Dihedral Group D_2

See also

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More things to try:

• {{0,-1},{1,0}}.{{1,2},{3,4}}+{{2,-1},{-1,2}}
• gcd x^4-9x^2-4x+12, x^3+5x^2+2x-8
• inflection points (x^5+x^9-x-1)^3

Cite this as:

Weisstein, Eric W. "Dihedral Group D_2." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/DihedralGroupD2.html

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