Encyclopedia > 680

  Article Content

680

Centuries: 6th century - 7th century - 8th century

Decades: 630s 640s 650s 660s 670s - 680s - 690s 700s 710s 720s 730s

Years: 675 676 677 678 679 - 680 - 681 682 683 684 685


Events

Births

Deaths



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
P-group

... is, for each element g of the group, there exists a natural number n such that g to the power pn is equal to the identity element. Such groups are also called primary. ...