Matrix Multiplication

[Peter Luschny]

From Sage Quick Reference: Linear Algebra, Robert A. Beezer:

Matrix Multiplication

    u = vector(QQ, [1,2,3]), v = vector(QQ, [1,2])

    A = matrix(QQ, [[1,2,3],[4,5,6]])

    B = matrix(QQ, [[1,2],[3,4]])

    u*A, A*v, B*A, B^6, B^(-3) all possible 

----

However u*A or A*v give:

TypeError: unsupported operand parent(s) for *: 'Vector space 

of dimension 3 over Rational Field' and 'Full MatrixSpace of 

2 by 3 dense matrices over Rational Field'

SageMath version 8.4, Release Date: 2018-10-17

[Dima Pasechnik]

looks like a typo in Rob's Quick Reference to me.

>
> SageMath version 8.4, Release Date: 2018-10-17
>

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