Pringle History. The Pringle Clan has been recorded since 1270, an early form of the name being Hoppringill. The family held many lands around Galashiels, where the name is first recorded in a charter granted during the reign of Alexander III.
Definition of MATRIX ALGEBRA. : generalized algebra that deals with the operations and relations among matrices.
Matrix. A matrix is a collection of data elements arranged in a two-dimensional rectangular layout. The following is an example of a matrix with 2 rows and 3 columns. We reproduce a memory representation of the matrix in R with the matrix function. The data elements must be of the same basic type. + c(2, 4, 3, 1, 5, 7), # the data elements. + nrow=2, # number of rows. + ncol=3, # number of columns. + byrow = TRUE) # fill matrix by rows. [,1] [,2] [,3]. [1,] 2 4 3. [2,] 1 5 7. An element at the m row, n column of A can be accessed by the expression A[m, n] .