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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 3944 | . 2 ⊢ (𝐴𝑅𝐶 ↔ 𝐵𝑅𝐶) |
4 | 1, 3 | mpbir 145 | 1 ⊢ 𝐴𝑅𝐶 |
Colors of variables: wff set class |
Syntax hints: = wceq 1332 class class class wbr 3937 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-v 2691 df-un 3080 df-sn 3538 df-pr 3539 df-op 3541 df-br 3938 |
This theorem is referenced by: eqbrtrri 3959 3brtr4i 3966 exmidonfinlem 7066 neg1lt0 8852 halflt1 8961 3halfnz 9172 declei 9241 numlti 9242 faclbnd3 10521 geo2lim 11317 0.999... 11322 geoihalfsum 11323 tan0 11474 cos2bnd 11503 sin4lt0 11509 eirraplem 11519 1nprm 11831 znnen 11947 tan4thpi 12970 ex-fl 13108 trilpolemisumle 13406 |
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