Tootfinder

I wished I could disagree with this post but sadly I cannot. I had high hopes for Matrix and still use it but boy is it not fixing the core and conceptual issues.
https://shkspr.mobi/blog/2025/07/im-never-going-back-to-matrix/

I'm never going back to Matrix
I should love Matrix. It is a decentralised, privacy preserving, multi-platform chat tool. Goodbye Slack and your ridiculous free limits. Adiós Discord and your weird gamification. Suck it IRC with your obscure syntax and faint stench of BO. WhatsApp and Telegram can stick their heads in a bucket of lukewarm sick and sing sea shanties! Let's join the future! The problem is - Matrix is shit. Not …

Ukraine picks '2,000 Meters to Andriivka' as its 2026 Oscars contender: https://benborges.xyz/2025/08/28/ukraine-picks-meters-to-andriivka.html

On the non-existence of perfect codes in the sum-rank metric
Giuseppe Del Prete, Antonio Roccolano, Ferdinando Zullo
https://arxiv.org/abs/2508.20940 https://

On the non-existence of perfect codes in the sum-rank metric
We study perfect codes in the sum-rank metric, a generalization of both the Hamming and rank metrics relevant in multishot network coding and space-time coding. A perfect code attains equality in the sphere-packing bound, corresponding to a partition of the ambient space into disjoint metric balls. While perfect codes in the Hamming and rank metrics are completely classified, the existence of nontrivial perfect codes in the sum-rank metric remains largely open. In this paper, we investigate lin…

Kabinet bereidt maatregelen voor tegen Israël vanwege situatie in Gaza - #nos
https://nos.nl/artikel/2576741
Vanavond dus kennelijk meer inhoudelijk nieuws. Maar zoals @…

Continuity Norm Framework for the Evolution of Nonsingular Matrices
L. Yildiz, D. Kayki, E. Gudekli
https://arxiv.org/abs/2507.20742 https://arxiv.org/pdf/…

Continuity Norm Framework for the Evolution of Nonsingular Matrices
Matrix theory, foundational in diverse fields such as mathematics, physics, and computational sciences, typically categorizes matrices based strictly on their invertibility-determined by a sharply defined singular or nonsingular classification. However, such binary classifications become inadequate in describing matrices whose elements vary continuously over time, thereby transitioning through intermediate states near singular configurations. To address this fundamental limitation, we develop a…

Forbidden Configurations and Boundary Cases
Richard P. Anstee, Oakley Edens, Arvin Sahami, Attila Sali
https://arxiv.org/abs/2507.19336 https://arxiv.org/p…

Forbidden Configurations and Boundary Cases
Let $F$ be a $k\times \ell$ (0,1)-matrix. Define a (0,1)-matrix $A$ to have a $F$ as a \emph{configuration} if there is a submatrix of $A$ which is a row and column permutation of $F$. In the language of sets, a configuration is a \emph{trace}. Define a matrix to be {\it simple} if it is a (0,1)-matrix with no repeated columns. Let $\mathrm{Avoid}(m,F)$ be all simple $m$-rowed matrices $A$ with no configuration $F$. Define $\mathrm{forb}(m,F)$ as the maximum number of columns of any matrix in $…

Higher order linear differential equations for unitary matrix integrals: applications and generalisations
Peter J. Forrester, Fei Wei
https://arxiv.org/abs/2508.20797 https://…

Higher order linear differential equations for unitary matrix integrals: applications and generalisations
We consider characterisations of the class of unitary matrix integrals $ \langle (\det U)^q e^{s^{1/2} {\rm Tr}(U + U^\dagger)} \rangle_{U(l)}$ in terms of a first order matrix linear differential equation for a vector function of size $l+1$, and in terms of a scalar linear differential equation of degree $l+1$. It will be shown that the latter follows from the former. The matrix linear differential equation provides an efficient way to compute the power series expansion of the matrix integrals…

Check out this piece I wrote for TechTarget on the ten metrics or KPIs that security leaders should track and show to the board.
Thanks to Dave Lindner of Contrast Security, Steve Cobb of SecurityScorecard and Bob Maley of Black Kite for their insight.
https://www.

10 key cybersecurity metrics and KPIs your board wants tracked | TechTarget
Learn about the cybersecurity metrics and KPIs that IT security managers should track to monitor security efforts and keep the board of directors informed.

Improving SpGEMM Performance Through Matrix Reordering and Cluster-wise Computation
Abdullah Al Raqibul Islam, Helen Xu, Dong Dai, Ayd{\i}n Bulu\c{c}
https://arxiv.org/abs/2507.21253

Improving SpGEMM Performance Through Matrix Reordering and Cluster-wise Computation
Sparse matrix-sparse matrix multiplication (SpGEMM) is a key kernel in many scientific applications and graph workloads. Unfortunately, SpGEMM is bottlenecked by data movement due to its irregular memory access patterns. Significant work has been devoted to developing row reordering schemes towards improving locality in sparse operations, but prior studies mostly focus on the case of sparse-matrix vector multiplication (SpMV). In this paper, we address these issues with hierarchical clusterin…

Non-affine Families of 8 x 8 Complex Hadamard Matrices
Tuomo Valtonen
https://arxiv.org/abs/2505.22947 https://arxiv.org/pdf/2505.229…

Non-affine Families of 8 x 8 Complex Hadamard Matrices
Six non-affine 3-parameter families of complex Hadamard matrices of order 8 are presented. These families contain Hadamard matrices that are not equivalent to any previously known Hadamard matrices in the literature. Each family arises from unimodular points of an affine variety defined by palindromic polynomials. The families are given as an image of a function that solves the corresponding system of polynomials on a domain that guarantees unimodularity of the solutions