solve fast Let D be a finite-dimensional division ring over its center Z(D), which is a finite field Fq.a) Prove that D is a finite field extension of Z(D) and determine its degree. Utilize Wedderburn'stheorem in your analysis.b) Show that every finite division ring is commutative, thereby concluding that D is a field.Provide a detailed proof referencing relevant theorems.c) Investigate the structure of the multiplicative group D*. Determine its properties, such asbeing cyclic or abelian, and justify your conclusions.d) Explore the automorphism group Aut(D) of the division ring D. Describe its structure anddetermine whether all automorphisms are inner or if outer automorphisms exist.e) Examine the module theory over D by classifying all simple D-modules. Provide proofs foryour classifications and discuss their significance in the broader context of module theory.

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Answered: Let D be a finite-dimensional division…

Elements Of Modern Algebra

8th Edition

ISBN:9781285463230

Author:Gilbert, Linda, Jimmie

Publisher:Gilbert, Linda, Jimmie

Chapter6: More On Rings

Section6.3: The Characteristic Of A Ring

Problem 8E: 8. Prove that the characteristic of a field is either 0 or a prime.

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