Ex-library with stamp and library-signature. GOOD condition, some traces of use. Ancien Exemplaire de biblioth�que avec signature et cachet. BON �tat, quelques traces d'usure. Ehem. Bibliotheksexemplar mit Signatur und Stempel. GUTER Zustand, ein paar Gebrauchsspuren. 12 POH 9783764329136 Sprache: Englisch Gewicht in Gramm: 550.

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Detalles bibliogr�ficos

T�tulo

Computational algebraic number theory Michael E. Pohst. DMV Seminar 21.

Editor

Basel , Birkh�user [1993].

Fecha de publicaci�n

1993

Idioma

Ingl�s

ISBN 10

3764329130

ISBN 13

9783764329136

Encuadernaci�n

Softcover

Cat�logos de vendedores

SA MATHEMATIK

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Sinopsis

Computational algebraic number theory has been attracting broad interest in the last few years due to its potential applications in coding theory and cryptography. For this reason, the Deutsche Mathematiker Vereinigung initiated an introductory graduate seminar on this topic in D�sseldorf. The lectures given there by the author served as the basis for this book which allows fast access to the state of the art in this area. Special emphasis has been placed on practical algorithms - all developed in the last five years - for the computation of integral bases, the unit group and the class group of arbitrary algebraic number fields. Contents: Introduction • Topics from finite fields • Arithmetic and polynomials • Factorization of polynomials • Topics from the geometry of numbers • Hermite normal form • Lattices • Reduction • Enumeration of lattice points • Algebraic number fields • Introduction • Basic Arithmetic • Computation of an integral basis • Integral closure • Round-Two-Method • Round-Four-Method • Computation of the unit group • Dirichlet's unit theorem and a regulator bound • Two methods for computing r independent units • Fundamental unit computation • Computation of the class group • Ideals and class number • A method for computing the class group • Appendix • The number field sieve • KANT • References • Index

Rese�a del editor

Computational algebraic number theory has been attracting broad interest in the last few years due to its potential applications in coding theory and cryptography. For this reason, the Deutsche Mathematiker Vereinigung initiated an introductory graduate seminar on this topic in D�sseldorf. The lectures given there by the author served as the basis for this book which allows fast access to the state of the art in this area. Special emphasis has been placed on practical algorithms - all developed in the last five years - for the computation of integral bases, the unit group and the class group of arbitrary algebraic number fields. Contents: Introduction � Topics from finite fields � Arithmetic and polynomials � Factorization of polynomials � Topics from the geometry of numbers � Hermite normal form � Lattices � Reduction � Enumeration of lattice points � Algebraic number fields � Introduction � Basic Arithmetic � Computation of an integral basis � Integral closure � Round-Two-Method � Round-Four-Method � Computation of the unit group � Dirichlet's unit theorem and a regulator bound � Two methods for computing r independent units � Fundamental unit computation � Computation of the class group � Ideals and class number � A method for computing the class group � Appendix � The number field sieve � KANT � References � Index

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