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William Rowan Hamilton invents quaternions, a three-dimensional system of complex numbers.
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William Rowan Hamilton
Irish mathematician, physicist, and astronomer (1805–1865)
Sir William Rowan Hamilton was an Irish mathematician, physicist, and astronomer who made numerous major contributions to abstract algebra, classical mechanics, and optics. His theoretical works and mathematical equations are considered fundamental to modern theoretical physics,…Source: Wikipedia (CC BY-SA)
Quaternion
Noncommutative extension of the complex numbers
In mathematics, the quaternion number system extends the complex numbers. Quaternions were first described by the Irish mathematician William Rowan Hamilton in 1843 and applied to mechanics in three-dimensional space. The set of all quaternions is conventionally denoted by , or…Source: Wikipedia (CC BY-SA)