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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 4043 | . 2 ⊢ (𝜑 → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶)) |
| 4 | 1, 3 | mpbiri 168 | 1 ⊢ (𝜑 → 𝐴𝑅𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1364 class class class wbr 4033 |
| 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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-v 2765 df-un 3161 df-sn 3628 df-pr 3629 df-op 3631 df-br 4034 |
| This theorem is referenced by: eqbrtrrdi 4073 pm54.43 7257 recapb 8698 nn0ledivnn 9842 xltnegi 9910 leexp1a 10686 facwordi 10832 faclbnd3 10835 resqrexlemlo 11178 efap0 11842 dvds1 12018 en1top 14313 dvef 14963 rpabscxpbnd 15176 zabsle1 15240 lgseisen 15315 lgsquadlem2 15319 trirec0 15688 |
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