Tootfinder

The 3D index and Dehn filling
Daniele Celoria, Craig D. Hodgson, J. Hyam Rubinstein
https://arxiv.org/abs/2509.09886 https://arxiv.org/pdf/2509.09886

The 3D index and Dehn filling
We provide a rigorous proof of the Gang-Yonekura formula describing the transformation of the 3D index under Dehn filling a cusp in an orientable 3-manifold. The 3D index, originally introduced by Dimofte, Gaiotto and Gukov, is a physically inspired q-series that encodes deep topological and geometric information about cusped 3-manifolds. Building on the interpretation of the 3D index as a generating function over Q-normal surfaces, we introduce a relative version of the index for ideal triangu…

Moody Urbanity - UP 🔝
情绪化城市 - 上面 🔝
📷 Nikon FE
🎞️ Ilford HP5 Plus 400, expired 1993
#filmphotography #Photography #blackandwhite

Interviews with copywriters on generative AI's impact: job losses to AI, work used for training, falling wages and rates, freelancers losing clients, and more (Brian Merchant/Blood in the Machine)
https://www.bloodinthemachine.com/p/i-was-forced-to-use-ai-until-the

"I was forced to use AI until the day I was laid off." Copywriters reveal how AI has decimated their industry
Copywriters were one of the first to have their jobs targeted by AI firms. These are their stories, three years into the AI era.

Feeling very inadequate after watching 7Asian craft an entire floating village by himself. Watch 1 year of amazing engineering & hard work in just 1hr.
▶️ He Left Civilization to Build a Floating Self-Sustaining Island | by 7Asian
https://youtube.com/watch?v=AJSXVUd819

After almost two centuries,
Baker & Taylor,
a nationwide library book distributor,
will reportedly shut down operations in January.
Baker & Taylor CEO Aman Kochar told employees Monday that following a recent failed acquisition deal with ReaderLink, the Charlotte-based company has no viable path forward, though he had hoped to find another solution

Baker & Taylor Prepares Plan to Shut Down
At a town hall yesterday, B&T owner and CEO Aman Kochar announced that following the termination of the ReaderLink acquisition deal, he does not see a path to keep the library wholesaler in business.

Conductance Plateaus at Quantum Hall Integer Filling Factors in Germanium Quantum Point Contacts
Karina Hudson, Davide Costa, Davide Degli Esposti, Lucas E. A. Stehouwer, Giordano Scappucci
https://arxiv.org/abs/2510.12554

Conductance Plateaus at Quantum Hall Integer Filling Factors in Germanium Quantum Point Contacts
Constricting transport through a one-dimensional quantum point contact in the quantum Hall regime enables gate-tunable selection of the edge modes propagating between voltage probe electrodes. Here we investigate the quantum Hall effect in a quantum point contact fabricated on low disorder strained germanium quantum wells. For increasing magnetic field, we observe Zeeman spin-split 1D ballistic hole transport evolving to integer quantum Hall states, with well-defined quantised conductance incre…

China’s CO2 emissions have now been flat or falling for 18 months.
The rapid adoption of electric vehicles (EVs) saw CO2 emissions from transport fuel drop by 5% year-on-year, while there were also declines from cement and steel production.
While emissions from the power sector were flat year-on-year, a big rise in the chemical industry’s CO2 output offset reductions elsewhere.

Analysis: China’s CO2 emissions have now been flat or falling for 18 months - Carbon Brief
China’s carbon dioxide (CO2) emissions were unchanged from a year earlier in the third quarter of 2025, extending a flat or falling trend that started in March 2024.

On the integral simplicial volume of cyclic covers of mapping tori
Federica Bertolotti, Ervin Hadziosmanovic
https://arxiv.org/abs/2510.11651 https://arxiv…

On the integral simplicial volume of cyclic covers of mapping tori
In this paper, we investigate the asymptotic behavior of the integral simplicial volume of cyclic covers of manifolds that fiber over the circle with fiber given by an $n$-dimensional torus. By studying the integral filling volume -- an invariant introduced by Frigerio and the first author -- for the monodromy, we establish both lower and upper bounds for the limit of the integral simplicial volume of these covers, normalized by the degree of the covering. These bounds are expressed in terms of…

Dozens of coal miners and their families are protesting the Trump administration outside the Labor Department building,
arguing it has failed to protect them from black lung disease,
an incurable illness caused by inhaling coal and silica dust.
They have been waiting months for the government to enforce federal limits on silica dust,
a carcinogen that has led to a recent spike in the disease.
But mining industry groups have sued to block the rule,
and the T…

Coal Miners With Black Lung Say They Are ‘Cast Aside to Die’ Under Trump
President Trump has been a cheerleader for coal miners. But these miners say his administration is failing to enforce limits on a lethal workplace hazard.

Indonesia's film industry is embracing AI tools to produce Hollywood-style movies at a significantly lower cost; the average local film budget is about $602,500 (Linda Yulisman/Rest of World)
https://restofworld.org/2025/indonesia-ai-movies/

Indonesia’s film industry embraces AI to make Hollywood-style movies for cheap
Generative AI video and text tools are transforming some of the labor-intensive parts of filmmaking, and are largely welcomed in Indonesia’s homegrown industry.