```Date: May 5, 2013 6:06 AM
Author: Nasser Abbasi
Subject: Re: second largest element in a matrix

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, tilindg1@gmail.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 matrixis rectangular array. That is what the teacher told usin class. I also looked up in many other places.http://www.thefreedictionary.com/matrix"a. Mathematics A rectangular array of numeric or algebraicquantities subject to mathematical operations.b. Something resembling such an array, as in the regularformation of elements into columns and rows."http://oxforddictionaries.com/us/definition/american_english/matrix"3 Mathematics a rectangular array of quantities orexpressions in rows and columns that is treated as a singleentity and manipulated according to particular rules."http://chortle.ccsu.edu/vectorlessons/vmch13/vmch13_2.html"A matrix is a collection of numbers arranged into afixed number of rows and columns"http://science.yourdictionary.com/matrix"Mathematics A rectangular array of numeric or algebraicquantities subject to mathematical operations."http://www.macmillandictionary.com/us/dictionary/american/matrix"math an arrangement of numbers or symbols in a pattern from top tobottom and from left to right, used for solving problems in mathematics"http://mathworld.wolfram.com/Matrix.html"In his 1851 paper, Sylvester wrote, "For this purposewe must commence, not with a square, but with an oblongarrangement of terms consisting, suppose, of m lines andn columns. This will not in itself represent a determinant,but is, as it were, a Matrix out of which we may form varioussystems of determinants by fixing upon a number p, andselecting at will p lines and p columns, the squares correspondingof pth order."https://en.wikipedia.org/wiki/Matrix_%28mathematics%29"In mathematics, a matrix (plural matrices) is a rectangulararray of numbers, symbols, or expressions, arranged in rows and columns."--Nasser
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