What is a rational number? - Rational numbers are the set of numbers that can be written as fractions (quotients). That is, a rational number can be represented by an infinite recurring decimal. - ...

Irrational numbers are numbers that cannot be expressed as the ratio of two whole numbers. This is opposed to rational numbers, like 2, 7, one-fifth and -13/9, which can be, and are, expressed as the ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

When you hear the words "rational" and "irrational," they might bring to mind the relentlessly analytical Spock in "Star Trek." If you're a mathematician, however, you probably think of ratios between ...

The ancient Greeks wondered when “irrational” numbers can be approximated by fractions. By proving the longstanding Duffin-Schaeffer conjecture, two mathematicians have provided a complete answer. The ...

Hippasus of Metapontum, the Greek philosopher and mathematician, apparently from Biografia degli uomini illustri del regno di Napoli. Public Domain. Hippasus of Metapontum was a Greek philosopher who ...