5:06 AM
@MartinSleziak The tag now contains three questions:
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This question is cross-posted from academia.stackexchange.com where it got closed with the advice of posting it on MO. Kevin Buzzard's slides (PDF version) at a recent conference have really unsettled me. In it, he mentions several examples in what one would imagine as very rigorous areas (e...

26

Some authors do a really great job by collecting errors and comments to their books and putting a list on their websites. I wonder if there is some (perhaps wiki-style) website where errata are collected. Does anybody know?

2

In Loomis and Sternberg's Advanced Calculus section 3.3 Continuity, they make this comment (just before Theorem 3.2, [pp. 128-129 in my copy): A linear map $T : V \rightarrow W$ is bounded below by $b$ if $\|T(\xi)\| \geq b \|\xi\|$ for all $\xi$ in $V$ [...] If $V$ is finite-dimensional, the...

Jan 31 at 22:14, by Martin Sleziak
The tag was created also back in 2016 by Shamisen and removed by Yemon Choi: https://mathoverflow.net/posts/13000/revisions https://mathoverflow.net/posts/42241/revision shttps://mathoverflow.net/posts/11437/revisions https://mathoverflow.net/posts/232351/revisions
Jan 31 at 22:14, by Martin Sleziak
This tag was mentioned a few times in this room: chat.stackexchange.com/search?q=errata&room=10243 chat.stackexchange.com/…
The tag (errata) was created back in 2016, but then removed from all four questions. It was created again in January 2020, since then it was used on three questions. — Martin Sleziak 17 secs ago

8 hours later…
1:03 PM
@MartinSleziak The tag now has two questions.
5

The standard simplices $\Delta^n \subset \{\mathbf{x}\in\mathbb{R}^{n+1}\mid x_0 + \ldots + x_n =1 \} =: \mathbb{A}^n$ carry two natural sorts of smooth differential forms: Those differential forms on the interior of $\Delta^n$ that extend smoothly to a neighbourhood of $\Delta^n$ in $\mathbb{... 3 I was reading An Introduction to Diffeology by Patrick Iglesias-Zemmour and he defines a diffeological covering space as a diffeological fiber bundle with discrete fiber. My question: Consider a manifold$M$and a discrete subgroup$G$of$\mathrm{Diff}(M)$acting on$M$freely. When is the q... @MartinSleziak The tag has grown to three questions. 10 There are many recent papers on classification of Harish-Chandra bimodules for rational Cherednik algebras and, more generally, non-commutative algebras which are quantizations of symplectic singularities (Losev). What is the meaning of Harish-Chandra bimodules in terms of representation theory o... 7 A. Okounkov said, "symplectic resolutions are Lie algebras of the 21st century." Is there a conjecture on the classification of symplectic resolutions? Do Braverman-Finkelberg-Nakajima Coulomb branches give most known examples of symplectic singularities (and do BFN Coulomb branches have explicit... 3 I was recently looking at the survey article of Fu on symplectic resolutions which has a number of open questions and conjectures at the end. (I think one of these was existence of a classification of when symplectic singularities admit symplectic resolutions, which is discussed on other MathOve... @MartinSleziak now has four questions. 3 Is there a website where i could read/download math reviews appeared in the above Journal? Of course, I guess all the reviews are available on ZBMATH https://zbmath.org/, which is not free for access. Besides, the reviews (before 1990s) on ZBMATH are uploaded as scanned files, not very clear and... 31 Recently I had a few papers published, and I suppose in response to this, I received a request from Zentralblatt to be a reviewer. They ask some general questions about what I would feel comfortable reviewing, and if I would be willing to receive papers electronically. My concern about just signi... 30 Among the papers indexed by MathSciNet and Zentralblatt MATH, I occasionally have seen papers which consist essentially only of text copied from elsewhere without proper attribution and without adding any significant value. I would be interested whether anyone has an idea what the frequency of su... 132 How could a free (i.e. free content) alternative for MathSciNet and Zentralblatt be created? Comments Some mathematicians have stopped writing reviews for MathSciNet because they feel their output should be freely available. (The Pricing for MathSciNet is not high, but it is not the point.... @MartinSleziak has grown to four questions as well. -1 A fairly wellknown heuristic for TSP that is based on matching is described in the 2003 paper Match twice and stitch: a new TSP tour construction heuristic by Andrew B. Kahng and Sherief Reda. Its basic idea is to generate a vertex-covering collection of even cycles via the union of two edge-disj... 0 A fundamental and undoubtedly much-studied problem is that of determining not only whether or not an optimization algorithm converges to its optimum but also how fast it converges (see a discussion on how to measure this here: https://mathoverflow.net/a/90920/47228). I am interested in whether or... 1 I'm curious to find an algorithm that solves the following graph-theory problem. Suppose I have a graph$G(V,E)$with two disjoint sets of vertices,$V_a$and$V_b$. My goal is to find paths from every vertex in$V_a$to every vertex in$V_b$where the edges in these paths are minimally overlap... 0 Suppose we have a weighted undirected graph$G(V,E)$. We are given the information that$V_a \cap V_b = \emptyset$and$V_a,V_b \subset V$. We want to find paths from all vertices in$V_a$to all vertices in$V_b\$ given the following conditions: Primary objective: paths minimize the number of ...