Double Referencing in arXiv I am writing two separate paper that are closely related. When I try to submit to arXiv, is it possible for each paper to refer to the other paper with an arXiv link, rather then putting a newer version of one of them just to replace the arXiv link in the reference? Since I heard from others that too many frequent update to a new paper is not preferable. 
So, what is the usual practice in case such situation happens?
 A: I asked the arxiv administrators about this last year, and received the following reply.

Dear Scott,
Thank you for your feedback.  At this time we have no plans to change 
the way the submission ID and the final arXiv ID are created.  We 
developed the new submission system to be more flexible for our users 
who need an area to work on their submission and conduct any updates for 
formatting/layout/typos without being constrained on time.  Hence, we 
can not issue an arXiv ID until the submission has been announced.
We are looking into ways to make a submission available to all the 
co-authors but can not provide a time frame when this feature will be 
added.  We have received feedback that validates the need to be able to 
share a submission before it is announced and we are working on a solution.
--
arXiv admin
On 07/07/2010 11:38 AM, Scott Morrison wrote:

Keyword: "submit/0016922"
Dear arxiv admins,
I'm concerned about two ways in which the new submission system is
  inferior to the old one (mostly, though, it's great!)
First, we used to be told what the arxiv identifier would be. Now
  we're just given a temporary identifier, like submit/0016922. This is
  a problem for me, as I always used to include the arxiv identifier in
  my paper (usually as a footnote, e.g. "This paper is available at
  http://arxiv.org/... and at ..."). It will actually be a
  real problem, presently: my coauthors and I have 3 related papers that
  we want to put on the arxiv simultaneously. We'd like to be able to
  refer from one paper to the others, but it seems now there's no way to
  do this without submitting a second version the next day, because we
  can't discover what the identifiers will be.
Second, it's somewhat annoying that there's no way for a coauthor to
  see the submitted paper before it is announced. In the past, we would
  always have someone other than the submitter carefully check the
  produced PDF, abstract, etc., but it's now much harder to do this.
I'm not sure if it's possible for you to remedy either of these
  problems, but I would encourage you to try!
scott

