Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

In the proof of Theorem I(c) from this paper (pdf) (original zip), there is a proposition that says:

So by our choice of $g$ we get $\theta/p \mid \psi/p$ whence $\theta \mid \psi$.

(this is the 3rd complete sentence on the right-hand column of p. 204)

How do I use the "So by our choice of $g$ we get"? Why does $g$ not have any other degree? Why is the choice small as possible thus contravening c)?

share|cite|improve this question
Your chances of getting an answer may increase considerably if you put a minimal amount of effort into stating your question clearly. That might include stating that you're referring to a paper before starting the question with "in the preliminaries section", and also placing word spacing and punctuation correctly. – joriki Sep 20 '11 at 14:28
And is it possible to find a proper reference to the paper instead of (or at least, in addition to) uploading a zip file? (I hate zip files. They invariably do not work for me. :=)) – Srivatsan Sep 20 '11 at 15:12
Agree with Srivatsan. Zip-file is too much effort. With the SW I have, I would first need to download the file to my computer, then unzip it, and only then I could take a look. Sorry, will not do. If I were sure this is about the kind of coding theory that I know about, I might unzip it. But even the notation is all Greek to me! So it may be source coding as opposed to channel coding? – Jyrki Lahtonen Sep 20 '11 at 17:40

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.