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Suppose that q = a + bi + cj + dk where a, b, c, d are real numbers and the basis vectors 1; i; j; k satisfy the following multiplication rules
i*i= j*j = k*k = -1; ij = k; ji = -k
a) Show the set {+-1,+-i,+-j,+-k} constitute a group, Q and that the set of all q is an
algebra.
b) Determine the classes and construct the character table for this group.
c) Construct a 4-dimensional representation and resolve it into irreducible representations.
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