Tootfinder

50 mothers’ days ago this afternoon, the #GratefulDead begin their spring touring in #reno. the 1st outdoor gig for the wall of sound, battling the washoe zephyr winds, now on “from the mars hotel 50.” phil lesh debuts his new beard. soundboard:

Not to argue with the dude, but he’s massively overthought the problem. In the real world, letting anyone from anywhere to log in via SSH if they have a correct username password or crypto key isn’t a common operational need. By default, packets to port 22 should be ignored or externally excluded.
The universe of legitimate users’ client IPs for most SSH-able hosts is minuscule in network terms. Worst case scenario: allow-list by ASN. Or /8.

Rob Ricci (@ricci@discuss.systems)
Attached: 1 image Hey! Let's talk about #SSH and #security! If you've ever looked at SSH server logs you know what I'm about to say: Any SSH server connected to the public Internet is getting bombarded by constant attempts to log in. Not just a few of them. A *lot* of them. Sometimes even dozens per second. And this problem is not going away; it is, in fact, getting worse. And attackers' behavior is changing. The graph attached to this post shows the number of attempted SSH logins per day to…

H\"older invariance of the Henry-Parusinski invariant
Alexandre Fernandes, Jos\'e Edson Sampaio, Joserlan Perote da Silva
https://arxiv.org/abs/2402.08301

Hölder invariance of the Henry-Parusinski invariant
In this article, we show the Hölder invariance of the Henry-Parusinski invariant. For a single germ $ f$, the Henry-Parusinski invariant of $ f $ is given in terms of the leading coefficients of the asymptotic expansion of $ f $ along the branches of the generic polar curve of $f$. As a consequence, we obtain that the classification problem of polynomial function-germs, with uniformly bounded degree, under Hölder equivalence, admits continuous moduli.

Improved Randomized Approximation of Hard Universality and Emptiness Problems
Pantelis Andreou, Stavros Konstantinidis, Taylor J. Smith
https://arxiv.org/abs/2403.08707

Improved Randomized Approximation of Hard Universality and Emptiness Problems
We build on recent research on polynomial randomized approximation (PRAX) algorithms for the hard problems of NFA universality and NFA equivalence. Loosely speaking, PRAX algorithms use sampling of infinite domains within any desired accuracy $δ$. In the spirit of experimental mathematics, we extend the concept of PRAX algorithms to be applicable to the emptiness and universality problems in any domain whose instances admit a tractable distribution as defined in this paper. A technical result …

A profile of Donna Langley, NBCUniversal's chief content officer and studios chairwoman, who has led Universal to creative dominance and commercial supremacy (Brooks Barnes/New York Times)
https://www.nytimes.com/2024/03/11/movies/donna-langl…

Donna Langley, Universal Chair, Bet Big on ’Oppenheimer’
Under Donna Langley’s leadership, Universal has managed the rare feat of achieving creative dominance and commercial supremacy at the same time.

Suppose They Gave A #WarOnWoke And No One Came?
What If Prevalence Of #CriticalRaceTheory Was Just A Theory?
New #Syllabus Study Of 5.6m US

This https://arxiv.org/abs/2402.06260 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Vertex-minor universal graphs for generating entangled quantum subsystems
We study the notion of $k$-stabilizer universal quantum state, that is, an $n$-qubit quantum state, such that it is possible to induce any stabilizer state on any $k$ qubits, by using only local operations and classical communications. These states generalize the notion of $k$-pairable states introduced by Bravyi et al., and can be studied from a combinatorial perspective using graph states and $k$-vertex-minor universal graphs. First, we demonstrate the existence of $k$-stabilizer universal gr…

50 mothers’ days ago this afternoon, the #GratefulDead begin their spring touring in #reno. the 1st outdoor gig for the wall of sound, battling the washoe zephyr winds, now on “from the mars hotel 50.” phil lesh debuts his new beard. soundboard:

Strong Lensing by Galaxy Clusters
Priyamvada NatarajanDepartment of Astronomy, Yale, Department of Physics, Yale, Yale Center for Astronomy \& Astrophysics, Liliya L. WilliamsMinnesota Institute for Astrophysics, University of Minnesota, Marusa BradacUniversity of California, Davis, University of Ljubljana, Claudio GrilloUniversity of Milan, Agniva GhoshMinnesota Institute for Astrophysics, University of Minnesota, Keren SharonUniversity of Michigan, Jenny WagnerBahamas Advanced St…

Strong Lensing by Galaxy Clusters
Galaxy clusters as gravitational lenses play a unique role in astrophysics and cosmology: they permit mapping the dark matter distribution on a range of scales; they reveal the properties of high and intermediate redshift background galaxies that would otherwise be unreachable with telescopes; they constrain the particle nature of dark matter and are a powerful probe of global cosmological parameters, like the Hubble constant. In this review we summarize the current status of cluster lensing ob…

Harder's denominator problem for $\mathrm{SL}_2(\mathbb{Z})$ and its applications
Hohto Bekki, Ryotaro Sakamoto
https://arxiv.org/abs/2403.05800 https:…

Harder's denominator problem for $\mathrm{SL}_2(\mathbb{Z})$ and its applications
The aim of this paper is to give a full detail of the proof given by Harder of a theorem on the denominator of the Eisenstein class for $\mathrm{SL}_2(\mathbb{Z})$ and to show that the theorem has some interesting applications including the proof of a recent conjecture by Duke on the integrality of the higher Rademacher symbols. We also present a sharp universal upper bound for the denominators of the values of partial zeta functions associated with narrow ideal classes of real quadratic fields…