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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 4137 | . 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 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: eqbrtrri 4153 3brtr4i 4160 exmidpw2en 7219 exmidonfinlem 7545 neg1lt0 9413 halflt1 9524 3halfnz 9745 declei 9814 numlti 9815 faclbnd3 11183 geo2lim 12285 0.999... 12290 geoihalfsum 12291 fprodap0 12390 fprodap0f 12405 tan0 12500 cos2bnd 12529 sin4lt0 12536 eirraplem 12546 1nprm 12894 ballotfilemth 13283 znnen 13291 cnfldstr 14897 tan4thpi 15945 log2tlbndlog2 16088 zabsle1 16130 ex-fl 16751 trilpolemisumle 17099 |
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