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＜電子ブック＞
Diophantine Equations and Power Integral Bases : New Computational Methods / by Istvan Gaal

版	1st ed. 2002.
出版者	(Boston, MA : Birkhäuser Boston : Imprint: Birkhäuser)
出版年	2002
大きさ	208 p : online resource
著者標目	*Gaal, Istvan author SpringerLink (Online service)
件　名	LCSH:Mathematics LCSH:Algorithms LCSH:Computer science—Mathematics FREE:Mathematics FREE:Algorithms FREE:Mathematics of Computing
一般注記	1 Introduction -- 1.1 Basic concepts -- 1.2 Related results -- 2 Auxiliary Results, Tools -- 2.1 Baker’s method, effective finiteness theorems -- 2.2 Reduction -- 2.3 Enumeration methods -- 2.4 Software, hardware -- 3 Auxiliary Equations -- 3.1 Thue equations -- 3.2 Inhomogeneous Thue equations -- 3.3 Relative Thue equations -- 3.4 The resolution of norm form equations -- 4 Index Form Equations in General -- 4.1 The structure of the index form -- 4.2 Using resolvents -- 4.3 Factorizing the index form when proper subfields exist -- 4.4 Composite fields -- 5 Cubic Fields -- 5.1 Arbitrary cubic fields -- 5.2 Simplest cubic fields -- 6 Quartic Fields -- 6.1 Algorithm for arbitrary quartic fields -- 6.2 Simplest quartic fields -- 6.3 An interesting application to mixed dihedral quartic fields -- 6.4 Totally complex quartic fields -- 6.5 Bicyclic biquadratic number fields -- 7 Quintic Fields -- 7.1 Algorithm for arbitrary quintic fields -- 7.2 Lehmer’s quintics -- 8 Sextic Fields -- 8.1 Sextic fields with a quadratic subfield -- 8.2 Sextic fields with a cubic subfield -- 8.3 Sextic fields as composite fields -- 9 Relative Power Integral Bases -- 9.1 Basic concepts -- 9.2 Relative cubic extensions -- 9.3 Relative quartic extensions -- 10 Some Higher Degree Fields -- 10.1 Octic fields with a quadratic subfield -- 10.2 Nonic fields with cubic subfields -- 10.3 Some more fields of higher degree -- 11 Tables -- 11.1 Cubic fields -- 11.2 Quartic fields -- 11.3 Sextic fields -- References -- Author Index This monograph investigates algorithms for determining power integral bases in algebraic number fields. It introduces the best-known methods for solving several types of diophantine equations using Baker-type estimates, reduction methods, and enumeration algorithms. Particular emphasis is placed on properties of number fields and new applications. The text is illustrated with several tables of various number fields, including their data on power integral bases. Good resource for solving classical types of diophantine equations. Aimed at advanced undergraduate/graduate students and researchers HTTP:URL=https://doi.org/10.1007/978-1-4612-0085-7

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