За векторното пространство на магическите квадрати от трети ред (в занимателната математика)
The present paper is about magic squares and in particular about the vector space of third order magic squares. The aim is to answer some questions as: which sequence of nine numbers could be “formatted” into a magic square and how this could be done; whether the fact that the number sequence is a nine numbers arithmetic sequence is a necessary and sufficient condition for constructing a magic square; could any number be a magic square characteristic number; is there a “formula” for finding the proper numbers for constructing a magic square and so on. To answer these questions we use linear algebra elementary means for solving systems of linear equations.
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