Arithmetic of Fields Safarevi C's Theorem on Solvable Groups as Galois Groups I

نویسندگان

  • Moshe Jarden
  • Roger Ware
چکیده

The organizers of the meeting were Wulf-Dieter Geyer (Erlangen) and Moshe Jarden (Tel Aviv). The 26 talks that were given during the conference fall (roughly) into several categories: 1. Fundamental groups and covers in characteristic p In the rst of two talks on the famous theorem of Safarevi c \Every nite solvable group occurs as a Galois group over a global eld" this result was composed with the related theorems of Scholz, Reichardt, and Neukirch and the idea of a simpliied proof was presented. In particular, a short proof of the so-called \shrinking lemma" was given and its applications to group cohomology were indicated.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The inverse Galois problem over formal power series fields

Introduction The inverse Galois problem asks whether every finite group G occurs as a Galois group over the field Q of rational numbers. We then say that G is realizable over Q. This problem goes back to Hilbert [Hil] who realized Sn and An over Q. Many more groups have been realized over Q since 1892. For example, Shafarevich [Sha] finished in 1958 the work started by Scholz 1936 [Slz] and Rei...

متن کامل

Course 311: Hilary Term 2006 Part IV: Introduction to Galois Theory

4 Introduction to Galois Theory 2 4.1 Polynomial Rings . . . . . . . . . . . . . . . . . . . . . . . . . 2 4.2 Gauss’s Lemma . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4.3 Eisenstein’s Irreducibility Criterion . . . . . . . . . . . . . . . 6 4.4 Field Extensions and the Tower Law . . . . . . . . . . . . . . 6 4.5 Algebraic Field Extensions . . . . . . . . . . . . . . . . . . . . 8 4....

متن کامل

Math 121 Notes: a Field Guide to Galois Theory

1. Vector Spaces: 1/7/13 1 2. Review of Math 120 I: Planting Seeds: 1/9/13 3 3. Review of Math 120 II: Harvesting Consequences: 1/11/13 4 4. Extending Fields by Adjoining Roots of Irreducible Polynomials: 1/14/13 5 5. Splitting Fields and Algebraic Closures: 1/16/13 6 6. Searching for Closure: 1/18/13 7 7. Separable Field Extensions: 1/23/13 9 8. Finite Fields and Roots of Unity: 1/25/13 10 9. ...

متن کامل

The Galois theory of orbits in arithmetic dynamics

Arboreal Galois groups sit naturally as subgroups of tree (or graph) automorphism groups, while dynatomic Galois groups are naturally subgroups of certain wreath products. A fundamental problem is to determine general conditions under which these dynamically generated Galois groups have finite index in the natural geometric groups that contain them. This is a dynamical analog of Serre’s theorem...

متن کامل

The Inverse Galois Problem, Hilbertian Fields, and Hilbert’s Irreducibility Theorem

In the study of Galois theory, after computing a few Galois groups of a given field, it is very natural to ask the question of whether or not every finite group can appear as a Galois group for that particular field. This question was first studied in depth by David Hilbert, and since then it has become known as the Inverse Galois Problem. It is usually posed as which groups appear as Galois ex...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1998