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| Mirrors > Home > ILE Home > Th. List > eqbrtrdi | GIF version | ||
| Description: A chained equality inference for a binary relation. (Contributed by NM, 12-Oct-1999.) |
| Ref | Expression |
|---|---|
| eqbrtrdi.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| eqbrtrdi.2 | ⊢ 𝐵𝑅𝐶 |
| Ref | Expression |
|---|---|
| eqbrtrdi | ⊢ (𝜑 → 𝐴𝑅𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqbrtrdi.2 | . 2 ⊢ 𝐵𝑅𝐶 | |
| 2 | eqbrtrdi.1 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 3 | 2 | breq1d 4096 | . 2 ⊢ (𝜑 → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶)) |
| 4 | 1, 3 | mpbiri 168 | 1 ⊢ (𝜑 → 𝐴𝑅𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 class class class wbr 4086 |
| 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-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2802 df-un 3202 df-sn 3673 df-pr 3674 df-op 3676 df-br 4087 |
| This theorem is referenced by: eqbrtrrdi 4126 pm54.43 7386 recapb 8841 nn0ledivnn 9992 xltnegi 10060 leexp1a 10846 facwordi 10992 faclbnd3 10995 resqrexlemlo 11564 efap0 12228 dvds1 12404 en1top 14791 dvef 15441 rpabscxpbnd 15654 zabsle1 15718 lgseisen 15793 lgsquadlem2 15797 upgr2wlkdc 16172 trirec0 16584 |
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