by John on (#5K9AJ)
Pick a quaternion p = p0 + p1i + p2j + p3k and consider the function that acts on quaternions by multiplying them on the left by p. If we think of q as a vector in R4 then this is a linear function of q, and so it can be represented by multiplication by […]The post Quaternion product as a matrix product first appeared on John D. Cook.