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| Mirrors > Home > ILE Home > Th. List > eqbrtri | GIF version | ||
| Description: Substitution of equal classes into a binary relation. (Contributed by NM, 5-Aug-1993.) |
| Ref | Expression |
|---|---|
| eqbrtr.1 | ⊢ 𝐴 = 𝐵 |
| eqbrtr.2 | ⊢ 𝐵𝑅𝐶 |
| Ref | Expression |
|---|---|
| eqbrtri | ⊢ 𝐴𝑅𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqbrtr.2 | . 2 ⊢ 𝐵𝑅𝐶 | |
| 2 | eqbrtr.1 | . . 3 ⊢ 𝐴 = 𝐵 | |
| 3 | 2 | breq1i 4138 | . 2 ⊢ (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶) |
| 4 | 1, 3 | mpbir 146 | 1 ⊢ 𝐴𝑅𝐶 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 class class class wbr 4131 |
| 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 4132 |
| This theorem is used by: eqbrtrri 4154 3brtr4i 4161 exmidpw2en 7224 exmidonfinlem 7552 neg1lt0 9422 halflt1 9534 3halfnz 9755 declei 9829 numlti 9830 faclbnd3 11204 geo2lim 12309 0.999... 12314 geoihalfsum 12315 fprodap0 12414 fprodap0f 12429 tan0 12524 cos2bnd 12553 sin4lt0 12560 eirraplem 12570 1nprm 12918 ballotfilemth 13340 znnen 13348 cnfldstr 15005 tan4thpi 16080 log2tlbndlog2 16232 ppiqltx 16293 bposlem8 16330 zabsle1 16335 ex-fl 16956 trilpolemisumle 17306 |
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