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...Lecture matrices dheeraj kumar singh cs teacher prof niloy ganguly department of computer science and engineering iit kharagpur th july types matrix addition multiplication boolean operations amatrix is a rectangular array numbers arranged in m horizontal rows n vertical columns nn here we say that order acan also be written as the dierent are square number equal if it said to entries form main diagonal for example then every element o its zero all denoted by identity an whose elements called i symmetricmatrix asquarematrixa ofordernissaidtobeasymmetric j such ij ji additionofmatrices twomatrices b can added only they same aandb c dened cij aij bij...