Cassels and Fröhlich. First printed in , this book has been essential reading for aspiring algebraic number theorists for more than. Solutions to the Cassels-Fröhlich exercises. Dorian Ni. May First of all, many thanks to Kevin Buzzard for his kind help, and for his willingness to answer . Cassels–Froehlich errata. July 18, Consider what God has done: Who can straighten what he has made crooked? Ecclesiastes 1 These errata.

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Discussion on this thread is happening here at the meta. I posted everything in one “burst” so as to only bump this post to the top one last time. Pagelast line of Exercise 5.

## Introduction to Algebraic Number Theory

Anton and Ilya have suggested that really this would be better if it had one big answer rather than lots of smaller ones. Pageline 9: In my copy of the book, the footnote does not refer to Stalin.

I think the “action” they define is not an action, and I think the first couple of sentences of section 4 should be: Page 54, line The Brauer argument below makes it all moot.

Pagelast line before section 2.

The letter Z in Z[zeta] should be csasels boldface. Pageline 5: What I will do now is to compile everything I have now on the basis that I am not expecting much more into one pdf list, and post a link to it. I recall also having trouble getting the signs in part 14 of that exercise on cubic reciprocity to work out, perhaps because of the mess of algebra, perhaps because some of the computations depend on part Post Your Answer Discard By clicking cassells Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Actually, I think the entire proof of Prop. If this thread does get closed, feel free to email comments to buzzard at imperial. I did at the present occasion not verify the correctness of those. I have a physical copy of the new printing of the book. Pagelast line before Corollary 1: Here, completely unedited, is the bulk of an email I just got from Rene Schoof. This is a delicate one. Below my 51 errata that I didn’t see on your list or in William Stein’s mail yet.

I remember Serre explaining long ago that the reference to Stalin was a mischievous joke linked to NATO’s sponsorship of the conference. But judging by the upvotes I have misjudged this.

On the other hand these partial lists have definitely been of help to some people, e. Page 78, line -8 display A. Pageline 6 of Lemma 4: Thanks to everyone that contributed.

If this definition is used then what the authors write seems to be OK.

### Math Introduction to Algebraic Number Theory

Pageline counting the footnote as Also, the proof is confused. After this point I KB will put all the errata we have caught into one file and the LMS will send it to the authors, asking for their approval. Z should be bold face.

Page 45, line 5: Q]and the definitions of f and g should subtracting some stuff. No correction is needed: Sign up using Facebook. This Proposition is misstated, and the proof has the wrong reference: By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Home Questions Tags Users Unanswered. I think I just found a typo in the definition of a co-induced module on p I did not do any proofreading of my list either!!

Sign up using Email and Password. Page 98, the lower “delta” in the diagram should have a “hat” the upper one has one, though it is barely visible in my copy. Page 3, Proposition 1. Here’s one I didn’t see on the list on mathoverflow: Dassels are of cassfls typographical nature, but some have mathematical substance. This actually seems to me an ideal use of the collected attention of Math Overflow to do something that helps the community more generally.

Pageline 2 after the diagram: