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Martin Sleziak
Martin Sleziak
7:24 AM
@Andrews When you say mirror-symmetry you probably mean mirror symmetry in string theory, right?
This is an area I know nothing about - so I cannot offer much beyond the observation that there is a tag mirror-symmetry on MathOverflow. The tag-excerpt says just: "A relation between two Calabi–Yau manifolds in string theory."
Possibly a reasonable thing to do might be to wait to see whether somebody responds here in chat. And if nobody responds here, then you could get some feedback by posting the proposal to create the tag in the tag management thread.
 
Andrews
Andrews
7:47 AM
@MartinSleziak Yes, and mirror symmetry is not only a branch of string theory in physics. Mathematically, mirror symmetry says there's a correspondence between complex geometry and symplectic geometry, although they look so different apparently.
Here is an introductory to mirror symmetry mathematically, and it can be studied without knowledge of string theory in physics.
 
 
1 hour later…
Martin Sleziak
Martin Sleziak
9:02 AM
new-tag A new tag survival-analysis was created by gwg.
1
Q: Survival analysis: showing that the hazard rate function is approximately the probability of dying

gwgIf you're comfortable with survival analysis, please feel free to skip to the Question section. Otherwise, I set up notation for my question here. Setup Let $L$ be a nonnegative continuous random variable such that $$ \mathbb{P}\{L \geq t\} = e^{-H(t)} = e^{- \int_0^t h(s) ds} $$ where $H(t)$...

probability statistics survival-analysis
Survival analysis
Survival analysis is a branch of statistics for analyzing the expected duration of time until one or more events happen, such as death in biological organisms and failure in mechanical systems. This topic is called reliability theory or reliability analysis in engineering, duration analysis or duration modelling in economics, and event history analysis in sociology. Survival analysis attempts to answer questions such as: what is the proportion of a population which will survive past a certain time? Of those that survive, at what rate will they die or fail? Can multiple causes of death or failure...
 
Andrews
Andrews
9:55 AM
And if I create tag [mirror-symmetry], is that a good idea to add this tag to previous questions (which might be aged)?
 
Martin Sleziak
Martin Sleziak
Maybe the comments here might give you some advice on that: chat.stackexchange.com/rooms/3740/conversation/…

Retagging with newly created tag (how fast and other advice)

Dec 6 '17 at 13:40, 20 minutes total – 28 messages, 3 users, 3 stars

Bookmarked Dec 9 '17 at 8:25 by Martin Sleziak

tag-suggestion If somebody knowledgeable of this area is around, what do you think about the proposed mirror-symmetry tag? See Andrews' comments above.
Mirror symmetry (string theory)
In algebraic geometry and theoretical physics, mirror symmetry is a relationship between geometric objects called Calabi–Yau manifolds. The term refers to a situation where two Calabi–Yau manifolds look very different geometrically but are nevertheless equivalent when employed as extra dimensions of string theory. Mirror symmetry was originally discovered by physicists. Mathematicians became interested in this relationship around 1990 when Philip Candelas, Xenia de la Ossa, Paul Green, and Linda Parkes showed that it could be used as a tool in enumerative geometry, a branch of mathematics concerned...
Homological mirror symmetry
Homological mirror symmetry is a mathematical conjecture made by Maxim Kontsevich. It seeks a systematic mathematical explanation for a phenomenon called mirror symmetry first observed by physicists studying string theory. == History == In an address to the 1994 International Congress of Mathematicians in Zürich, Kontsevich (1994) speculated that mirror symmetry for a pair of Calabi–Yau manifolds X and Y could be explained as an equivalence of a triangulated category constructed from the algebraic geometry of X (the derived category of coherent sheaves on X) and another triangulated categ...
What has been said so far in this chatroom can be seen here: About (mirror-symmetry) tag. (I will expand the bookmarked conversation as the discussion continues.)
Anyway - as I said before - if you get no response here it might be reasonable to ask on meta.
 
Feeds
Feeds
10:11 AM
0
A: Tag management 2019

AndrewsProposal: create "mirror symmetry" tag mirror symmetry is already a tag in MO, and there're already several questions about it now in MSE: (1), (2), (3), (4), (5). I know I have the privilege to create this tag, just to make sure it's useful and necessary enough :) And here is an introductory ...

 
Martin Sleziak
Martin Sleziak
10:26 AM
@Andrews I will just add that you can use the syntax [tag:tagname] tagname and (or for tags on meta [meta-tag:tagname] tagname.) This is also mentioned in the intro to Tag management 2019
> Also, note that one may use [tag:calculus] for calculus, i.e. tags on the main site, and [meta-tag:discussion] for discussion, i.e. for tags on the meta site.
There you can see also how it is rendered in posts.
 
 
1 hour later…
Martin Sleziak
Martin Sleziak
11:54 AM
new-tag A new tag mean-value-theorem was created by Holding Arthur. This tag was previously created and removed, see also: Tag proposal: mean-value-theorem. So I think it is safe to remove the tag. I have edited the tags on that post.
 

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