the study of integers and their relation to one another.
Why Veterans Day And The Number 11 Are Tied TogetherNovember 11th is the 315th day of the year (except on leap years). It’s also Veterans Day, a federal holiday honoring all military veterans.
Origin of number theory
First recorded in 1910–15
Also called theory of numbers.
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Examples from the Web for number theory
With the further development of the number-theory Pythagoreanism becomes entirely arbitrary and without principle.A Critical History of Greek Philosophy|W. T. Stace
British Dictionary definitions for number theory
the study of integers, their properties, and the relationship between integers
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012