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Line 7: ==Matrix operations== The quaternions form a [[noncommutative]] [[ring (algebra)\|ring]], and therefore ~~the also form a noncommutative ring, in which~~ [[Matrix addition\|addition]] and [[Matrix multiplication\|multiplication]] can be defined for quaternionic matrices as for matrices over any ring. '''Addition'''. The sum of two quaternionic matrices ''A'' and ''B'' is defined in the usual way by element-wise addition:

Quaternionic matrix: Difference between revisions