By Gabriel Daniel Villa Salvador

ISBN-10: 0817644806

ISBN-13: 9780817644802

The fields of algebraic capabilities of 1 variable seem in different parts of arithmetic: complicated research, algebraic geometry, and quantity idea. this article adopts the latter point of view via employing an arithmetic-algebraic point of view to the learn of functionality fields as a part of the algebraic conception of numbers, the place a functionality box of 1 variable is the analogue of a finite extension of *Q*, the sphere of rational numbers. the writer doesn't forget about the geometric-analytic facets of functionality fields, yet leaves an in-depth exam from this attitude to others.

Key issues and contours:

* includes an introductory bankruptcy on algebraic and numerical antecedents, together with transcendental extensions of fields, absolute values on *Q*, and Riemann surfaces

* specializes in the Riemann–Roch theorem, protecting divisors, adeles or repartitions, Weil differentials, category walls, and more

* contains chapters on extensions, automorphisms and Galois idea, congruence functionality fields, the Riemann speculation, the Riemann–Hurwitz formulation, purposes of functionality fields to cryptography, type box conception, cyclotomic functionality fields, and Drinfeld modules

* Explains either the similarities and primary ameliorations among functionality fields and quantity fields

* comprises many workouts and examples to augment knowing and encourage additional study

The merely necessities are a simple wisdom of box conception, advanced research, and a few commutative algebra. The publication can function a textual content for a graduate direction in quantity idea or a complicated graduate themes direction. on the other hand, chapters 1-4 can function the bottom of an introductory undergraduate direction for arithmetic majors, whereas chapters 5-9 can aid a moment direction for complicated undergraduates. Researchers attracted to quantity concept, box thought, and their interactions also will locate the paintings an exceptional reference.