11657 max0addsup 12007 summodclem2a 12172 isum1p 12283 geo2sum 12305 cvgratz 12323 efi4p 12508 tanaddap 12530 addcos 12537 cos2tsin 12542 demoivreALT 12565 omeo 12689 sqgcd 12830 eulerthlemth 13038 pythagtriplem16 13086 fldivp1 13155 pockthlem 13163 4sqlem10 13194 ballotfilemscr 13319 ballotfilemfrci 13328 ballotfilemfrceq 13329 gzsumval2 13772 grpinvid2 13916 imasgrp2 13971 mulgaddcomlem 14006 mulgmodid 14022 cntzsgrpcl 14166 cntzsubm 14169 ablsubsub 14211 ablsubsub4 14212 gzsumsnfd 14236 gsum2dfi 14272 opprunitd 14525 lmodfopne 14771 psrass1fi 15210 mpl0fi 15235 mplnegfi 15238 txrest 15519 limccnpcntop 15918 dvrecap 15956 dvply1 16008 cosq34lt1 16095 log2tlbndlog2 16237 birthdaylem2 16243 wilthlem1 16249 mersenne 16314 lgseisenlem1 16411 lgsquadlem1 16418 lgsquadlem2 16419 lgsquadlem3 16420 lgsquad2lem1 16422 2lgslem1 16432 qdiff 17322 |
| Copyright terms: Public domain | W3C validator |