Schinzel, A. Note to the paper “A positive definite binary quadratic form as a sum of five squares of linear forms (Completion of Mordell’s proof)”. (English) Zbl 1301.11045 Bull. Pol. Acad. Sci., Math. 61, No. 2, 107 (2013). MSC: 11E25 × Cite Format Result Cite Review PDF Full Text: DOI
Schinzel, A. A positive definite binary quadratic form as a sum of five squares of linear forms (completion of Mordell’s proof). (English) Zbl 1301.11044 Bull. Pol. Acad. Sci., Math. 61, No. 1, 23-26 (2013). MSC: 11E25 × Cite Format Result Cite Review PDF Full Text: DOI OA License
Ko, Chao Note on the representation of a quadratic form as a sum of squares of linear forms. (English) Zbl 0018.20303 Q. J. Math., Oxf. Ser. 9, 32-33 (1938). Reviewer: Kurt Mahler (Manchester) MSC: 11E25 × Cite Format Result Cite Review PDF Full Text: DOI
Ko, Chao On the representation of a quadratic form as a sum of squares of linear forms. (English) Zbl 0016.39001 Q. J. Math., Oxf. Ser. 8, 81-98 (1937). Reviewer: Kurt Mahler (Krefeld) MSC: 11E25 × Cite Format Result Cite Review PDF Full Text: DOI