## S4 methods for signature 'ExplicitRepresentation'
## x[i,j]## further methods see below
## S3 method for class 'matrix,dgRMatrix':
%*%(x, y)
## S3 method for class 'dgRMatrix,numeric':
%*%(x, y)
x
is a
matrix
, for the second case a numeric matrix and x is an explicit
representation