Decades: 1690s BC 1680s BC 1670s BC 1660s BC - 1650s BC - 1640s BC 1630s BC 1620s BC 1610s BC 1600s BC
Significant People
... complex numbers, or more generally members of any field whose characteristic is not 2. (In a field of characteristic 2, the element 2a is zero and it is impossible to ...