Decades: 1350s 1360s 1370s 1380s 1390s - 1400s - 1410s 1420s 1430s 1440s 1450s
Years: 1396 1397 1398 1399 1400 - 1401 - 1402 1403 1404 1405 1406
Births
Deaths
... characteristic is not 2. (In a field of characteristic 2, the element 2a is zero and it is impossible to divide by it.) The symbol <math>\pm \sqrt ...