MatMult {HiDimDA}

MatMult: Specialized matrix multiplication of ‘DMat’, ‘ShrnkMat’, ‘ShrnkMatInv’, ‘SigFq’ and ‘SigFqInv’ objects.

Description

‘LeftMult’ multiplies, on the left, a vector or matrix of compatible dimensions, by a ‘DMat’, ‘ShrnkMat’, ‘ShrnkMatInv’, ‘SigFq’ or ‘SigFqInv’ object.

‘RightMult’ multiplies, on the right, a vector or matrix of compatible dimensions, by a ‘DMat’, ‘ShrnkMat’, ‘ShrnkMatInv’, ‘SigFq’ or ‘SigFqInv’ object.

Usage

## S3 method for class 'DMat'
LeftMult(x, a)
## S3 method for class 'DMat'
RightMult(x, a)
## S3 method for class 'ShrnkMat'
LeftMult(x, a)
## S3 method for class 'ShrnkMat'
RightMult(x, a)
## S3 method for class 'ShrnkMatInv'
LeftMult(x, a)
## S3 method for class 'ShrnkMatInv'
RightMult(x, a)
## S3 method for class 'SigFq'
LeftMult(x, a)
## S3 method for class 'SigFq'
RightMult(x, a)
## S3 method for class 'SigFqInv'
LeftMult(x, a)
## S3 method for class 'SigFqInv'
RightMult(x, a)

Arguments

x

An object of class ‘DMat’, ‘ShrnkMat’, ‘ShrnkMatInv’, ‘SigFq’ or class ‘SigFqInv’, with a compact representation of a specialized square symmetric matrix.

a

A vector, or matrix, by which ‘x’ is to be multiplied.

Value

A vector or a (traditional numeric) matrix with the result of the matrix product.

See Also

DMat, FrobSigAp, ShrnkMat, ShrnkMatInv, SigFq, SigFqInv, solve.DMat,

solve.ShrnkMat, solve.ShrnkMatInv, solve.SigFq, solve.SigFqInv