Chiral digonal pyramidal symmetry

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Chiral digonal pyramidal symmetry

Chiral digonal pyramidal symmetry, also known as espyric symmetry and notated as K2+×I, is a 3D spherical symmetry group. It is the symmetry group of the phyllic disphenoid and is equivalent to 2-fold rotational symmetry (2D central inversion with no extension into 3D). It can be considered the digonal member of the infinite family of chiral pyramidal symmetries.

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