Tootfinder

Urban Composition II 🫟
都市构图 II 🫟
📷 Nikon FE
🎞️Ilford FP4 Plus, expired 1995
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#filmphotography

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Inside job
When an account gets hacked, social media giant Meta offers little support, spawning a shadowy network of brokers and Meta employees who profit from helping users get back online
https://www.theglobeandmail.com/canada/art

Precision predictions of Starobinsky inflation with self-consistent Weyl-squared corrections
Eugenio Bianchi, Mauricio Gamonal
https://arxiv.org/abs/2506.10081

Precision predictions of Starobinsky inflation with self-consistent Weyl-squared corrections
Starobinsky's $R+αR^2$ inflation provides a compelling one-parameter inflationary model that is supported by current cosmological observations. However, at the same order in spacetime derivatives as the $R^2$ term, an effective theory of spacetime geometry must also include the Weyl-squared curvature invariant $W^2$. In this paper, we study the inflationary predictions of the gravitational theory with action of the form $R+αR^2 - βW^2$, where the coupling constant $α$ sets the scale of infl…

Break-up of an active chiral fluid
Luke Neville, Jens Eggers, Tanniemola B. Liverpool
https://arxiv.org/abs/2506.10534 https://arxiv.…

Break-up of an active chiral fluid
We consider the non-linear dynamics governing the break-up of a two-dimensional strip of active chiral fluid. We observe that the strip thickness goes to zero at the pinch off points as a power law in finite time. Using slender body theory combined with a scaling analysis, we identify a new class of scaling exponents and scaling functions characterizing the speed and shape of break-up in these systems. The scaling analysis is in excellent agreement with direct numerical simulations of the hydro…

SDP bounds on the stability number via ADMM and intermediate levels of the Lasserre hierarchy
Lennart Sinjorgo, Renata Sotirov, Juan C. Vera
https://arxiv.org/abs/2506.08648

SDP bounds on the stability number via ADMM and intermediate levels of the Lasserre hierarchy
We consider the Lasserre hierarchy for computing bounds on the stability number of graphs. The semidefinite programs (SDPs) arising from this hierarchy involve large matrix variables and many linear constraints, which makes them difficult to solve using interior-point methods. We propose solving these SDPs using the alternating direction method of multipliers (ADMM). When the second level of the Lasserre hierarchy for a given graph is intractable for the ADMM, we consider an intermediate-level …

Nonlinear Stochastic Filtering with Volterra Gaussian noises
Thomas Cass, Dan Crisan, Andrea Iannucci
https://arxiv.org/abs/2506.09637 https://

Nonlinear Stochastic Filtering with Volterra Gaussian noises
We consider a nonlinear filtering problem for a signal-observation system driven by a Volterra-type Gaussian rough path, whose sample paths may exhibit greater roughness than those of Brownian motion. The observation process includes a Volterra-type drift, introducing both memory effects and low regularity in the dynamics. We prove well-posedness of the associated rough differential equations and the Kallianpur-Striebel. We then establish robustenss properties of the filter and study the existe…

LLMs are starving for knowledge graphs. Raphael Troncy was pointing out that many LLM company crawlers are constantly visiting their KGs. Some crawlers even perform explicit SPARQL queries on the KGs.
#knowledgegraphs #eswc2025

Smile asymptotic for Bachelier Implied Volatility
Roberto Baviera, Michele Domenico Massaria
https://arxiv.org/abs/2506.08067 https://

Smile asymptotic for Bachelier Implied Volatility
We investigate the asymptotic behaviour of the Implied Volatility in the Bachelier setting, extending the framework introduced by Benaim and Friz for the Black-Scholes setting. Exploiting the theory of regular variation, we derive explicit expressions for the Bachelier Implied Volatility in the wings of the smile, linking these to the tail behaviour of the underlying's returns' distribution. Furthermore, we establish a direct connection between the analyticity strip of the returns' characterist…

Langsam habe ich den Eindruck, die babylonische Sprachverwirrung war vielleicht keine Strafe Gottes, sondern vor allem eine Schutzmaßnahme für die Weltbevölkerung …
#EverythingEverywhereAllAtOnce #Viral

Traveling supersolid stripe patterns in spin-orbit-coupled Bose-Einstein condensates
G. I. Martone, G. V. Shlyapnikov
https://arxiv.org/abs/2506.07322 http…

Traveling supersolid stripe patterns in spin-orbit-coupled Bose-Einstein condensates
We consider a traveling supersolid stripe pattern in a spin-orbit-coupled Bose gas. This configuration is associated with an unequal occupation of the two single-particle energy minima, giving rise to a chemical potential difference that sets the fringe velocity. Unlike stationary stripes, the moving pattern is spin-polarized, with decreasing contrast as momentum increases, eventually leading to stripe melting and transition to the uniform plane-wave phase. The Bogoliubov spectrum of the moving…