magic squares;
polar decomposition;
singular value decomposition;
Luoshu;
D O I:
10.1080/0020739X.2013.790507
中图分类号:
G40 [教育学];
学科分类号:
040101 ;
120403 ;
摘要:
In this note, we find polar as well as singular value decompositions of a 3 x 3 magic square, i.e. a 3 x 3 matrix M with real elements where each row, column and diagonal adds up to the magic sum s of the magic square.