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
  • English language flagLanguage: English
  • Last check:
  • 15 260

    Visitors daily
  • 54 936

    Pageviews daily
  • 6

    Google PR
  • 21 793

    Alexa rank

Mathoverflow.net news digest

  • 0 days

    Bounds on the Summatory Mobius Function on Arithmetic Progressions

    I hope this is a suitable MO question. I am interested in knowing if there are any bounds on the error of the sum of the Mobius function $\mu$ over short arithmetic progressions. Let,
    \begin{equation}f(A,B) = \sum\limits_{k=A}^{B}\mu(k)\end{equation}\begin{equation}f_e(A,B) = |f(A,B) - (B-A)|\end{equation}...

  • 0 days

    Can $E + E$ and $E \cdot E$ have simultaneously small Hausdorff dimension?

    Let $E$ be a subset of $\mathbb R$ with Hausdorff dimension $0 < \dim_H (E) < 1$.
    We write $E + E$, $E \cdot E$ for the sets of sums and products of elements of $E$ respectively.
    Question: Is it possible that

  • 0 days

    Example of a no-4-coplanar set in projective space over a finite field

    Let $\mathbb{F}_q$ be a finite field. Consider the finite field $\mathbb{F}_{q^3}$ as a $3$-dimensional vector space over $\mathbb{F}_q$. Let V be the $8$-dimensional $\mathbb{F}_q$-vector space given by $V=\{(x,y,z,t)\mid x,t\in \mathbb{F}_q, y,z\in...

  • 0 days

    unprovablity of riemann hypothesis [closed]

    Introducing nonstandard analysis and the infinitesimals it allows, we consider the axiomatic extension of nonstandard analysis as a Nelsonian IST.
    If the zero point of ζ(s) is infinitesimal at ε_0,
    It is conceivable that re(s) = 1/2 + ε_0.

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

Excellent

Child safety

Excellent