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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 4140 | . 2 ⊢ (𝜑 → (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶)) |
| 4 | 1, 3 | mpbiri 168 | 1 ⊢ (𝜑 → 𝐴𝑅𝐶) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 class class class wbr 4130 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-sn 3715 df-pr 3716 df-op 3718 df-br 4131 |
| This theorem is used by: eqbrtrrdi 4170 pm54.43 7536 recapb 9003 nn0ledivnn 10178 xltnegi 10247 leexp1a 11044 facwordi 11192 faclbnd3 11195 resqrexlemlo 11793 efap0 12460 dvds1 12636 ballotfilemrc 13323 en1top 15227 dvef 15877 rpabscxpbnd 16095 bposlem1 16209 bposlem5 16213 zabsle1 16216 lgseisen 16291 lgsquadlem2 16295 upgr2wlkdc 16716 trirec0 17191 |
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