Any recommendations for a good self-study book on Galois groups?

In summary, a good book for self-study on group theory and Galois groups is "Stewart - Galois Theory" by Stewart.
  • #1
bigfooted
Gold Member
680
211
I want to get a decent introduction into group theory and Galois groups. Can somebody recommend a good book that I can use for self-study? The book of Stewart - Galois Theory looks promising.
 
Physics news on Phys.org
  • #2
Off the top of my head one thing that really stands out about Stewart's is the really thorough example of finding specific Galois groups & whatnot associated with [itex]x^4 - 2[/itex] over the rationals. It's not the only book that uses it as an example but in Stewart's it seems a lot more detailed than in others. I think I remember the rest being fairly user-friendly also. I guess there are worse books you could use for an intro. You might want to supplement with a book on group theory also.
 
  • #3
Thanks for your input. I'm thinking about supplementing this with the book 'abstract algebra' by Dummit and Foote.
I noticed that Stewart also has a lot of exercises with worked out solutions that will be helpful in self-study.
 
  • #4
I haven't studied galois at all but I was browsing the cambridge books they use and this stood out for some reason. It may or may not be useful but I didn't see the harm in mentioning it. These are the books that are deemed appropriate for the Cambridge Maths tripos Galois Theory Course(third course taken to do with groups):

E. Artin Galois Theory. Dover Publications (£6.99 paperback)
I. Stewart Galois Theory. Taylor & Francis Ltd Chapman & Hall/CRC 3rd edition (£24.99)
B. L. van der Waerden Modern Algebra. Ungar Pub 1949 (Out of print)
S. Lang Algebra (Graduate Texts in Mathematics). Springer-Verlag New York Inc (£38.50 hardback) I. Kaplansky Fields and Rings. The University of Chicago Press (£16.00 Paperback)

Stewart and Artin are both mentioned.

Groups, Rings and Modules(second course taken):

P.M.Cohn Classic Algebra. Wiley, 2000 (£29.95 paperback)
P.J. Cameron Introduction to Algebra. OUP (£27 paperback)
J.B. Fraleigh A First Course in Abstract Algebra. Addison Wesley, 2003 (£47.99 paperback)
B. Hartley and T.O. Hawkes Rings, Modules and Linear Algebra: a further course in algebra. Chapman
and Hall, 1970 (out of print)
I. Herstein Topics in Algebra. John Wiley and Sons, 1975 (£45.99 hardback)
P.M. Neumann, G.A. Stoy and E.C. Thomson Groups and Geometry. OUP 1994 (£35.99 paperback) M. Artin Algebra. Prentice Hall, 1991 (£53.99 hardback)

Group Theory(first course taken - may be basic(?)):

M.A. Armstrong Groups and Symmetry. Springer–Verlag 1988 (£33.00 hardback)
† Alan F Beardon Algebra and Geometry. CUP 2005 (£21.99 paperback, £48 hardback).
R.P. Burn Groups, a Path to Geometry. Cambridge University Press 1987 (£20.95 paperback)
J.A. Green Sets and Groups: a first course in Algebra. Chapman and Hall/CRC 1988 (£38.99 paper-
back)
W. Lederman Introduction to Group Theory. Longman 1976 (out of print)
Nathan Carter Visual Group Theory. Mathematical Association of America Textbooks (£45)

This may be of some use...

Again, sorry if it's absolutely worthless. :-p
 
  • #6
the one from David Cox is a good read.
 
  • #7
Thanks for all your suggestions. The Cambridge list is definitely helpful, because for me it's sometimes difficult to see the difference in level between the different books. Cox' book also looks interesting. The book of Tignol also looks nice, I like the historical approach. The book of Artin seems to be a classic, but just looking at the pages strains my eyes.
I am also checking some online material on galois theory, the one from Miles Reid looks good.
 

Related to Any recommendations for a good self-study book on Galois groups?

1. What is a Galois group?

A Galois group is a mathematical concept named after the French mathematician Évariste Galois. It is a group of automorphisms that preserve the algebraic structure of a field extension. In simpler terms, it is a group of symmetries that allow us to understand the roots of a polynomial equation.

2. Why is understanding Galois groups important?

Understanding Galois groups is important because it allows us to solve polynomial equations and study the properties of fields. It also has applications in other fields such as cryptography and coding theory.

3. What are some examples of Galois groups?

Some examples of Galois groups include the permutation group Sn for degree n, the cyclic group Cn for degree n, and the dihedral group Dn for degree n. These groups have different structures and properties, and studying them can provide insights into the behavior of polynomial equations.

4. How can I learn about Galois groups?

There are many resources available for learning about Galois groups, including textbooks, online courses, and lectures. It is recommended to have a solid foundation in abstract algebra before diving into the study of Galois groups.

5. Are there any practical applications of Galois groups?

Yes, there are various practical applications of Galois groups in fields such as coding theory, cryptography, and number theory. For example, Galois groups are used in error-correcting codes in telecommunication systems and in encryption algorithms for secure communication.

Similar threads

Replies
11
Views
2K
  • Science and Math Textbooks
Replies
2
Views
484
  • Science and Math Textbooks
Replies
6
Views
2K
  • Science and Math Textbooks
Replies
14
Views
4K
Replies
12
Views
2K
  • Science and Math Textbooks
Replies
3
Views
2K
  • Science and Math Textbooks
Replies
9
Views
2K
  • Science and Math Textbooks
Replies
3
Views
310
  • Science and Math Textbooks
Replies
4
Views
1K
  • Science and Math Textbooks
Replies
7
Views
773
Back
Top