Tootfinder

40 years ago tonight, the #GratefulDead begin their summer, opening 3 anniversary gigs in #berkeley under a “20 years so far...” banner. action packed & fun all around.
soundboard:

Antisemitische Ausfälle der X-KI Grok: Polen fordert Untersuchung durch Brüssel
Nach einem Update vom Wochenende hat der KI-Account Grok auf X unter anderem Antisemitismus verbreitet. Polens Regierung wendet sich nun an Brüssel.

"MechaHitler a montré, peut-être plus que tout autre événement, que nous devrions vouloir savoir comment les IA voient le monde avant qu'elles ne soient déployées Š grande échelle de manière Š changer nos vies."
#IA #Grok

Interpretable representation learning of quantum data enabled by probabilistic variational autoencoders
Paulin de Schoulepnikoff, Gorka Mu\~noz-Gil, Hendrik Poulsen Nautrup, Hans J. Briegel
https://arxiv.org/abs/2506.11982

Interpretable representation learning of quantum data enabled by probabilistic variational autoencoders
Interpretable machine learning is rapidly becoming a crucial tool for scientific discovery. Among existing approaches, variational autoencoders (VAEs) have shown promise in extracting the hidden physical features of some input data, with no supervision nor prior knowledge of the system at study. Yet, the ability of VAEs to create meaningful, interpretable representations relies on their accurate approximation of the underlying probability distribution of their input. When dealing with quantum d…

HP2C-DT: High-Precision High-Performance Computer-enabled Digital Twin
E. Iraola (Barcelona Supercomputing Center), M. Garc\'ia-Lorenzo (Barcelona Supercomputing Center), F. Lordan-Gomis (Barcelona Supercomputing Center), F. Rossi (CITCEA, Universitat Polit\`ecnica de Catalunya), E. Prieto-Araujo (CITCEA, Universitat Polit\`ecnica de Catalunya), R. M. Badia (Barcelona Supercomputing Center)

HP2C-DT: High-Precision High-Performance Computer-enabled Digital Twin
Digital twins are transforming the way we monitor, analyze, and control physical systems, but designing architectures that balance real-time responsiveness with heavy computational demands remains a challenge. Cloud-based solutions often struggle with latency and resource constraints, while edge-based approaches lack the processing power for complex simulations and data-driven optimizations. To address this problem, we propose the High-Precision High-Performance Computer-enabled Digital Twin …

Gravitational wave propagation in bigravity in the late universe
David Brizuela, Marco de Cesare, Araceli Soler Oficial
https://arxiv.org/abs/2507.11526 ht…

Gravitational wave propagation in bigravity in the late universe
We carry out a detailed analytical investigation of the propagation of gravitational waves in bimetric gravity in a late-time de Sitter epoch. In this regime, the dynamical equations for the massless and massive graviton modes can be decoupled and solved exactly. We provide uniform approximations for the modes in terms of elementary functions, which are valid on all scales and for all viable mass windows. We identify different dynamical regimes for the system, depending on the propagation prope…

Eucalyptus boom in Brazil’s Cerrado dries up springs, forces out smallholders https://news.mongabay.com/short-article/2025/06/eucalyptus-boom-in-brazils-cerrado-dries-up-springs-forces-out-smallholders/

Eucalyptus boom in Brazil’s Cerrado dries up springs, forces out smallholders
A eucalyptus boom in Brazil’s biodiverse Cerrado savanna is drying up land and water springs, making subsistence farming more difficult, local authorities and farmers tell Mongabay. Adilso Cruz, a 46-year-old rancher from the Alecrim settlement in Mato Grosso do Sul state, said the water shortages began around 2013, coinciding with the growth of eucalyptus plantations […]

Causal structure and topology change in (2 1)-dimensional simplicial gravity
Seth K. Asante, Bj\"orn Borgolte
https://arxiv.org/abs/2507.10697 https:/…

Causal structure and topology change in (2+1)-dimensional simplicial gravity
We develop a systematic method for analyzing the causal structure at vertices in (2+1)-dimensional Lorentzian simplicial gravity. By examining the intersection patterns of lightcones emanating from a vertex with its simplicial neighbourhood, we identify 13 distinct causal types of Lorentzian tetrahedra-excluding configurations with null faces. This forms the basis for a topological classification of the local causal structure in terms of the number of connected spacelike and timelike regions on…

50 years ago tonight in #berkeley, the final show by #JerryGarcia & legion of mary, also the last circulating garcia/saunders tape until their 1978-1979 reunion (though they gig together ’til the end of july). audience tape:

and, 50 years ago today, following the dead session at ace’s, #JerryGarcia & merl saunders in #berkeley with a mystery drummer, presumably the same as the previous show. bob menke/louis falenga audience tape: