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Paper detail

Squaring the magic squares of order 4

In this paper, we present the problem of counting magic squares and we focus on the case of multiplicative magic squares of order 4. We give the exact number of normal multiplicative magic squares of order 4 with an original and complete proof, pointing out the role of the action of the symmetric group. Moreover, we provide a new representation for magic squares of order 4. Such representation allows the construction of magic squares in a very simple way, using essentially only five particular 4X4 matrices.

preprint2013arXivOpen access
Stefano BarberoUmberto CerrutiNadir Murru
math.NT
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Stefano BarberoUmberto CerrutiNadir Murru

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