Metrics with positive Ricci eigenvalue sums on $\mathbb{T}^k\times \mathbb{S}^m$
Huibin Chen, Yiyue Zhang
https://arxiv.org/abs/2609.15814 https://arxiv.org/pdf/2609.15814 https://arxiv.org/html/2609.15814
arXiv:2609.15814v1 Announce Type: new
Abstract: We construct metrics with $k$-positive Ricci curvature on $\mathbb{T}^k\times \mathbb{S}^m$, for $k,m\geq2$, arbitrarily close to the standard flat-round product in the smooth topology. The two-torus case disproves Wolfson's conjecture that every closed manifold with two-positive Ricci curvature has virtually free fundamental group. We also establish a local obstruction to two-positive Ricci curvature near closed backgrounds carrying three orthonormal parallel one-forms.
toXiv_bot_toot
«Zehntausende US-Dollar Schaden durch aufgeblähte Sicherheitswarnungen:
Meldungen zu Sicherheitslücken sind für Open-Source-Projekte wichtig – viele davon seien inzwischen aber aufgeblähtes Marketing, meint Peter Gutmann.»
Genau so läuft das KI-Marketing. Fühle dich sicher wenn du AI nutzt, weil du unbegründete Angst davor hast. So wird Open-Source schlecht geredet, damit teure Closed-Source Produkte anscheinend sicher sein sollten.
🙄
Nobody Closed the Gate: How Traditions Convince Themselves That Thinking Ended, and Who Collects the Toll
In 1984 a legal historian named Wael Hallaq published a study whose title was a question: "Was the Gate of Ijtihad Closed?" The question sounds technical, and the journal that carried it, the International Journal of Middle East Studies, is read by a…
So after over a month of intending to go get a mani/pedi, yesterday I finally said “F it” grabbed my gift cards & just got in the car and drove to the salon
Reader, you’ll NEVER guess what the ONE day a week the salon is closed.
😂🤦🏻♀️
Nearly 5 years of work later, I've successfully closed the Node.js TLS fingerprinting issue: https://github.com/nodejs/node/issues/41112.
As of Node 26.4.0, it's possible to match most common TLS fingerprints in Node directly. I've published a library to do all the hard wo…
Bank accounts held by President Donald Trump were closed by Capital One in 2021
-- after it flagged financial activity that had characteristics of money laundering, the bank disclosed in a court filing over the weekend.
The court filing is tied to a lawsuit filed against Capital One by one of Trump’s financial holding companies shortly after he was sworn into office a second time.
Trump alleges that Capital One illegally closed his accounts for political reasons, following …
I see that IDScan is offering free barn door closing services¹ after ensuring that all the horses are out of the barn, out of sight, and utterly irrecoverable.
¹Free "we promise to close your barn door but that doesn't mean your barn door will actually be closed" services.
I’m really impressed by how flush the bridge hinge is while closed, yet the bridge does also open #Lego
Is this still being maintained?? A little (big?) list of my open source projects sorted by how much they’re being neglected (descending).
https://www.zachleat.com/projects/
30k GitHub stars.
5.7M npm downloads last month.
4.7k issues closed and 2.8k PRs closed 🤯
EA says its $55B acquisition by PIF, Silver Lake, and Affinity Partners has closed, taking the company private; the deal includes $20B in debt financing (Jay Peters/The Verge)
https://www.theverge.com/games/974736/ea-private-company-deal-closed
For SF residents, since Alert SF hasn't posted anything: fire at Broderick/California, a lot of equipment on site. 4 pm
California closed Divisadero to Baker, Divisadero & Broderick closed Sacramento to Pine,.
1 California and 24 Divisadero redirected.
For SF residents, since Alert SF hasn't posted anything: fire at Broderick/California, a lot of equipment on site. 4 pm
California closed Divisadero to Baker, Divisadero & Broderick closed Sacramento to Pine,.
1 California and 24 Divisadero redirected.
How to spot if your cat is planning to murder you.
