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7:10 AM

specific-question This question was recently bumped (edit to an answer): The maximum of a polynomial on the unit circle. It has the geometry tag which is deprecated. What would be a suitable replacement here? Or simply remove this tag and leave only the other ones?

Q: The maximum of a polynomial on the unit circle

Encouraged by the progress made in a recently posted MO problem, here is a "conceptually related" problem originating from a 2003 joint paper of Sergei Konyagin and myself. Suppose we are given $n$ points $z_1,...,z_n$ on the unit circle $U=\{z\colon |z|=1\}$ and $n$ weights $p_1,...,p_n\ge 0$ ...

4 hours later…

Martin Sleziak

11:00 AM

Recently created tag: graph-products.

Q: Existence of a class of graphs with a special property

In the following, suppose all graphs are simple and finite. For a given graph $G$, we denote its complement by $\overline{G}$. Let $*$ be a binary operation on graphs, such as Cartesian product, Kronecker product or etc. I am looking for to study the graphs which have the below property:$$\overli...

graph-theory graph-products

Other tags that were created not too long ago can be seen here: mathoverflow.net/tags?tab=new

1 hour later…

Martin Sleziak

12:09 PM

@ToddTrimble Since you happen in this room, I'll just check that I did not misrepresent in discussion about non-arxiv tags what you said here in chat.

@JulesLamers Todd Trimble promised in chat that he will talk a bit about this with François G. Dorais. So I hope we will see here an answer from one of these two users eventually. (It was not exactly this issue, but related to top-level tags - so I suppose that if they plan to discuss this, they'll touch also on this.) — Martin Sleziak Oct 30 at 18:01

And, in case you happen to have a bit of time, I'll also ask what you think about creation of a tag mathoverflow-inc tag (or some similar name) on meta for question of the kind I have mentioned here.

quid

12:50 PM

@MartinSleziak mg.metric-geometry imo is often a good enough substitute.

Martin Sleziak

Yes, I agree that it is the most usual choice. (Typically, anything which goes into "high-school geometry" - triangles, circles, angles etc. - or plane geometry could go under mg.metric-geometry, sometimes with adding also some other, more specific, tags.)

Still, I was not sure about this specific question, so I decided to ask here first.

After all, some of my past replacements (geometry) $\to$ (mg.metric-geometry) are a bit questionable according to more experienced users:

Sep 4 at 2:49, by Todd Trimble

@MartinSleziak My opinion is that it's a close call, but I wouldn't have picked mg.metric-geometry which I think of more as at an interface between analysis and geometry. It would have been okay to omit a geometry-related tag in this case. No harm done though.

I take it that the aspect of this specific question which was reason for including geometry tag is this:

> Although this is not obvious at first glance, this conjecture is actually about the maxima of polynomials on the unit circle.

Anyway, based on your recommendation I have replaced the tag. (I suppose that if more experienced users notice the edit or my question here in chat and they feel the tag is out of place, they will correct it.)

Todd Trimble

1:57 PM

@MartinSleziak No, I don't think you misrepresented me; thanks for the reminder. (I'd been busy with other things recently.) As for mathoverflow-inc, that seems fine.

Martin Sleziak

Thanks for the reply!

Of course, I can understand that you have other stuff to do. (And this is even more case for François G. Dorais, he mentioned some stuff from his personal life on meta.)

I have created mathoverflow-inc tag and suggested a very basic tag-info. (Of course, it would be nice if somebody who knows more about this adds further information there. And if there is a better name for the tag, I have no problem if it's changed.)

Unless somebody else does this before me, I will eventually retag also other questions about this topic that I found. But I will wait a bit before doing that.

One thing is that we probably do not want too many old questions to be bumped at the same time just because of a new tag. And, additionally, I'd prefer to wait and see whether other users who notice that there is new tag will suggest better name or removal of the tag before adding it to other posts.

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