The main purpose of this book is to show how some general algebraic ideas can be applied to give concrete results. For example, one of the main themes is that of factorization into primes and it is studied in detail in the context of polynomials and quadratic integers before being used to give results about which whole numbers can be expressed as sums or differences of squares.
The main purpose of this book is to show how some general algebraic ideas can be applied to give concrete results. For example, one of the main themes is that of factorization into primes and it is studied in detail in the context of polynomials and quadratic integers before being used to give results about which whole numbers can be expressed as sums or differences of squares.Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.
Preface 1 Polynomials in one variable 1.1 Polynomials with rational coefficients 1.2 Polynomials with coefficients in Zp 1.3 Polynomial division 1.4 Common divisors of polynomials 1.5 Units, irreducibles and the factor theorem 1.6 Factorization into irreducible polynomials 1.7 Polynomials with integer coefficients 1.8 Factorization in Zp [x] and applications to Z[x] 1.9 Factorization in Q[x] 1.10 Factorizing with the aid of the computer Summary of chapter 1 Exercises for chapter 1 2 Using polynomials to make new number fields 2.1 Roots of irreducible polynomials 2.2 The splitting field of xP" x in Zp [x] Summary of chapter 2 Exercises for chapter 2 3 Quadratic integers in general and Gaussian integers in particular 3.1 Algebraic numbers 3.2 Algebraic integers 3.3 Quadratic numbers and quadratic integers 3.4 The integers of Q( J=T) 3.5 Division with remainder in Z[i] 3.6 Prime and composite integers in Z[i] Summary of chapter 3 Exercises for chapter 3 4 Arithmetic in quadratic domains 4.1 Multiplicative norms 4.2 Application of norms to units in quadratic domains 4.3 Irreducible and prime quadratic integers 4.4 Euclidean domains of quadratic integers 4.5 Factorization into irreducible integers in quadratic domains Summary of chapter 4 Exercises for chapter 4 5 Composite rational integers and sums of squares 5.1 Rational primes 5.2 Quadratic residues and the Legendre symbol 5.3 Identifying the rational primes that become composite in a quadratic domain 5.4 Sums of squares Summary of chapter 5 Exercises for chapter 5 Appendices 1 Abstract perspectives 1.1 Groups 1.2 Rings and integral domains 1.3 Divisibility in integral domains 1.4 Euclidean domains and factorization into irreducibles 1.5 Unique factorization in Euclidean domains 1.6 Integral domains and fields 1.7 Finite fields 2 The product of primitive polynomials 3 The Mobius function and cyclotomic polynomials 4 Rouches theorem 5 Dirichlet's theorem and Pell's equation 6 Quadratic reciprocity References Index.
Preface 1 Polynomials in one variable 1.1 Polynomials with rational coefficients 1.2 Polynomials with coefficients in Zp 1.3 Polynomial division 1.4 Common divisors of polynomials 1.5 Units, irreducibles and the factor theorem 1.6 Factorization into irreducible polynomials 1.7 Polynomials with integer coefficients 1.8 Factorization in Zp [x] and applications to Z[x] 1.9 Factorization in Q[x] 1.10 Factorizing with the aid of the computer Summary of chapter 1 Exercises for chapter 1 2 Using polynomials to make new number fields 2.1 Roots of irreducible polynomials 2.2 The splitting field of xP" x in Zp [x] Summary of chapter 2 Exercises for chapter 2 3 Quadratic integers in general and Gaussian integers in particular 3.1 Algebraic numbers 3.2 Algebraic integers 3.3 Quadratic numbers and quadratic integers 3.4 The integers of Q( J=T) 3.5 Division with remainder in Z[i] 3.6 Prime and composite integers in Z[i] Summary of chapter 3 Exercises for chapter 3 4 Arithmetic in quadratic domains 4.1 Multiplicative norms 4.2 Application of norms to units in quadratic domains 4.3 Irreducible and prime quadratic integers 4.4 Euclidean domains of quadratic integers 4.5 Factorization into irreducible integers in quadratic domains Summary of chapter 4 Exercises for chapter 4 5 Composite rational integers and sums of squares 5.1 Rational primes 5.2 Quadratic residues and the Legendre symbol 5.3 Identifying the rational primes that become composite in a quadratic domain 5.4 Sums of squares Summary of chapter 5 Exercises for chapter 5 Appendices 1 Abstract perspectives 1.1 Groups 1.2 Rings and integral domains 1.3 Divisibility in integral domains 1.4 Euclidean domains and factorization into irreducibles 1.5 Unique factorization in Euclidean domains 1.6 Integral domains and fields 1.7 Finite fields 2 The product of primitive polynomials 3 The Mobius function and cyclotomic polynomials 4 Rouches theorem 5 Dirichlet's theorem and Pell's equation 6 Quadratic reciprocity References Index.
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