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zbMath0712.11074MaRDI QIDQ3497175

Zheng Ding, Fuxing Shen

Publication date: 1990

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

ultraproduct model-theoretic methods sum of squares Mordell's equation prime triples commutative extension rings

Mathematics Subject Classification ID

Sums of squares and representations by other particular quadratic forms (11E25) Quadratic and bilinear Diophantine equations (11D09) Extension theory of commutative rings (13B02) Ultraproducts (number-theoretic aspects) (11U07) Model theory (number-theoretic aspects) (11U09)

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