Questions tagged [online-resources]

For questions seeking recommendations for online mathematics resources that are useful at a research level.

Filter by
Sorted by
Tagged with
12 votes
5 answers
2k views

Resources where I can find open problems in number theory along with their level of difficulty

I have completed my master's in mathematics a couple of years ago and due to very strong personal and professional reasons I couldn't get admitted to grad school despite having a good academic ...
3 votes
0 answers
97 views

Topologically characterizing metrizable spaces

There are some well-known theorems that imply that some metrizable spaces, when satisfying other topological properties, are unique up to homeomorphism. Here are a few examples, where "perfect&...
user avatar
2 votes
1 answer
128 views

IOPsciences and a missing reference

My university has a subscription at IOPSciences I am interesting in this article: Galochkin A.I. (1984): On estimates, unimprovable with respect to height, of some linear forms. Mat. Sb. 124 (166), ...
user avatar
  • 2,997
13 votes
4 answers
2k views

How do you generate math figures for academic papers?

Good day! I am looking for any tool that would allow me to generate a figure similar to the figures embedded in the paper by King et al. (2020) titled "Trigonometry: a brief conversation." ...
user avatar
12 votes
0 answers
357 views

Where to upload digitized LaTeX versions of old papers?

Let's say I took the time to convert into proper modern LaTeX a few old math papers (which cannot be found online, or only in poorly scanned versions which are hard to read due to this). If someone ...
user avatar
  • 529
2 votes
0 answers
144 views

Ultra math search engine [duplicate]

Does anyone know searching engine for arxiv.org math formulas? Like https://www.searchonmath.com and https://approach0.xyz/search/ In my opinion, we should have a search engine that can find formulas ...
user avatar
6 votes
2 answers
354 views

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 $...
user avatar
  • 61
20 votes
2 answers
1k views

sci.math.research archive?

Does there exist an archive somewhere of posts to the USENET newsgroup sci.math.research? The best approximation I'm aware of is Google Groups. However, despite ...
2 votes
2 answers
233 views

Are old issues of math journals from Belarus Academy of Sciences available online?

I am interested in some papers in Russian which have appeared in the journals "Doklady Akademii Nauk BSSR" and "Vestsi Akademii Navuk BSSR". Are scanned copies available? I could ...
user avatar
  • 3,048
185 votes
18 answers
12k views

Great graduate courses that went online recently

In 09.2020 by pure chance I discovered the YouTube channel of Richard Borcherds where he gives graduate courses in Group Theory, Algebraic Geometry, Schemes, Commutative Algebra, Galois Theory, Lie ...
3 votes
0 answers
276 views

How to put a monetary incentive on an open research problem? [closed]

Since the old days, many famous mathematicians have been attaching monetary rewards to problems. I would like to put monetary bounties on some research mathematics problems. Some of those problems ...
1 vote
1 answer
104 views

Can any one suggest a very basic book for fuzzy graph theory?

Can anyone help with a very basic book on fuzzy graph theory for a beginner to it with good explanations. Any video course online on fuzzy graph theory extensively to help understand please share link....
user avatar
  • 81
1 vote
0 answers
214 views

Online courses for mathematics [closed]

I'm sorry if I'm posting this in the wrong forum. My background is in biology and medicine. I am looking to re-learn undergraduate-level mathematics, in particular discrete mathematics, calculus, and ...
user avatar
31 votes
3 answers
1k views

Wiki for consequences of axiom of choice?

I raised the following question as part of another MO question, but I am following the suggestion of Nate Eldredge to make it a question in its own right. For many years, there has a been a valuable ...
user avatar
  • 64.1k
31 votes
2 answers
1k views

Wayback Machine for mathematics?

