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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 7225 exmidonfinlem 7552 neg1lt0 9422 halflt1 9534 3halfnz 9754 declei 9828 numlti 9829 faclbnd3 11203 geo2lim 12308 0.999... 12313 geoihalfsum 12314 fprodap0 12413 fprodap0f 12428 tan0 12523 cos2bnd 12552 sin4lt0 12559 eirraplem 12569 1nprm 12917 ballotfilemth 13339 znnen 13347 cnfldstr 15004 tan4thpi 16101 log2tlbndlog2 16253 ppiqltx 16314 bposlem8 16351 zabsle1 16356 ex-fl 16977 trilpolemisumle 17327 |
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