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这是一枚邮票?对,是我国澳门发行的一套幻方邮票中的一枚(本套邮票首次于2014年底发行,有三枚将在今年发行)。它的内容引起了很多数学研究者及普通百姓的兴趣。邮票上的图是由一个三阶二维幻方构成的。其中,除了行和列外,所有六条对角线(其中四条为泛对角线,小朋友,快去和爸爸、妈妈一起查一查什么是泛对角
This is a stamp? Yes, it is one of a set of magic stamps issued by our country in Macao. The stamps were first released in late 2014 and three will be released this year. Its content has aroused the interest of many mathematical researchers and ordinary people. The picture on the stamp is made up of a third-order two-dimensional magic square. Among them, in addition to rows and columns, all six diagonals (of which four are diagonally diagonally, children, go and father, mother together check what is the diagonal