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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 4125 | . 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 4115 |
| 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 2216 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-v 2817 df-un 3218 df-sn 3701 df-pr 3702 df-op 3704 df-br 4116 |
| This theorem is referenced by: eqbrtrrdi 4155 pm54.43 7501 recapb 8966 nn0ledivnn 10122 xltnegi 10191 leexp1a 10984 facwordi 11131 faclbnd3 11134 resqrexlemlo 11728 efap0 12393 dvds1 12569 ballotfilemrc 13223 en1top 15073 dvef 15723 rpabscxpbnd 15936 zabsle1 16003 lgseisen 16078 lgsquadlem2 16082 upgr2wlkdc 16503 trirec0 16969 |
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