Context : This post is the second of a series of posts taking their
origins from the exercises in the Revuz and Yor's Book "Continuous
Martingales ans Brownian Motion". The reason for doing so is that the
exercises of this book are hard sometimes very hard but still very
interesting an...
@JohnOmielan @XanderHenderson: Besides rolling back, you should flag it for moderator attention as per this, especially if it is repeated vandalism like here.
@XanderHenderson That's a bit of a conundrum. I've never found the idea of systematically adding statements and solutions for a series of questions in a book appealing... although we might accomplish that anyhow in the due course of events. On one hand self-answered questions are OK, especially if the user isn't sure about the correctness of their solution. On the other hand, posting and answering when you have no doubt about the correctness seems worse, but potentially sometimes useful.
(cont'd) So don't rule those out. Maybe the worst case is systematically posting many self-answered questions without any real doubt about their correctness. That seems to drop below the threshold of acceptability, somehow.
Looks like that particular user has posted three questions in that vein? If they don't have designs for a lot more, then I guess I'd say let it slide.
There was also a recent question on meta about errata: How does one handle books without errata? We'll see whether there will be some feedback on this. (It's similar in to the question about solution manual in the sense that it would be a single question devoted to a specific book - but with a different purpose.) A few links to older discussions about errata can be found in the comments the that question.
There really ought to be a math errata website. If I had to do it, I'd use it to connect mistakes with citations to corrections, rather than store the corrections themselves. The citations, of course, could be links to already-written errata sheets online, of course. Sorry for the digression.
Since several of the posts on (meta) MSE/MO mentioned Math Book Notes Wiki , I thought that this might cause a few participants coming from here. That didn't happen.
Anyway, this seems to be diverging from the purpose of this room - so we should probably continue elsewhere. However, I don't think there is too much to be added.
There was a question I asked some time ago which I answered myself and could be useful to other readers on MSE but is deleted I noticed today.. I couldn't find it on my laptop also, but I really want the answer I posted on MSE back so that I never have to type it again. It was a post about finding the minimal polynomial of the element $\xi_7+\xi_7^{-1}$ I think.
At least it had something to do with the minimal polynomial of $cos(2\pi/7)$ or maybe another number in the place of 7. Can moderators find that for me? Maybe they can also warn me whether there are other deleted posts (I answer my own questions from time to time....)
Context : This post is the second of a series of posts taking their
origins from the exercises in the Revuz and Yor's Book "Continuous
Martingales ans Brownian Motion". The reason for doing so is that the
exercises of this book are hard sometimes very hard but still very
interesting an...
