It is a table of items, usually numbers. For example, you might consider the prices of several items in a shop. Put these in a column. Then for the same items in a different shop, another column alongside the first. And several shops. You finish up with an array of prices. That is an example of a matrix.
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look in a maths dictionary
No. To find the second-order ranking (second-order dominance vector, V2), you add each of the columns and it will give you a (how ever many rows) x 1 matrix.
In Algebra, the word determinant is a special number which is associated to any square matrix. Like for example, a rectangular array of numbers where the finite number of rows and columns are equal. Therefore, the meaning of a determinant is a scale factor for measuring wherever the matrix is regarded.
ya yes its there a matrix called zero matrix
The lady who invented maths was called Charlotte Higgleson and she was born in Greece