Algebraic Combinatorics
A dihedral group is a mathematical group that describes the symmetries of a regular polygon, including both rotations and reflections. Specifically, the dihedral group $D_n$ consists of $n$ rotations and $n$ reflections, making it a key concept in combinatorial counting problems related to symmetry and arrangement. These groups help understand how objects can be transformed while maintaining their structure.
congrats on reading the definition of Dihedral Group. now let's actually learn it.