MathOverflow
Math Overflow. Q&A for professional mathematicians.
Read Mathoverflow.net news digest here: view the latest Math Overflow articles and content updates right away or get to their most visited pages. Mathoverflow.net belongs to a group of fairly successful websites, with more than 458K visitors from all over the world monthly. It seems that Math Overflow content is notably popular in USA, as 32.4% of all users (148K visits per month) come from this country. We haven’t detected security issues or inappropriate content on Mathoverflow.net and thus you can safely use it. Mathoverflow.net is hosted with Stack Exchange, Inc. (United States) and its basic language is English.
Content verdict: Safe
Website availability: Live
Language: English
Last check:
-
15 260
Visitors daily -
54 936
Pageviews daily -
6
Google PR -
21 276
Alexa rank
Best pages on Mathoverflow.net
-
Q&A for professional mathematicians
-
Hottest Questions Today - MathOverflow
Skip to main content Stack Exchange Network Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, ...
-
Let $A$ be a $C^*$-algebra and $(a_{ij}) \in M_n(A)$ be a positive matrix. Does there exist a constant $C \ge 0$ (not depending on the $a_{ij}$) such that $$\lVert(a_{ij})\rVert \le C \Bigl\lVert\s...
Mathoverflow.net news digest
-
0 days
Isomorphic expansions-by-functions of $(\mathbb{R};<)$ (H. Friedman problem 28)
The following is motivated by problem number 28 in H. Friedman's 1975 problem list:
For which $S\subseteq\mathbb{N}\cup\{\infty\}$ is there a continuous $f:\mathbb{R}\rightarrow\mathbb{R}$ such that
if $n\in S$ then there is a $g\in C^n\setminus C^{n+1}$ with $(\mathbb{R};<,f)\cong(\mathbb{R};<,g)$, but... -
6 days
Isotopy to achieve finite intersections
I've asked this question on math.stackexchange a week ago, with no response. More context is available there.
Suppose that $\alpha$ and $\beta$ are closed curves on the $2$-manifold, say $F$ (possibly with boundary), each of which does not disconnect $F$. I want to ensure that the following is true... -
6 days
symplectic resolution of K theoretic coulomb branch
Consider the type $A_n$ quiver with gauge group $G=\prod_i \mathrm{GL(V_i)}$ and representation $N=\oplus_i \mathrm{Hom(N_i, N_{i+1})}$, will the K-theoretic Coulomb branch $Spec(\mathrm{K}^{ G(\mathcal{O})}(\mathcal{R}_{G, N}))$ admits a symplectic...
-
0 days
Smooth unknotting of noncompact manifolds in high codimension?
Question: Does there exist $\alpha \colon \mathbb{N} \to \mathbb{N}$ such that the following holds?
If $N$ is a connected smooth $n$-manifold (not necessarily compact), then every two proper smooth embeddings of $N$ in $\mathbb{R}^{\alpha(n)}$ are smoothly ambient isotopic....
Domain history
| Web host: | Stack Exchange, Inc. |
| Registrar: | GoDaddy.com, LLC |
| Registrant: | Registration Private (Domains By Proxy, LLC) |
| Updated: | July 07, 2025 |
| Expires: | July 14, 2026 |
| Created: | July 14, 2009 |
Whois record
Visitor gender
Male
Female
Safety scores
Trustworthiness
ExcellentChild safety
Excellent
