Catalan Solids Derived From 3D-Root Systems and Quaternions

Details Catalan Solids Derived From 3D-Root Systems and Quaternions Catalan Solids Derived From 3D-Root Systems and Quaternions

2009-08-22

arxiv.org/abs/0908.3272v1

Journal of Mathematical Physics 51, 043501(2010)

Physics

Mathematical Physics

20 pages, 11 Figures

Scientific paper

Catalan Solids are the duals of the Archimedean solids, vertices of which can be obtained from the Coxeter-Dynkin diagrams A3, B3 and H3 whose simple roots can be represented by quaternions. The respective Weyl groups W(A3), W(B3) and W(H3) acting on the highest weights generate the orbits corresponding to the solids possessing these symmetries. Vertices of the Platonic and Archimedean solids result as the orbits derived from fundamental weights. The Platonic solids are dual to each others however duals of the Archimedean solids are the Catalan solids whose vertices can be written as the union of the orbits, up to some scale factors, obtained by applying the above Weyl groups on the fundamental highest weights (100), (010), (001) for each diagram. The faces are represented by the orbits derived from the weights (010), (110), (101), (011) and (111) which correspond to the vertices of the Archimedean solids. Representations of the Weyl groups W(A3), W(B3) and W(H3) by the quaternions simplify the calculations with no reference to the computer calculations.

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