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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 2235 | . 2 ⊢ 𝐵 = 𝐴 |
| 4 | 1, 3 | eqtr2di 2281 | 1 ⊢ (𝜑 → 𝐴 = 𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 |
| 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 1495 ax-gen 1497 ax-4 1558 ax-17 1574 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-cleq 2224 |
| This theorem is referenced by: iftrue 3610 iffalse 3613 difprsn1 3812 dmmptg 5234 relcoi1 5268 funimacnv 5406 dmmptd 5463 dffv3g 5635 dfimafn 5694 fvco2 5715 isoini 5959 iotaexel 5976 fvmpopr2d 6158 oprabco 6382 ixpconstg 6876 unfiexmid 7110 undifdc 7116 sbthlemi4 7159 sbthlemi5 7160 sbthlemi6 7161 supval2ti 7194 exmidfodomrlemim 7412 suplocexprlemex 7942 eqneg 8912 zeo 9585 fseq1p1m1 10329 seq3val 10723 seqvalcd 10724 hashfzo 11087 hashxp 11091 wrdval 11117 wrdnval 11145 swrdccat3blem 11321 fsumconst 12017 modfsummod 12021 telfsumo 12029 fprodconst 12183 mulgcd 12589 algcvg 12622 phiprmpw 12796 phisum 12815 strslfv3 13130 resseqnbasd 13158 pwssnf1o 13383 imasplusg 13393 imasmulr 13394 ismgmid 13462 pws0g 13536 dfrhm2 14171 subrg1 14248 2idlbas 14532 psrbagfi 14690 psrlinv 14701 mplbascoe 14708 mplplusgg 14720 uptx 15001 resubmet 15283 ply1termlem 15469 lgsval4lem 15743 lgsquadlem2 15810 m1lgs 15817 uspgrf1oedg 16030 gsumgfsumlem 16704 |
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