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On a certain type of primitive representations of rational integers as sum of squares
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It is well known that a positive integer not of the form 4a (8m+7) can be expressed as a sum of there integer squares . Dirichlet (cf . [1]) proved that a positive integer admits a primitive representation as a sum of there squares if and only if it is not of the form 8m+7 or 4m .
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ARENAS, A. (Àngela). On a certain type of primitive representations of rational integers as sum of squares. Publicacions Matemàtiques. 1984. Vol. 28, num. 2/3, pags. 75-80. ISSN 0214-1493. [consulted: 13 of October of 2026]. Available at: https://hdl.handle.net/2445/132746