On 5/5/2013 4:21 AM, Bruno Luong wrote: >> On 5/4/2013 7:54 PM, Nasser M. Abbasi wrote: >>> On 5/4/2013 6:14 PM, email@example.com wrote: >>> >>>> IF for example, i have a matrix [3,1,1,0,2,0] >>> >>> this is not a matrix. it is a list of a vector. > > I'm with dbp on that one. To my book it is a matrix as well. A matrix can have one > of the size reduced to 1. > Wikipedia definition never restrict the size large or equal to 2. > > Matrix backslash operator \ can be applied on matrices, vectors or scalars >because they are all matrices. > > Thinking a matrix must have a size larger than 1 is human, not mathematics. > > Bruno >
I can only go by Mathematics. In Mathematics, a matrix is rectangular array. That is what the teacher told us in class. I also looked up in many other places.
"a. Mathematics A rectangular array of numeric or algebraic quantities subject to mathematical operations. b. Something resembling such an array, as in the regular formation of elements into columns and rows."
"In his 1851 paper, Sylvester wrote, "For this purpose we must commence, not with a square, but with an oblong arrangement of terms consisting, suppose, of m lines and n columns. This will not in itself represent a determinant, but is, as it were, a Matrix out of which we may form various systems of determinants by fixing upon a number p, and selecting at will p lines and p columns, the squares corresponding of pth order."