EntityQ4166054· pop 10· linked from 52 articlessingular valueSign in to savein mathematics, the square root of an eigenvalue of a nonnegative self-adjoint operatorConnectionseigenvectors and eigenvaluesEntitydiagonal matrixEntitymathematicsEntityInternational Standard Book NumberEntityreal numberEntitydigital object identifierEntitymatrixEntityellipseEntityHilbert spaceEntityfunctional analysisEntityellipsoidEntityBanach spaceEntitytraceEntitynormed vector spaceEntityunitary matrixEntityErhard SchmidtEntityrotation matrixEntitynormal matrixEntitysingular value decompositionEntityMark KreinEntityCategoriesOperator theorySingular value decomposition