Another interesting property from which I learnt about quaternions is that all the proper subgroups of the quaternion group are normal and commutative, but the

Another interesting property from which I learnt about quaternions is that all the proper subgroups of the quaternion group are normal and commutative, but the quaternion group itself is non commutative. [0] [0] https://www.cs.cas.cz/portal/AlgoMath/AlgebraicStructures/StructuresWithOneOperation/Groups/SpecialGroups/QuaternionGroup.htm https://www.cs.cas.cz/portal/AlgoMath/AlgebraicStructures/St...