Dihedral group

GPTKB entity

Statements (32)
Predicate Object
gptkbp:instanceOf gptkb:group_of_people
gptkb:symmetry
gptkbp:actsOn regular n-gon
gptkbp:contains cyclic subgroup of order n
n reflections
n rotations
gptkbp:first_studied_in 19th century
gptkbp:generation rotation and reflection
gptkbp:has_elements reflections
rotations
gptkbp:has_identity_element rotation by 0 degrees
gptkbp:has_order_2_elements reflections
gptkbp:hasSubgroup gptkb:symmetric_group_S_n
https://www.w3.org/2000/01/rdf-schema#label Dihedral group
gptkbp:is_abelian for n = 1 or 2
gptkbp:is_not_simple for n > 2
gptkbp:is_solvable for all n
gptkbp:isNonAbelian for n > 2
gptkbp:isomorphicTo symmetry group of regular polygon
gptkbp:isSimple for n = 2
gptkbp:namedFor gptkb:Arthur_Cayley
gptkbp:notation D_n
Dih_n
gptkbp:order 2n
gptkbp:order_of_D_3 6
gptkbp:order_of_D_4 8
gptkbp:presentedBy < r, s | r^n = s^2 = 1, s r s^{-1} = r^{-1} >
gptkbp:used_in gptkb:geometry
crystallography
group theory
gptkbp:bfsParent gptkb:Triangle_Group
gptkbp:bfsLayer 5