Tootfinder

Distributional Adversarial Attacks and Training in Deep Hedging
Guangyi He, Tobias Sutter, Lukas Gonon
https://arxiv.org/abs/2508.14757 https://arxiv.org/p…

Distributional Adversarial Attacks and Training in Deep Hedging
In this paper, we study the robustness of classical deep hedging strategies under distributional shifts by leveraging the concept of adversarial attacks. We first demonstrate that standard deep hedging models are highly vulnerable to small perturbations in the input distribution, resulting in significant performance degradation. Motivated by this, we propose an adversarial training framework tailored to increase the robustness of deep hedging strategies. Our approach extends pointwise adversari…

Multiplicative Hitchin fibrations and Langlands duality
Guillermo Gallego
https://arxiv.org/abs/2509.14364 https://arxiv.org/pdf/2509.14364

Multiplicative Hitchin fibrations and Langlands duality
We identify pairs of (twisted) multiplicative Hitchin fibrations which are "dual" in the sense that their bases are identified and their generic fibres are dual Beilinson $1$-motives. More precisely, we match the following: (1) an untwisted multiplicative Hitchin fibration associated with a simply-laced semisimple group $G$ with an untwisted multiplicative Hitchin fibration associated with the Langlands dual group $G^\vee$; (2) a twisted multiplicative Hitchin fibration associated with a simply…

#Satellitendaten des #DLR zeigen, dass in deutschen Großstädten durch dichte Bebauung und versiegelte Flächen messbare #Hitzeinseln entstehen.
Über zehn Jahre analysierten Forschende die O…

Satellitendaten: DLR weist hohe Hitzebelastung in deutschen Großstädten nach
Forscher haben die Oberflächentemperatur für über 70 Großstädte hierzulande in den Sommermonaten von über zehn Jahren ermittelt und Hitzeinseln identifiziert.

Demostart des heutigen Klimastreiks in Freiburg doch voller als gedacht. Davor (mit etwas Verspätung - und zu hundert oder so) mit dem Rad zur Demo.

Haben wir den lauten Polizeiheli, der die sonntägliche Ruhe stört, mal wieder dem heutigen Namospiel zu verdanken?

#Jellyfin for #Roku 3.0.8 will be published on Wednesday, Aug 20, 2025 5:00 PM PT
🎉 New Features
- Create episode view for TV library by 1hitsong
- Add support for VTT line property to custom subs by 1hitsong
- Add "Shuffle Play Collection" to collection's opti…

https://www.svt.se/nyheter/video/f07115f4f952ea3e-jakten-pa-friidrottens-aldsta-varldsrekord-finns-en-anledning-till-att-det-statt-sig

Jakten på friidrottens äldsta världsrekord: ”Finns en anledning till att det stått sig”
Jarmila Kratochvilovas världsrekord på 800 meter har stått sig sedan 1983. Men inför VM i Tokyo hotar brittiskan Keely Hodgkinson nu ”det omöjliga rekordet”.

To Zip Through the Cost Analysis of Probabilistic Programs
Matthias Hetzenberger, Georg Moser, Florian Zuleger
https://arxiv.org/abs/2508.14249 https://arx…

To Zip Through the Cost Analysis of Probabilistic Programs
Probabilistic programming and the formal analysis of probabilistic algorithms are active areas of research, driven by the widespread use of randomness to improve performance. While functional correctness has seen substantial progress, automated reasoning about expected runtime remains comparatively limited. In this work, we address this challenge by introducing a refinement-typed probability monad in Liquid Haskell. Our monad enables automated reasoning about expected values and costs by encodi…

Satellitendaten: DLR weist hohe Hitzebelastung in deutschen Großstädten nach
Forscher haben die Oberflächentemperatur für über 70 Großstädte hierzulande in den Sommermonaten von über zehn Jahren ermittelt und Hitzeinseln identifiziert.

From Hitchin Systems to Rational Elliptic Surfaces with C*-actions via Orbifold Hilbert Schemes
Yonghong Huang
https://arxiv.org/abs/2509.14812 https://arx…

From Hitchin Systems to Rational Elliptic Surfaces with C*-actions via Orbifold Hilbert Schemes
Using orbifold Hilbert schemes, we compactify all two-dimensional Hitchin systems corresponding to types A0-tilde, D4-tilde, E6-tilde, E7-tilde, and E8-tilde, thereby obtaining four rational elliptic surfaces with C*-actions. Their singular fibers and relative minimal models are listed in the main table. To this end, we prove that Hilbert schemes of orbifold surfaces are connected smooth projective schemes under suitable conditions, and we use the Hilbert-Chow morphism to construct the minimal …