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| Mirrors > Home > ILE Home > Th. List > eqtr4id | GIF version | ||
| Description: An equality transitivity deduction. (Contributed by NM, 29-Mar-1998.) |
| Ref | Expression |
|---|---|
| eqtr4id.2 | ⊢ 𝐴 = 𝐵 |
| eqtr4id.1 | ⊢ (𝜑 → 𝐶 = 𝐵) |
| Ref | Expression |
|---|---|
| eqtr4id | ⊢ (𝜑 → 𝐴 = 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqtr4id.1 | . 2 ⊢ (𝜑 → 𝐶 = 𝐵) | |
| 2 | eqtr4id.2 | . . 3 ⊢ 𝐴 = 𝐵 | |
| 3 | 2 | eqcomi 2242 | . 2 ⊢ 𝐵 = 𝐴 |
| 4 | 1, 3 | eqtr2di 2288 | 1 ⊢ (𝜑 → 𝐴 = 𝐶) |
| 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: iftrue 3645 iffalse 3648 difprsn1 3854 dmmptg 5288 relcoi1 5322 funimacnv 5460 dmmptd 5517 dffv3g 5694 dfimafn 5754 fvco2 5777 dfimafnf 5958 isoini 6027 iotaexel 6046 fvmpopr2d 6228 oprabco 6457 suppcofn 6510 ixpconstg 6994 unfiexmid 7230 undifdc 7236 sbthlemi4 7283 sbthlemi5 7284 sbthlemi6 7285 supval2ti 7342 exmidfodomrlemim 7560 suplocexprlemex 8096 eqneg 9071 zeo 9763 fseq1p1m1 10519 seq3val 10919 seqvalcd 10920 hashfzo 11286 hashxp 11290 hashfibclem 11305 wrdval 11330 wrdnval 11358 swrdccat3blem 11534 fsumconst 12247 modfsummod 12251 telfsumo 12259 fprodconst 12413 mulgcd 12819 algcvg 12852 phiprmpw 13030 phisum 13049 strslfv3 13457 resseqnbasd 13487 imasplusg 13689 imasmulr 13690 ismgmid 13757 gzsumshift 14240 pwssnf1o 14319 pws0g 14321 dfrhm2 14571 subrg1 14649 2idlbas 14962 rnascl 15144 psrbagfi 15168 psrlinv 15199 mplbascoe 15219 mplplusgg 15231 uptx 15512 resubmet 15794 ply1termlem 15980 birthdaylem1g 16237 birthdaylem2 16238 chtqub 16308 lgsval4lem 16347 lgsquadlem2 16414 m1lgs 16421 uspgrf1oedg 16634 |
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