Decades: 1230s 1240s 1250s 1260s 1270s - 1280s - 1290s 1300s 1310s 1320s 1330s
Years: 1275 1276 1277 1278 1279 - 1280 - 1281 1282 1283 1284 1285
Births
Deaths
... its proof remain correct if the coefficients a, b and c are complex numbers, or more generally members of any field whose characteristic is not 2. (In a field of ...