I have had a couple of experiences recently which have made me wonder whether the mathematics community should try to establish and maintain something like the Wayback Machine, but specifically ...
user avatar
  • 64.1k
1 vote
1 answer
72 views

Recommendation for books on boundary-value problems that include perturbed boundaries and many solved problems

I am looking for a book or resource that contains applied math analytical methods and a lot of solved problems in Boundary-Value Problems for second-order PDEs, and if it could be related to wave-...
user avatar
3 votes
0 answers
253 views

Is the DispersiveWiki website down?

Somewhat recently I learned about a website called the DispersiveWiki which is/was maintained by James Colliander. I have found a few different links to the website from around the web (e.g. http://...
user avatar
7 votes
0 answers
222 views

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 ...
user avatar
  • 4,200
1 vote
0 answers
59 views

Solution of the Mason-Weaver equation in cylindrical coordinates

I'd like to know if there is some litterature about the cylindrical Mason-Weaver equation. The basic Mason-Weaver equation is treated in Wikipedia : $$\partial_t f(t,x)=\partial_x f(t,x)+\partial_{...
user avatar
  • 121
29 votes
6 answers
1k views

Online events during the quarantine

With many places on earth subjected to quarantine and large gathering prohibited, there are announcements of online seminars and talks open to people around the world. The talks can be conducted via ...
71 votes
31 answers
5k views

Atlas-like websites on specific areas of mathematics

In this post, we look for the existing atlas-like websites providing well-presented classifications or database about some specific areas of mathematics. Here are some examples: GroupNames: https://...
14 votes
1 answer
394 views

Have the "Bayreuther Mathematische Schriften" ever been digitalized?

See update below. This is borderline off-topic (certainly not a research question), but the rather successful story of a similar question gives me hope. The Bayreuther Mathematische Schriften were a ...
user avatar
13 votes
4 answers
2k views

Is there a connection between representation theory and PDEs?

As a PhD student, if I want to do something algebraic / linear-algebraic such as representation theory as well as do PDEs, in both the theoretical and numerical aspects of PDEs, would this combination ...
user avatar
  • 149
8 votes
1 answer
670 views

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 ...
user avatar
8 votes
0 answers
218 views

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 ...
user avatar
  • 1,297
7 votes
1 answer
428 views

Polymath type websites for specialized areas

This question is inspired by the success and more importantly, the democratizing affect of the polymath projects and Mathoverflow. I put the idea in my NSF proposals a few times, but the panels don't ...
3 votes
0 answers
382 views

Eigenvectors of sum of SO(3) matrices

I asked this question before on MSE but go no answers. It seems that the problem is rather difficult so I thought of trying here. Given two matrices $A,B\in SO(n)$, each describing a rotation by ...
user avatar
  • 139
8 votes
2 answers
1k views

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 ...
user avatar
34 votes
2 answers
4k views

ICM 2018 lecture videos

Is there a place to watch ICM 2018 plenary lectures (and other lectures if possible)? Here is the official Youtube channel of the ICM but they don't seem to be posting the lectures. https://www....
user avatar
  • 3,212
2 votes
0 answers
82 views

Resource request: Moyal $\star$-product based calculations

I already asked two questions about the Moyal $\star$-product here and here but I think I'll have a lot more similar questions, so I'm wondering if anyone can help me with finding some good resources. ...
user avatar
  • 294
32 votes
2 answers
1k views

Is it possible to cite a page in n-Lab in a research paper?

One of the concepts I need in my paper is best summarized on the n-Lab page. I tried my best to find a similar description of the same concept in a more "classical" reference, such as a paper or a ...
user avatar
  • 271
10 votes
2 answers
1k views

Collection of Mathematical Constants

I recently stumbled over the large collection of mathematical constants of Mauro Fiorentini; it is in Italian and appears to be something in the vein of the famous OEIS, however maintained by a single ...
user avatar
9 votes
0 answers
1k views

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

Apologies if this is not regarded as suitable for MO, but I have noticed other "soft" questions and feel this deserves some attention by the community, and did not know where else this could be asked. ...
15 votes
1 answer
1k views

