Databases for sequences indexed by partitions

Is there a database for sequences indexed by partitions similar to Sloane’s OEIS? I mean, I am aware that in the OEIS there are some arrays indexed by partitions, but I feel as though most of such sequences that frequently appear in combinatorial literature are not there. One example of a sequence I’d really like … Read more

Resource request on “$\in$-homomorphisms” in Set Theory

Very loosely put, this is the intuitive idea behind an $\in$-homomorphism: Let $\mathcal{U}$ and $\mathcal{W}$ be universes of sets. A function $f \colon \mathcal{U} \to \mathcal{W}$ is said to be an $\in$-homomorphism if $f(X) = \{f(T) \in \mathcal{W} | T \in X \}$ for all $X \in \mathcal{U} $ Thomas Jech briefly mentions this concept … Read more

A centralised website for computational attempts in graph theory and metric geometry?

The set of questions below stems from this question. 1) does a website exist that contains (at least links to) code and data files, with the aim to centralise computational results in graph theory (or more generally metric geometry), both definite ones and unsuccessful/partial ones? (Note that the Open Problem Garden website only lists statements … Read more

Online study groups for individual mathematical texts

This has been one of my earlier academic dreams. I have pitched the idea to Prof Ravi Vakil, among others. Recently, because of participation in the mathematical competition hosted by Alibaba, I have decided to revive my decade-old enthusiasm. The basic idea is as follows. Many mathematical texts are difficult to penetrate on one’s own, … Read more

Mirror site for the NIST Digital Library of Mathematical Functions (DLMF)

For research I use the NIST Digital Library of Mathematical Functions (https://dlmf.nist.gov/) quite often for looking up basic facts about special functions. At the moment, however, this gives Sorry, but due to fact that the federal government is currently shut down, the website dlmf.nist.gov will be unavailable until further notice. Does anyone know if the … Read more

What has happened with the Publications of the $n$Lab?

What has happened with the Publications of the $n$Lab? They seem to have published only a couple of articles back in 2011, 2012. A little search i made was not very enlightening. Has the project been discontinued? If yes why? (In principle, the idea seemed to be pursuing an alternative, electronic, publishing system with a … Read more

The Stacks project

I have a question concerning the admirable Stacks Project. Which comparable projects are there: approach-wise: “an open source textbook on algebraic stacks and the algebraic geometry that is needed to define them”, i.e. projects as “an open source textbook on X and the Y that is needed to define (and understand) X” technical-wise [Side question: … Read more

Can the Math 2.0 Forum’s Closure be prevented? [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for MathOverflow. Closed 4 years ago. Improve this question Apologies if this is not regarded as suitable for MO, but I have noticed other “soft” questions and feel this deserves some attention by … Read more