• ## Number theory - Wikipedia, the free encyclopedia

en.wikipedia.org/wiki/Number_theory Number theory or arithmetic [note 1] is a branch of pure mathematics devoted primarily to the study of the natural numbers and the integers. It is sometimes called ...
• ## Number Theory -- from Wolfram MathWorld

mathworld.wolfram.com/NumberTheory.html Number Theory. Number theory is a vast and fascinating field of mathematics, sometimes called "higher arithmetic," consisting of the study of the properties of whole ...
• ## number theory | mathematics | Britannica.com

www.britannica.com/topic/number-theory Number theory, branch of mathematics concerned with properties of the positive integers (1, 2, 3, …). Sometimes called “higher arithmetic,” it is among the ...

• ## What Is Number Theory?

www.math.brown.edu/~jhs/frintch1ch6.pdf Chapter 1 What Is Number Theory? Number theory is the study of the set of positive whole numbers 1;2;3;4;5;6;7;:::; which are often called the set of natural numbers.
• ## What is number theory? | HowStuffWorks

science.howstuffworks.com/math-concepts/number-theory.htm What is number theory? Learn how mathematicians use number theory to define relationships that underlie nature itself.
• ## Number Theory Web

www.numbertheory.org/ntw Number Theory Web. Aims; New Listings; Number theorists' Home Pages/Departmental listings; Things of Interest to Number Theorists; Search the Number Theory Web Pages