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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 3792 | . 2 ⊢ (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶) |
4 | 1, 3 | mpbir 144 | 1 ⊢ 𝐴𝑅𝐶 |
Colors of variables: wff set class |
Syntax hints: = wceq 1284 class class class wbr 3785 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-v 2603 df-un 2977 df-sn 3404 df-pr 3405 df-op 3407 df-br 3786 |
This theorem is referenced by: eqbrtrri 3806 3brtr4i 3813 neg1lt0 8147 halflt1 8248 3halfnz 8444 declei 8512 numlti 8513 faclbnd3 9670 1nprm 10496 ex-fl 10563 |
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