#Caturday #CatsOfMastodon
And they want us back to work four days a week,but the transit system is late, cancelled or the trains break down. Please explain why remote working is not the preferred option and RTO is so good?
https://www.cbc.ca/news/canada/o…
the 9yo made a fortune teller out of seaweed
Closed-Form of the Local Galactic Potential and Stellar Distribution Function from Gaia DR3
Indranil Das, Adam Kamoski, Dora Demiri, Brianna Isola, Hanieh Karimi, Dmitrii S. Zagorulia
https://arxiv.org/abs/2609.09011 https://arxiv.org/pdf/2609.09011 https://arxiv.org/html/2609.09011
arXiv:2609.09011v1 Announce Type: new
Abstract: The local dark matter density determines the strength of the signal expected in direct-detection experiments, yet published estimates from stellar motions disagree by more than their errors, and the most recent machine-learning analysis of Gaia data finds a local density consistent with zero. According to Jeans' theorem, a distribution function built from integrals of motion satisfies the collisionless Boltzmann equation (CBE) trivially for any choice of potential, so a search that simultaneously fits the distribution function and the potential to the CBE identifies neither. Our pipeline instead estimates the distribution function in isolation, linearizing the equation in terms of accelerations and allowing for direct measurement of the local force field, and then fits closed forms to that field via symbolic regression. Throughout, we find that the usable information lies not in the CBE residual but in the stellar number counts, the observable most distorted by survey selection. Along the vertical profile, our recovered potential agrees with the classical self-gravitating isothermal disc.
toXiv_bot_toot
Went to buy my kid a gift from this fantastic, beloved institution (Kinderladen Wirth, Mainz) that I've been going to for decades (and my kid has fond memories of too), was confused by the closed doors, and then discovered this. )-: *I'm* heartbroken, and I don't even live here!
Non-uniqueness of geodesic limits and a question of Grayson and Gage
Shrey Aryan, Tang-Kai Lee
https://arxiv.org/abs/2608.04855 https://arxiv.org/pdf/2608.04855 https://arxiv.org/html/2608.04855
arXiv:2608.04855v1 Announce Type: new
Abstract: Grayson and Gage proved that an immortal curve shortening flow of simple closed curves on a closed surface converges subsequentially to a closed geodesic, and they asked whether this limiting geodesic is unique. We answer this question negatively by constructing a smooth Riemannian metric on $\mathbb{S}^2$ and an immortal simple closed curve shortening flow that converges along different sequences of times to every geodesic in a one-parameter family of distinct simple closed geodesics.
toXiv_bot_toot
Billionaire Elon Musk likely broke the law when he handed out $1 million checks to voters just days before Wisconsin’s Supreme Court election,
a state election board found.
The Wisconsin Elections Commission, currently split evenly between Democrats and Republicans,
voted 5-1 in a closed session last week to refer the complaints to the Brown County district attorney’s office,
the commission's spokesperson Emilee Miklas told the Associated Press.
The panel r…
The problem with adaptive DBS https://tmrwedition.com/2026/09/12/the-problem-with-adaptive-dbs/ Critique on closed-loop brain stimulation for treating Parkinson's disease: over-reliance on the beta signal. Should also monitor tremor, gait, balance and dyskinesia fo…
SF-based Vals, which develops evaluations and benchmarks to test AI models on real-world tasks, raised a $40M Series A led by a16z at a $400M valuation (Abhinaya Prabhu/Tech Funding News)
https://techfundingnews.com/a16z-leads-40m-va…
Beth Macy built her career writing about the plagues inflicted on rural America,
most famously the opioid epidemic in “Dopesick,”
but also the job losses from trade agreements that devastated communities across Appalachia.
Now running as a Democrat in the kind of House district she says she is uniquely qualified to reach,
she recited the 4-H pledge from memory
— “I pledge my head to clearer thinking,
my heart to greater loyalty,
my hands to larger se…
Just closed out the last release blocking bug and tagged ngscopeclient v0.2-rc1. Planning to release v0.2 in the next couple of days unless there's any major issues.
Please test and let me know how it works for you! Official (unsigned) release binaries are building now and I'll be pushing to github later in the morning.
