Greatest common divisor: Introduction to the GCD and LCM (greatest common divisor and least common multiple)

GCD

$Mathematica Notation$

Introduction to the GCD and LCM (greatest common divisor and least common multiple)
		General
		Definitions of GCD and LCM
		Connections within the group of the GCD and LCM and with other function groups
		The best-known properties and formulas of the GCD and LCM
		Applications of the GCD and LCM