| 11. | Hamilton introduced both real quaternions and complex quaternions, called biquaternions.
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| 12. | The algebra A is called the quaternion algebra of \ Gamma.
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| 13. | The quaternion involved abandoning commutativity, a radical step for the time.
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| 14. | A feature of quaternions is that multiplication of two quaternions is noncommutative.
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| 15. | A feature of quaternions is that multiplication of two quaternions is noncommutative.
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| 16. | At this time, quaternions were a mandatory examination topic in Dublin.
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| 17. | They are the quaternions, named by Hamilton in 1843.
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| 18. | This lattice is isomorphic to the lattice of Hurwitz quaternions.
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| 19. | Thus, there is a Hurwitz quaternion \ alpha such that
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| 20. | Bradstreet's first two quaternions were her most successful rhetoretical contrasts.
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