Tootfinder

Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. VI: Confirmation of a Long-Period Giant Planet Discovered with a Single TESS Transit
Zahra Essack, Diana Dragomir, Paul A. Dalba, Matthew P. Battley, David R. Ciardi, Karen A. Collins, Steve B. Howell, Matias I. Jones, Stephen R. Kane, Eric E. Mamajek, Christopher R. Mann, Ismael Mireles, Dominic Oddo, Lauren A. Sgro, Keivan G. Stassun, Solene Ulmer-Moll, Cristilyn N. Watkins, Samuel W. Yee, Carl Ziegler, Allyson Bieryla, Ioan…

Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. VI: Confirmation of a Long-Period Giant Planet Discovered with a Single TESS Transit
We report the discovery and confirmation of TOI-4465 b, a $1.25^{+0.08}_{-0.07}~R_{J}$, $5.89\pm0.26~M_{J}$ giant planet orbiting a G dwarf star at $d\simeq$ 122 pc. The planet was detected as a single-transit event in data from Sector 40 of the Transiting Exoplanet Survey Satellite (TESS) mission. Radial velocity (RV) observations of TOI-4465 showed a planetary signal with an orbital period of $\sim$102 days, and an orbital eccentricity of $e=0.24\pm0.01$. TESS re-observed TOI-4465 in Sector 5…

Reasoning about Bounded Reasoning
Shuige Liu, Gabriel Ziegler
https://arxiv.org/abs/2506.19737 https://arxiv.org/pdf/2506.19737

Reasoning about Bounded Reasoning
Interactive decision-making relies on strategic reasoning. Two prominent frameworks are (1) models of bounded reasoning, exemplified by level-$k$ models, which keep reasoning implicit, and (2) epistemic game theory, which makes reasoning explicit. We connect these approaches by "lifting" static complete-information games into incomplete-information settings where payoff types reflect players' reasoning depths as in level-$k$ models. We introduce downward rationalizability, defined via minimal b…

Single-event neutron time-of-flight spectroscopy with a petawatt-laser-driven neutron source
M. A. Mill\'an-Callado, S. Scheuren, A. Alejo, J. Benlliure, R. Beyer, T. E. Cowan, B. Fern\'andez, E. Griesmayer, A. R. Junghans, J. Kohl, F. Kroll, J. Metzkes-Ng, I. Prencipe, J. M. Quesada, M. Rehwald, C. R\"odel, T. Rodr\'iguez-Gonz\'alez, U. Schramm, M. Roth, R. Stefanikova, S. Urlass, C. Weiss, K. Zeil, T. Ziegler, C. Guerrero

Single-event neutron time-of-flight spectroscopy with a petawatt-laser-driven neutron source
Fast neutron-induced nuclear reactions are crucial for advancing our understanding of fundamental nuclear processes, stellar nucleosynthesis, and applications, including reactor safety, medical isotope production, and materials research. With many research reactors being phased out, compact accelerator-based neutron sources are becoming increasingly important. Laser-driven neutron sources (LDNSs) offer unique advantages -- ultrashort neutron pulsees for superior energy resolution, high per-puls…

Understanding Online Polarization Through Human-Agent Interaction in a Synthetic LLM-Based Social Network
Tim Donkers, J\"urgen Ziegler
https://arxiv.org/abs/2506.15866

Understanding Online Polarization Through Human-Agent Interaction in a Synthetic LLM-Based Social Network
The rise of social media has fundamentally transformed how people engage in public discourse and form opinions. While these platforms offer unprecedented opportunities for democratic engagement, they have been implicated in increasing social polarization and the formation of ideological echo chambers. Previous research has primarily relied on observational studies of social media data or theoretical modeling approaches, leaving a significant gap in our understanding of how individuals respond t…

Classification of exact structures using the Ziegler spectrum
Julia Sauter
https://arxiv.org/abs/2506.02304 https://arxiv.org/pdf/250…

Classification of exact structures using the Ziegler spectrum
Given an idempotent complete additive category, we show the there is an explicitly constructed topological space such that the lattice of exact substructures is anti-isomorphic to the lattice of closed subsets. In the special case that the additive category has weak cokernels, this topological space is an open subset of the Ziegler spectrum and this is a result of Kevin Schlegel. We also look at some module categories of rings where the Ziegler spectrum is known and calculate the global dimensi…

Capturing Misalignment
Pierfrancesco Guarino, Gabriel Ziegler
https://arxiv.org/abs/2506.17176 https://arxiv.org/pdf/2506.17176

Capturing Misalignment
We introduce and formalize misalignment, a phenomenon of interactive environments perceived from an analyst's perspective where an agent holds beliefs about another agent's beliefs that do not correspond to the actual beliefs of the latter. We demonstrate that standard frameworks, such as type structures, fail to capture misalignment, necessitating new tools to analyze this phenomenon. To this end, we characterize misalignment through non-belief-closed state spaces and introduce agent-dependent…

Trade Pitch Has Raiders $25 Million Defender Reunite With Dave Ziegler https://heavy.com/sports/nfl/las-vegas-raiders/tyree-wilson-titans-trade-rumors/?adt_ei=[email]

Second-Order Parameterizations for the Complexity Theory of Integrable Functions
Aras Bacho, Martin Ziegler
https://arxiv.org/abs/2506.11210 https://

Second-Order Parameterizations for the Complexity Theory of Integrable Functions
We develop a unified second-order parameterized complexity theory for spaces of integrable functions. This generalizes the well-established case of second-order parameterized complexity theory for spaces of continuous functions. Specifically we prove the mutual linear equivalence of three natural parameterizations of the space $\Lrm{p}$ of $p$-integrable complex functions on the real unit interval: (binary) $\Lrm{p}$-modulus, rate of convergence of Fourier series, and rate of approximation by s…

The Chow Ring of the 2-Sylow Subgroup of $\mathrm{GL}(4,2)$
Alexander Ziegler
https://arxiv.org/abs/2506.06512 https://arxiv.org/pdf/…

The Chow Ring of the 2-Sylow Subgroup of $\mathrm{GL}(4,2)$
This paper provides a computation of the mod 2 Chow ring of the motivic étale classifying space of the finite group $\mathrm{Syl}_2(\mathrm{GL}(4,2))$. It outlines a general computation strategy, adapted from work by Burt Totaro, that has been largely automated by the author. This strategy can be used to compute more examples of Chow rings of motivic étale classifying spaces quickly.

What Pareto-Efficiency Adjustments Cannot Fix
Josue Ortega, Gabriel Ziegler, R. Pablo Arribillaga, Geng Zhao
https://arxiv.org/abs/2506.11660 https://

What Pareto-Efficiency Adjustments Cannot Fix
The Deferred Acceptance (DA) algorithm is stable and strategy-proof, but can produce outcomes that are Pareto-inefficient for students, and thus several alternative mechanisms have been proposed to correct this inefficiency. However, we show that these mechanisms cannot correct DA's rank-inefficiency and inequality, because these shortcomings can arise even in cases where DA is Pareto-efficient. We also examine students' segregation in settings with advantaged and marginalized students. We pr…