Search results
Results From The WOW.Com Content Network
Legendre's three-square theorem states which numbers can be expressed as the sum of three squares; Jacobi's four-square theorem gives the number of ways that a number can be represented as the sum of four squares. For the number of representations of a positive integer as a sum of squares of k integers, see Sum of squares function.
This opens an editable copy of the page, showing all the wikitext used there, and the Source Editor toolbar offers simple menu options to add or change the formatting. Wikitext is used extensively throughout Wikipedia for such things as hyperlinks , tables and columns , footnotes , inline citation , special characters and so on.