Tootfinder

"New File Format Research and Documentation on the Sustainability of Digital Formats" | The Signal https://blogs.loc.gov/thesignal/2025/06/new-file-format-research/

This is going to be a different type of campaign.
Because when you’re going after Medicaid and even ripping food away from hungry kids,
all to cut taxes for donors and corporate lobbyists,
we’re not pulling punches.
I hope you’ll join us:
https://secure.actblue.com/donate/loc_…

Elect Annie Andrews
Donate to send Annie to the Senate!

@… hop in losers we’re getting paid per LoC!!!

Recovery of initial displacement and velocity in anisotropic elastic systems by the time dimensional reduction method
Trong D. Dang, Chanh V. Le, Khoa D. Luu, Loc H Nguyen
https://arxiv.org/abs/2506.13000

Recovery of initial displacement and velocity in anisotropic elastic systems by the time dimensional reduction method
We introduce a time-dimensional reduction method for the inverse source problem in linear elasticity, where the goal is to reconstruct the initial displacement and velocity fields from partial boundary measurements of elastic wave propagation. The key idea is to employ a novel spectral representation in time, using an orthonormal basis composed of Legendre polynomials weighted by exponential functions. This Legendre polynomial-exponential basis enables a stable and accurate decomposition in the…

Universal roughness and the dynamics of urban expansion
Ulysse Marquis, Oriol Artime, Riccardo Gallotti, Marc Barthelemy
https://arxiv.org/abs/2506.10656 h…

Universal roughness and the dynamics of urban expansion
We present a new approach to quantity urban sprawl using tools from surface growth physics. Analyzing built-up area expansion in 19 cities (1985-2015), we uncover anisotropic growth with branch-like extensions and a piecewise linear relation between area and population. A universal local roughness exponent $α_{\text{loc}} \approx 0.54$ coexists with variable exponents $β$, $z$. As modeling urban sprawl remains an open problem, these results offer a necessary empirical basis for theory.

🇺🇦 Auf radioeins läuft...
Bloc Party:
🎵 The Prayer
#NowPlaying #BlocParty
https://montie455.bandcamp.com/track/bloc-party-the-prayer-montie455-rmx
https://open.spotify.com/track/2LTPhPMgJEtkOp25KqBQJG

Combining social relations and interaction data in Recommender System with Graph Convolution Collaborative Filtering
Tin T. Tran, Vaclav Snasel, Loc Tan Nguyen
https://arxiv.org/abs/2506.02834

Combining social relations and interaction data in Recommender System with Graph Convolution Collaborative Filtering
A recommender system is an important subject in the field of data mining, where the item rating information from users is exploited and processed to make suitable recommendations with all other users. The recommender system creates convenience for e-commerce users and stimulates the consumption of items that are suitable for users. In addition to e-commerce, a recommender system is also used to provide recommendations on books to read, movies to watch, courses to take or websites to visit. Simi…

This https://arxiv.org/abs/2501.11106 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

$L^{1}_{loc}$-convergence of Jacobians of Sobolev homeomorphisms via area formula
We prove that given a sequence of homeomorphisms $f_k: Ω\to \mathbb{R}^n$ convergent in $W^{1,p}(Ω, \mathbb{R}^n)$, $p \geq 1$ for $n =2$ and $p > n-1$ for $n \geq 3$, to a homeomorphism $f$ which maps sets of measure zero onto sets of measure zero, Jacobians $Jf_k$ converge to $Jf$ in $L^1_{loc}(Ω)$. We prove it via Federer's area formula and investigation of when $|f_k(E)| \to |f(E)|$ as $k \to \infty$ for Borel subsets $E \Subset Ω$.

A generalization of the ADM mass for asymptotically Euclidean manifolds of weak regularity
Stig Lundgren, Benjamin Meco
https://arxiv.org/abs/2506.02670 ht…

A generalization of the ADM mass for asymptotically Euclidean manifolds of weak regularity
We propose a new definition of the ADM mass for asymptotically Euclidean manifolds inspired by the definition of mass for weakly regular asymptotically hyperbolic manifolds by Gicquaud and Sakovich. This version of the mass allows one to work with metrics of local Sobolev regularity $ W^{1,2}_\text{loc} \cap L^\infty $ and we show, under suitable asymptotic assumptions, that the mass is finite, invariant under a change of coordinates at infinity and that it agrees with the classical ADM mass in…