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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 7546 neg1lt0 9415 halflt1 9527 3halfnz 9748 declei 9822 numlti 9823 faclbnd3 11196 geo2lim 12301 0.999... 12306 geoihalfsum 12307 fprodap0 12406 fprodap0f 12421 tan0 12516 cos2bnd 12545 sin4lt0 12552 eirraplem 12562 1nprm 12910 ballotfilemth 13332 znnen 13340 cnfldstr 14946 tan4thpi 15995 log2tlbndlog2 16142 ppiqltx 16203 zabsle1 16240 ex-fl 16861 trilpolemisumle 17209 |
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