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Line 37: Left scalar multiplication is defined by :<math>(cA)_{ij}=cA_{ij}, \qquad (Ac)_{ij}=A_{ij}c.\,</math> Again, since multiplication is not commutative some care must be taken in the order of the factors.<ref>{{cite book \|title=Matrix groups for undergraduates\|first=Kristopher\|last=Tapp \|publisher=AMS Bookstore\|year=2005\|isbn=0-8218-3785-0 \|pages=11 ''ff''

Quaternionic matrix: Difference between revisions