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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 2238 | . 2 ⊢ 𝐵 = 𝐴 |
| 4 | 1, 3 | eqtr2di 2284 | 1 ⊢ (𝜑 → 𝐴 = 𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 |
| 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 1496 ax-gen 1498 ax-4 1559 ax-17 1575 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-cleq 2227 |
| This theorem is referenced by: iftrue 3631 iffalse 3634 difprsn1 3838 dmmptg 5265 relcoi1 5299 funimacnv 5437 dmmptd 5494 dffv3g 5671 dfimafn 5730 fvco2 5751 dfimafnf 5928 isoini 5997 iotaexel 6016 fvmpopr2d 6198 oprabco 6426 suppcofn 6479 ixpconstg 6955 unfiexmid 7191 undifdc 7197 sbthlemi4 7243 sbthlemi5 7244 sbthlemi6 7245 supval2ti 7299 exmidfodomrlemim 7517 suplocexprlemex 8053 eqneg 9026 zeo 9704 fseq1p1m1 10453 seq3val 10849 seqvalcd 10850 hashfzo 11215 hashxp 11219 hashfibclem 11234 wrdval 11255 wrdnval 11283 swrdccat3blem 11459 fsumconst 12168 modfsummod 12172 telfsumo 12180 fprodconst 12334 mulgcd 12740 algcvg 12773 phiprmpw 12947 phisum 12966 strslfv3 13345 resseqnbasd 13373 imasplusg 13575 imasmulr 13576 ismgmid 13643 gsumshift 14108 pwssnf1o 14156 pws0g 14158 dfrhm2 14402 subrg1 14480 2idlbas 14792 psrbagfi 14952 psrlinv 14968 mplbascoe 14975 mplplusgg 14987 uptx 15268 resubmet 15550 ply1termlem 15736 lgsval4lem 16013 lgsquadlem2 16080 m1lgs 16087 uspgrf1oedg 16300 |
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