EntityQ651480· pop 39· linked from 109 articlesmain diagonalSign in to saveone of the diagonals of a square matrixConnectionstraceEntitydiagonal matrixEntityInternational Standard Book NumberEntitylinear algebraEntitymatrixEntityLibrary of Congress Control NumberEntityidentity matrixEntitysquare matrixEntityMathWorldEntityWileyEntityEric W. WeissteinEntitytridiagonal matrixEntityAddison-WesleyEntityband matrixEntityAcademic PressEntityanti-diagonal matrixEntityCategoriesMatrices (mathematics)