Decades: 1220s 1230s 1240s 1250s 1260s - 1270s - 1280s 1290s 1300s 1310s 1320s
Years: 1268 1269 1270 1271 1272 - 1273 - 1274 1275 1276 1277 1278
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 ...