LMS Lectures on Geometric Langlands

Everybody knows how insightful are David Ben-Zvi talks (and comments/answers here on mathoverflow). I was trying to watch the LMS 2007 Lecture Series on Geometric Langlands by David, supposedly made ...
user avatar
  • 553
3 votes
2 answers
312 views

Resources on Elliptic Boundary Value Problems on manifolds

My situation: I am currently trying to understand Uhlenbecks results on the Yang Mills equation. One of the most common notions in this paper is that of an elliptic system or an elliptic boundary ...
user avatar
17 votes
4 answers
1k views

Examples of (Git) open math (texts) projects

I am an active part of a research project on the positive effects of open math projects on the community. With open math projects I have in mind a particular thing, namely a GIT project on mathematics ...
10 votes
3 answers
1k views

Web interface for GAP (or other computer algebra system dealing with finite groups)?

GAP is computer algebra system which allows to make calculations with finite groups. (See wikipedia link for an example). Is there web interface for it ? (I cannot google it.) Or may be some other ...
user avatar
3 votes
2 answers
163 views

What is known about the PDFs for the $\ell^2$-norm of these multivariate distributions?

I'm looking for resources giving the PDFs for the $\ell^2$-norm of various spherically symmetric, continuous multivariate distributions. For instance, the PDF for the $\ell^2$-norm of a multivariate ...
user avatar
11 votes
4 answers
2k views

Where is Seminaire Bourbaki on-line?

Where is Seminaire Bourbaki on-line? The reason I ask is that for years it was complicated-enough already to find it in traditional libraries, as it would be catalogued according to its venue or ...
user avatar
  • 21.2k
93 votes
5 answers
7k views

Is there a database for tracking the dependencies of mathematical theorems?

Given a proof for a result, one could denote the proof as a node on a graph, and then draw arrows to the node from axioms and previous results that the proof uses, and then draw arrows from the node ...
user avatar
  • 2,478
6 votes
1 answer
271 views

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 ...
user avatar
  • 873
1 vote
1 answer
349 views

Best way to find recent papers in a special field of mathematics?

My subjects of interest are Geometry of Banach spaces, renorming theory and fixed point theory. When I want to find recent papers in these fields of mathematics, mostly, I search name of paper, say, ...
user avatar
  • 763
11 votes
3 answers
717 views

"Database" of simplicial polytopes/spheres

Reading through various papers on polytopes I have come across really interesting examples of simplical polytopes and non-shellable (or non-PL) simplicial spheres but sometimes it is hard to keep ...
user avatar
19 votes
10 answers
2k views

Combinatorial Databases

At one point, I remember being excited by seeing the website Encyclopedia of Combinatorial Structures as an extension of Sloane's Online Integer Sequence Database site. Unfortunately, the site (ECS) ...
22 votes
3 answers
1k views

Which tools can identify scholarly papers that use the same types of equations?

Many types of equations are being used in multiple contexts, so a search for specific formulas might be one way to identify scholarly papers that are conceptually related. Is any website or tool ...
user avatar
1 vote
0 answers
178 views

Database of non-isomorphic trees

As there are several free prime number databases, is there something similar for non-isomorphic trees?
user avatar
3 votes
1 answer
310 views

A database on Maass forms?

Is there somewhere a database on Maass forms that includes eigenvalues, Taylor coefficients, etc...? I am mainly interested in classical forms on $\Gamma(1)\backslash H$.
user avatar
9 votes
2 answers
571 views

Where to find digitized old papers on the internet?

Following Murphy's law for the published material: "The paper you need is too old to be in the arXiv, it is not in any online database which your institution has subscription to, and... it not even in ...
user avatar
21 votes
6 answers
1k views

Online high quality colloquium talks

In my department we're thinking about showing online lectures one day per week at lunch, as sort of a virtual colloquium appropriate to mathematics undergraduates as well as faculty. To start with we'...
4 votes
2 answers
228 views

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 ...
user avatar