Lagrange’s theorem

Let $G$ be a finite group and let $H$ be a subgroup of $G$. Then the order of $H$ divides the order of $G$.

Title	Lagrange’s theorem
Canonical name	LagrangesTheorem
Date of creation	2013-03-22 12:13:03
Last modified on	2013-03-22 12:13:03
Owner	Evandar (27)
Last modified by	Evandar (27)
Numerical id	6
Author	Evandar (27)
Entry type	Theorem
Classification	msc 20D99
Related topic	Group
Related topic	ProofOfFermatsLittleTheoremUsingLagrangesTheorem
Related topic	ProofOfEulerFermatTheoremUsingLagrangesTheorem