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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 4119 | . 2 ⊢ (𝜑 → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶)) |
| 4 | 1, 3 | mpbiri 168 | 1 ⊢ (𝜑 → 𝐴𝑅𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 class class class wbr 4109 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-v 2815 df-un 3215 df-sn 3695 df-pr 3696 df-op 3698 df-br 4110 |
| This theorem is referenced by: eqbrtrrdi 4149 pm54.43 7487 recapb 8945 nn0ledivnn 10100 xltnegi 10168 leexp1a 10956 facwordi 11102 faclbnd3 11105 resqrexlemlo 11698 efap0 12363 dvds1 12539 en1top 14942 dvef 15592 rpabscxpbnd 15805 zabsle1 15872 lgseisen 15947 lgsquadlem2 15951 upgr2wlkdc 16372 trirec0 16828 |
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