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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 2233 | . 2 ⊢ 𝐵 = 𝐴 |
| 4 | 1, 3 | eqtr2di 2279 | 1 ⊢ (𝜑 → 𝐴 = 𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 |
| 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 1493 ax-gen 1495 ax-4 1556 ax-17 1572 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-cleq 2222 |
| This theorem is referenced by: iftrue 3607 iffalse 3610 difprsn1 3807 dmmptg 5226 relcoi1 5260 funimacnv 5397 dmmptd 5454 dffv3g 5625 dfimafn 5684 fvco2 5705 isoini 5948 iotaexel 5965 fvmpopr2d 6147 oprabco 6369 ixpconstg 6862 unfiexmid 7091 undifdc 7097 sbthlemi4 7138 sbthlemi5 7139 sbthlemi6 7140 supval2ti 7173 exmidfodomrlemim 7390 suplocexprlemex 7920 eqneg 8890 zeo 9563 fseq1p1m1 10302 seq3val 10694 seqvalcd 10695 hashfzo 11057 hashxp 11061 wrdval 11087 wrdnval 11115 swrdccat3blem 11287 fsumconst 11981 modfsummod 11985 telfsumo 11993 fprodconst 12147 mulgcd 12553 algcvg 12586 phiprmpw 12760 phisum 12779 strslfv3 13094 resseqnbasd 13122 pwssnf1o 13347 imasplusg 13357 imasmulr 13358 ismgmid 13426 pws0g 13500 dfrhm2 14134 subrg1 14211 2idlbas 14495 psrbagfi 14653 psrlinv 14664 mplbascoe 14671 mplplusgg 14683 uptx 14964 resubmet 15246 ply1termlem 15432 lgsval4lem 15706 lgsquadlem2 15773 m1lgs 15780 uspgrf1oedg 15990 |
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