Negatively reduced ideals of a real quadratic field and a problem of Eisenstein

zbMath0806.11043MaRDI QIDQ1329049

Pierre Kaplan, Philip A. Leonard

Publication date: 13 February 1995

Published in: L'Enseignement Mathématique. 2e Série (Search for Journal in Brave)

zbMATH Keywords

real quadratic fieldPell equationperiod lengthquadratic ordersreduced idealsEisenstein problemexistence of odd solutionsreduced regular continued fraction expansion

Mathematics Subject Classification ID

Quadratic extensions (11R11) Units and factorization (11R27) Quadratic and bilinear Diophantine equations (11D09) Continued fractions (11A55) Class numbers, class groups, discriminants (11R29)

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