-1
$\begingroup$

EDIT of the question by Will Jagy:

Is the binary quadratic form $x^2 - 3 y^2$ reduced? What are its proper integral automorphs?

  • 0
    Unless of course we allow unimodular substitutions to have $-1$ determinant...2012-01-13
  • 0
    But that wouldn't be in $\mathrm{SL}_2(\mathbb Z)$2012-01-13
  • 0
    Why do you delete the question? The answer here will not be of help to other users using the forum. Please do not delete questions for reasons that are now seen in the question section of this page!2012-01-13
  • 0
    @KannappanSampath the question was already deleted when I noticed it. I was curious enough to read the past edits, finding just the sort of thing that often confuses people. So I typed in a full answer. I think Frustrated is being a bit too hard on him/her self. The easiest version of reduction is the one I give...Do you want to edit in some version of the original question that makes Frustrated seem more curious and less "idiotic?"2012-01-13
  • 0
    @KannappanSampath I am Facebook friends with a first-year student at your school, named Koundinya Vajjha. He's funny.2012-01-13
  • 0
    I am a first-year student too. He is my friend as well. Why don't you join G+?2012-01-13
  • 0
    @KannappanSampath I have no idea what G+ means2012-01-13
  • 0
    @WillJagy G+ means that....that....hah... Google +2012-01-13
  • 0
    @KannappanSampath I looked it up http://en.wikipedia.org/wiki/Google%2B I do not pay much attention to this sort of thing. I only got on Facebook because a high-school classmate (class of 1974) started using it. There is some amusement to it, but, for example, I have no digital camera, no pictures to post. I can see that it is valuable for very busy people to let others keep track of them.2012-01-13

1 Answers 1