Resumen de Polar and singular value decomposition of 3×3 magic squares

Götz Trenkler, Karsten Schmidt, Dietrich Trenkler

• In this note, we find polar as well as singular value decompositions of a 3×3 magic square, i.e. a 3×3 matrix Mwith real elements where each row, column and diagonal adds up to the magic sum sof the magic square.