1. Square numberIn mathematics, a square number, sometimes also called a perfect square, is an integer that is the square of an integer; in other words, it is the product of some integer with itself. So, for example, 9 is a square number, since it can be written as 3 × 3. The usual notation for the formula for the square of a number n is not the product n × n, but the equivalent exponentiation n, usually pronounced as "n squared". The name square number comes from the name of the shape.
Read “Square number” on English Wikipedia
Read “平方数” on Japanese Wikipedia
Read “Square number” on DBpedia
Read “Square number” on English Wikipedia
Read “平方数” on Japanese Wikipedia
Read “Square number” on DBpedia
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