Difference between revisions of "Quaternion"
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| − | Note in particular that multiplication of quaternions is not commutative. However, multiplication on certain [[subset]]s does behave well: the set <math>\{a + bi + 0j + 0k \mid a, b \in \mathbb{R}\}</math> act exactly like the complex | + | Note in particular that multiplication of quaternions is not commutative. However, multiplication on certain [[subset]]s does behave well: the set <math>\{a + bi + 0j + 0k \mid a, b \in \mathbb{R}\}</math> act exactly like the [[complex number]]s. |
| + | ==See Also== | ||
| + | *[[Real number|Real numbers]] | ||
| + | *[[Complex numbers]] | ||
| + | *[[Rational numbers]] | ||
| + | *[[Integers]] | ||
| + | *[[Irrational number]] | ||
| + | *[[Transcendental number]] | ||
{{stub}} | {{stub}} | ||
Revision as of 19:47, 14 October 2013
The quaternions are a division ring (that is, a ring in which each element has a multiplicative inverse; alternatively, a noncommutative field) which generalize the complex numbers.
Formally, the quaternions are the set 
, where 
are any real numbers and the behavior of 
is "as you would expect," with the properties:
, 
and 
, 
and 
Note in particular that multiplication of quaternions is not commutative. However, multiplication on certain subsets does behave well: the set 
act exactly like the complex numbers.
See Also
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