I am a 3rd-year computer science PhD student and I have recently written and submitted a paper to a theoretical conference. It has been accepted; but the reviews were not very in-depth. Usually they were of the form: "I didn't check the proofs but the statement sounds reasonable."

Now I have to say that we work on a very complicated topic in which there are maybe just a few experts worldwide; and even for those it would have probably taken them a few weeks if they were to check the proofs in depth. In light of this I was not very surprised that most of them just took a quick glance.

While preparing the presentation, however, I myself noticed a mistake which is not easily solvable. I did find a solution, however, that keeps the main proof structure intact, but one of the main definitions has to be changed.

I asked my professor what we should do about the paper, and he said to leave it be and publish the corrected version in a journal later. However, I still feel kind of uneasy pretending as if nothing happened. What would be the ethical approach? I realize that it is probably not possible to "stop the presses", but should I notify the conference organizers about it in any way? Or should I mention it in my talk?

  • Did you send the camera ready yet, or not?
    – Alexandros
    Commented Jun 23, 2015 at 8:49
  • All is sent, only the conference did not take place yet.
    – HdM
    Commented Jun 23, 2015 at 8:55
  • If I was you and discovered the error before the camera ready was sent, I would fix it there. Now, that everything is sent I am not sure what you can do. Preparing a new correct version to upload on arxiv and cite the arxiv version on your future work would be one option. How good is this conference?
    – Alexandros
    Commented Jun 23, 2015 at 9:00
  • 3
    Depending on how technical the fix is (the fix, not the mistake), I guess you could mention it in your talk. For example, if you planned to give that definition on a slide anyway, give the fixed one, and maybe mention that it is different from the one in the paper because of a minor mistake in the proof. If it is too technical to go on a slide, don't mention it, the audience won't care anyway. And maybe have a printed sketch of the new proof at hand should one of the experts approach you about this.
    – T. Verron
    Commented Jun 23, 2015 at 9:23

1 Answer 1


This is what errata are for.

I had something like this happen to me with one of my early papers. For that paper, I knew the result was likely to be significant, so I knew I did not want to let the paper stand with an error in it. It was too late to correct for the conference proceedings, but I could correct the archival version that ended up in the ACM Digital Library, and I did.

Every (reputable) publisher has its own procedure for dealing with errata; you just need to figure out what it is and follow it. Following this process is likely to be somewhat long and annoying, but if it's important to you to get it right, there's no reason not to do so.

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