Estb. 1882

University of the Punjab

MATH-423 Number Theory-II

Quadratic Residues  Composite moduli, Legendre symbol
 Law of quadratic reciprocity
 The Jacobi symbol
Diophantine Equations
 Equations and Fermat’s conjecture for n = 2, n = 4
Algebraic Number Theory
 Polynomials over a field
 Divisibility properties of polynomials
 Gauss’s lemma
 The Einstein irreducibility criterion
 Symmetric polynomials
 Extensions of a field
 Algebraic and transcendental numbers
 Bases and finite extensions, properties of finite extensions
 Conjugates and discriminants
 Algebraic integers in a quadratic field, integral bases
 Units and primes in a quadratic field
 Ideals, arithmetic of ideals in an algebraic number field
 The norm of an ideal, prime ideals, units of algebraic number field
Credit hours/ Marks:- 3

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