Skip to main content

All Questions

Filter by
Sorted by
Tagged with
2 votes
1 answer
212 views

A more complete set of open problems

Over time, there have been a number of posts on open problems remaining in different fields of math, both here and on the MathSE. So I had the idea of trying to construct a “list of lists” of problems ...
Aidan W. Murphy's user avatar
16 votes
0 answers
428 views

Complete resource of Ngô's course notes on Algebraic Groups and Group Schemes

I'm looking for Ngô's M2 course notes on "Groupes algébriques et schémas en groupes". The Wayback Machine has an incomplete capture here. However, it apparently lacks chapter 1, 3, and 5. I ...
Modern_Hunter's user avatar
1 vote
1 answer
85 views

Where to find hard instances of subsetsum and other famous np-complete problems for testing heuristics against?

[Can move to cs or tcs stackexchange if thats a better home] I remember back around 2016 DIMACS used to host a list of problem instances of various famous problems in the NP-complete class and harder ...
Sidharth Ghoshal's user avatar
25 votes
7 answers
5k views

Where can I create nice looking graphics for a paper?

I’m currently writing my first paper, a little paper, and I’d like to have some nice graphics in it. Much of the proof work is tedious analysis and I’d like to give any potential reader visual ...
edward cornfoot's user avatar
6 votes
0 answers
746 views

How to learn homotopy theory

I studied some basic algebraic topology (homotopy/homology/cohomology groups). When reading about the Dold-Thom theorem, the fancier and more recent sources sooner or later all started to use homotopy ...
Georgonzola's user avatar
1 vote
1 answer
172 views

What is the website address that automatically shows related content instead of pointing to the paper or books [closed]

I was looking for vector bundles online, and I found a website that shows all the related results. By related results, I mean theorems/propositions/definitions, etc. It is not ProjectEuclid, which ...
RanWang's user avatar
  • 119
4 votes
0 answers
224 views

Online encyclopedia of categories?

Being new to categories and mostly interested in specific categories such as the reverse derivative category, I'm wondering if there are any resources like the one for integer sequences and how might ...
Maylibooyah69's user avatar
2 votes
1 answer
135 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), ...
joaopa's user avatar
  • 3,996
195 votes
18 answers
17k 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 ...
2 votes
1 answer
314 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-...
user135626's user avatar
28 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 ...
77 votes
30 answers
6k 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://...
10 votes
0 answers
279 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 ...
Jules Lamers's user avatar
  • 1,996
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 ...
Hans-Peter Stricker's user avatar
3 votes
2 answers
449 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 ...
Peter Wildemann's user avatar
20 votes
4 answers
3k views

Online References for Cartan Geometry

I would like to learn more about Cartan Geometry ("les espaces généralisés de Cartan"). I ordered Rick Sharpe's book "Differential Geometry: Cartan's generalization...", which would take a long time ...
Malkoun's user avatar
  • 5,215
3 votes
2 answers
194 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 ...
Bobson Dugnutt's user avatar
3 votes
1 answer
334 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 $\Gamma(1)\backslash H$.
Alex Gavrilov's user avatar
9 votes
2 answers
873 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 ...
Sofia Tirabassi's user avatar
21 votes
6 answers
2k 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'...
65 votes
13 answers
20k views

Video lectures for algebraic geometry

Are there any good video lectures for studying algebraic geometry?
13 votes
5 answers
3k views

Online introduction to Lattice Theory?

Apart from J. B Nation's Notes on Lattice Theory, is there any other (mostly introductory) material on Lattices available online? NB: The last update of Nation's notes was 2017, as of Feb 2023.
adamo's user avatar
  • 343
9 votes
3 answers
990 views

Is there a list of all connected T_0-spaces with 5 points?

Is there some place (on the internet or elsewhere) where I can find the number and preferably a list of all (isomorphism classes of) finite connected $T_0$-spaces with, say, 5 points? In know that a $...
Rasmus's user avatar
  • 3,174
29 votes
6 answers
1k views

Link Repository of International Dissertations

This question (cry for help?) grew out of Colin Tan's question: does anyone have a copy of schmid’s effective work on hilbert 17th? which was a request for a copy of an Habilitationsschrift. We've ...
14 votes
1 answer
2k views

Database of Steiner triple systems

Can anyone point me to an online database of Steiner triple systems? My Google-fu is only getting me to descriptions of the few smallest ones, mostly Google book scans (which are rather useless to ...
Mariano Suárez-Álvarez's user avatar