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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 3608 iffalse 3611 difprsn1 3810 dmmptg 5232 relcoi1 5266 funimacnv 5403 dmmptd 5460 dffv3g 5631 dfimafn 5690 fvco2 5711 isoini 5954 iotaexel 5971 fvmpopr2d 6153 oprabco 6377 ixpconstg 6871 unfiexmid 7105 undifdc 7111 sbthlemi4 7153 sbthlemi5 7154 sbthlemi6 7155 supval2ti 7188 exmidfodomrlemim 7405 suplocexprlemex 7935 eqneg 8905 zeo 9578 fseq1p1m1 10322 seq3val 10715 seqvalcd 10716 hashfzo 11079 hashxp 11083 wrdval 11109 wrdnval 11137 swrdccat3blem 11313 fsumconst 12008 modfsummod 12012 telfsumo 12020 fprodconst 12174 mulgcd 12580 algcvg 12613 phiprmpw 12787 phisum 12806 strslfv3 13121 resseqnbasd 13149 pwssnf1o 13374 imasplusg 13384 imasmulr 13385 ismgmid 13453 pws0g 13527 dfrhm2 14161 subrg1 14238 2idlbas 14522 psrbagfi 14680 psrlinv 14691 mplbascoe 14698 mplplusgg 14710 uptx 14991 resubmet 15273 ply1termlem 15459 lgsval4lem 15733 lgsquadlem2 15800 m1lgs 15807 uspgrf1oedg 16020 gsumgfsumlem 16633 |
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