Author(s)

Aleksander Grytczuk

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In this paper we present some results connected with still open problem of Gauss, negative Pell’s equation and some type graphs.In particular we prove in the Theorem 1 that all real quadratic fields K=Q( ) , generated by Fermat’s numbers with d=F_m+1=2^2m+1+1,m≥2, have not unique factorization. Theorem 2 give a connection of the Gauss problem with primitive Pythagorean triples. Moreover, in final part of our paper we indicate on some connections of the Gauss problem with odd graphs investigated by Cremona and Odoni in the papper [5].

Fermat Numbers, Class-Number Gauss’ Problem, Odd Graphs

A. Grytczuk, "Gauss’ Problem, Negative Pell’s Equation and Odd Graphs," Advances in Pure Mathematics, Vol. 1 No. 4, 2011, pp. 133-135. doi: 10.4236/apm.2011.14026.