Geodesic
Sum of Squares Rings
Canadian journal of mathematics, Tome 29 (1977) no. 1, pp. 155-160

Voir la notice de l'article provenant de la source Cambridge University Press

One of the nicest results in elementary number theory is the following, giving the relation between quadratic residues and sums of squares. 
Fine, Benjamin. Sum of Squares Rings. Canadian journal of mathematics, Tome 29 (1977) no. 1, pp. 155-160. doi: 10.4153/CJM-1977-014-3
@article{10_4153_CJM_1977_014_3,
     author = {Fine, Benjamin},
     title = {Sum of {Squares} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {155--160},
     year = {1977},
     volume = {29},
     number = {1},
     doi = {10.4153/CJM-1977-014-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-014-3/}
}
TY  - JOUR
AU  - Fine, Benjamin
TI  - Sum of Squares Rings
JO  - Canadian journal of mathematics
PY  - 1977
SP  - 155
EP  - 160
VL  - 29
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-014-3/
DO  - 10.4153/CJM-1977-014-3
ID  - 10_4153_CJM_1977_014_3
ER  - 
%0 Journal Article
%A Fine, Benjamin
%T Sum of Squares Rings
%J Canadian journal of mathematics
%D 1977
%P 155-160
%V 29
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-014-3/
%R 10.4153/CJM-1977-014-3
%F 10_4153_CJM_1977_014_3

[1] 1. Fine, Benjamin, The HNN and generalized free product structure of certain linear groups, Bull. A.M.S. 81 (1975) 413–416. Google Scholar

[2] 2. Fine, Benjamin A note on quadratic residues and sums of squares, submitted, Proceedings of AMS. 1976. Google Scholar

[3] 3. Fine, Benjamin The structure of PSL2(R), Annals of Mathematics Study 79, Discontinuous Groups and Riemann Surfaces (1974), 145–169. Google Scholar

[4] 4. Hardy, G. H. and Wright, E. M., The theory of numbers (Clarendon Press, 1960). Google Scholar

[5] 5. McQuillan, D. L., Classification of normal congruence subgroups of the modular group, Amer. J. Math. 87 (1965), 285–296. Google Scholar

[6] 6. Newman, Morris, Integral matrices (Academic Press, New York, 1972). Google Scholar

Cité par Sources :