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 -
20 765
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 $$\lVert(a_{ij})\rVert \le C \Bigl\lVert\s...
Mathoverflow.net news digest
-
0 days
On the irrationality of $\pi \zeta(3)$
It is known that
$$\int_0^{\pi/2} \theta^2 \ln(2 \sin(\theta))d\theta=-\frac{\pi}{4}\sum_{k=1}^{+\infty}\frac{(-1)^k}{k^3}$$
Also $\sum_{k=1}^{+\infty}\frac{(-1)^k}{k^3}=-\eta(3)=-\frac{3}{4}\zeta(3)$. Therefore -
0 days
Relationship between two cardinal invariants of non-separable von Neumann algebr...
Given a $C^\ast$-algebra $A$, let $\kappa(M)$ be$$\sup\{|B| : B~\text{is a m.a.s.a. of}~A\}$$(where a m.a.s.a. is a maximal abelian subalgebra).
For monotone complete $A$, let $\lambda(A)$ be the least cardinal such that for any norm-bounded directed family $F$ of self-adjoint elements of $M$, there is a subfamily $F_0 \subseteq F$ with $|F_0| \leq \lambda(M)$ such that $\sup F_0 = \sup F$.... -
10 years
Generating uniquely $k$-optimal point sets
This question is motivated by the observation that finding an optimal tour through a set of points in the Euclidean plane is especially simple, if the points are in convex configuration and, that the relative order of the points on the convex hull is...
-
0 days
Oscillatory integrals and stationary phase
Suppose $f:(0,1)\rightarrow \mathbb R$ has a stationary point at 1/2 and higher derivatives that blow up towards 1 (I can be more precise, but I think I need first a general idea).Suppose $\lambda >Y>0$ are both large with $Y$ a small fixed power...
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
