Binary icosahedral group

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2020 Mathematics Subject Classification: Primary: 20-XX [MSN][ZBL]

The group $\langle 5,3,2 \rangle$ abstractly presented as: $$ \langle A,B \ |\ A^5=B^3=(AB)^2 \rangle \ . $$ It is finite of order 120. It occurs as a subgroup of the unit quaternions.

The group has an action on the three-sphere with dodecahedral space as quotient.


[1] H.S.M. Coxeter, "Regular complex polytopes" , Cambridge Univ. Press (1991) pp. 77 ISBN 0-521-20125-X Zbl 0732.51002
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