Tootfinder

Worst-case convergence analysis of relatively inexact gradient descent on smooth convex functions
Pierre Vernimmen, Fran\c{c}ois Glineur
https://arxiv.org/abs/2506.17145

Worst-case convergence analysis of relatively inexact gradient descent on smooth convex functions
We consider the classical gradient descent algorithm with constant stepsizes, where some error is introduced in the computation of each gradient. More specifically, we assume some relative bound on the inexactness, in the sense that the norm of the difference between the true gradient and its approximate value is bounded by a certain fraction of the gradient norm. This paper presents a worst-case convergence analysis of this so-called relatively inexact gradient descent on smooth convex functio…

Radiochromic Film Dosimetry for VHEE and UHDR: Considerations for the CLEAR Facility and Comparisons with Alanine, RPL and Dosimetry Phantoms
V. F. Rieker, J. J. Bateman, L. M. Wroe, M. Caloz, V. Grilj, Y. Q. Aguiar, A. Sch\"uller, C. Bailat, W. Farabolini, A. Gilardi, C. Robertson, P. Korysko, A. Malyzhenkov, S. Stapnes, M. -C. Vozenin, M. Dosanjh, R. Corsini

Radiochromic Film Dosimetry for VHEE and UHDR: Considerations for the CLEAR Facility and Comparisons with Alanine, RPL and Dosimetry Phantoms
Radiochromic films (RCFs) offer valuable two-dimensional dosimetry capabilities with a conceptually simple operating principle that requires minimal investment, making them particularly suitable for very high energy electron (VHEE) FLASH dosimetry where dosimetry standards are currently lacking. However, achieving high-accuracy measurements with RCFs presents significant practical challenges. Without the standardised protocols that ensure reliable outcomes across applications and facilities, kn…

Multi-partonic interactions, iterated discontinuities and the virtuality expansion in deep inelastic scattering
Zeno Capatti, Lucien Huber, Michael Ruf
https://arxiv.org/abs/2506.16489

Multi-partonic interactions, iterated discontinuities and the virtuality expansion in deep inelastic scattering
We introduce a perturbative model that accounts for the contribution of multi-partonic interactions to collider observables. A key feature of this multi-parton model is that cross sections are organised in terms of building blocks that are separately infrared-finite in virtue of the KLN theorem. We find compact expressions for these building blocks in terms of double discontinuities of Feynman-type integrals obtained by endowing a vacuum graph with additional topological information. The framew…

🇺🇦 Auf radioeins läuft...
Republica:
🎵 Ready To Go
#NowPlaying #Republica
https://djmoderno.bandcamp.com/track/republica-ready-to-go-vs-soulwax-accidents-compliments-dj-moderno-mashup
https://open.spotify.com/track/7Duqn8un04Nz5n4PWk83Q5

wanderer is a decentralized, self-hosted trail database.
You can upload your recorded GPS tracks or create new ones
and add various metadata to build an easily searchable catalogue.
https://wanderer.to/

@… SGML descended from GML, which descended from SCRIBE, which descended from ROFF. As described in “A Generalized Approach to Document Markup,” (1981) https://doi.org/10.1145/800209.806456

@… SGML descended from GML, which descended from SCRIPT, which descended from RUNOFF. As described in “A Generalized Approach to Document Markup,” (1981) https://doi.org/10.1145/800209.806456

Infinite horizon discounted LQ optimal control problems for mean-field switching diffusions
Kai Ding, Xun Li, Siyu Lv, Zuo Quan Xu
https://arxiv.org/abs/2506.16033

Infinite horizon discounted LQ optimal control problems for mean-field switching diffusions
This paper investigates an infinite horizon discounted linear-quadratic (LQ) optimal control problem for stochastic differential equations (SDEs) incorporating regime switching and mean-field interactions. The regime switching is modeled by a finite-state Markov chain acting as common noise, while the mean-field interactions are characterized by the conditional expectation of the state process given the history of the Markov chain. To address system stability in the infinite horizon setting, a …

If a sitting president can direct the IRS to investigate political enemies, revoke nonprofit status from dissenting institutions, or selectively enforce tax law to reward loyalty,
the agency no longer serves the public.
It serves power.
The slow hollowing of the IRS through funding cuts, staff attrition, and the erosion of norms yields the same result:
a weakened institution unable to enforce the law, uphold equity, or hold the powerful to account.
And when th…

The Fiscal State Under Siege: Why People Hate the IRS, and Why You Should Care
How Trump, DOGE, and Project 2025 Are Turning the IRS Into a Tool of Authoritarian Rule Editor’s Introduction: Hello readers, it's Nathan Tankus and I am very happy to bring to you the first in a long multi-part series on the IRS spearheaded by Anisha Steephen. Anisha worked for

Perversely, this most unconventional of presidents
who ruined the party brand
reverted to "Republican Original",
taking the kind of action that would meet approval from George W Bush, Dick Cheney, Donald Rumsfeld, John Bolton and John McCain.
The America First wing, meanwhile, was mostly muted and subdued:
Trump’s cult of personality typically trumps differences over policy
– and that is not likely to change over a military operation that took plac…