Databricks closed a $5B funding round at a $190B valuation, six months after raising $5B at a $134B valuation, and says it has crossed $7B in revenue run rate (Samantha Subin/CNBC)
https://www.cnbc.com/2026/08/13/databricks-funding-round-190-billion-valuat…
RE: https://cosocial.ca/@dyckron/117061983156044744
Are Hartley Vale and Browns Gap Rds closed?
It’s not a great route, and certainly not suitable for heavy traffic, but it’s a lot quicker than turning off Great Western Highway, taking the full length of…
Pete Hegseth downplays conditions on USS Abraham Lincoln after reports of food shortages and a mental health crises on board
This comes after several reports about food shortages and an intensifying mental health crisis on the vessel, that has now been deployed for more than 200 days,
after it was redirected to the Middle East to assist with the military operation in Iran.
“We make sure every ship, every crew, every captain has everything we can provide them at every si…
Evaluating closed-loop EEG feedback for simulated prosthetic vision in immersive VR: a sham-controlled feasibility study https://arxiv.org/abs/2607.23889 Would it benefit noninvasive visual-to-auditory sensory substitution?
Existence of least-area discs
Alexander Lytchak, Stephan Stadler
https://arxiv.org/abs/2609.15507 https://arxiv.org/pdf/2609.15507 https://arxiv.org/html/2609.15507
arXiv:2609.15507v1 Announce Type: new
Abstract: We prove that every closed Lipschitz curve in Euclidean space extends to a Lipschitz disc of least area. The proof is geometric and applies more generally to metric spaces with curvature bounded above in the sense of Alexandrov.
toXiv_bot_toot
Beloved Big Sur destinations under evacuation orders as Timber fire burns more than 1,700 acres
Pacific Coast Highway is currently closed to nonresidents from Point Sur Lighthouse to Vista Point, according to the California Highway Patrol.
“The fire remains highly active, and conditions can change rapidly,” the Monterey County Sheriff’s Office said Monday.
“We are respectfully asking the public to stay out of the area. Roadways must remain clear so first responders can wor…
Mark Zuckerberg criticizes "closed" AI model makers, says AI labs are espousing a "discourse ... so filled with doom", and defends distillation as a principle (Jamie John/Financial Times)
https://www.ft.com/content/4e3957f8-ea7c-4c46-a3de-cdce8e526878
Capital One has never accused the Trump Organization of money laundering.
But the bank's recent disclosure argues that “documents and Plaintiffs’ own allegations make clear that Capital One closed Plaintiffs’ accounts for anti-money laundering (‘AML’) reasons.
“The closures were the result of months of analysis and a careful review by Capital One’s AML team in accordance with bank policies and regulatory guidance.”
Capital One gave notice of its plans to close more …
JD Vance just used Charlie Kirk as his vehicle to implore voters who may disagree with Trump administration policies not to abandon the party in key congressional races this November.
“Charlie hated war. That was his view. Now, of course, there are people who love what we’ve done and people who don’t,” Vance said, referring to the ongoing conflict in Iran that has caused prices across the country to spike.
(while passing over the bigotry, corrupt self-dealing, extra judicial murd…
Tesla stock closed down 14.52% and Alphabet closed down 6.89% after they signaled increased AI spending, amid worries about the mounting costs of the AI boom (Arjun Kharpal/CNBC)
https://www.cnbc.com/2026/07/23/tesla-tsla-alphabet-googl-stock-today.html
Sources: Beijing recently held meetings with Alibaba, ByteDance, Z.ai, and others to discuss restricting overseas access to advanced open and closed AI models (Fanny Potkin/Reuters)
https://www.reuters.com/world/beijing-is-l
The polls have closed in Tennessee as conservative firebrand Sen. Marsha Blackburn aims to change her work address from Washington D.C., to Nashville.
The former longtime congresswoman and two-term senator
with a robust national profile thanks to her regular cable news appearances
is considered the front-runner in Thursday's Republican gubernatorial primary, in the race to succeed term-limited GOP Gov. Bill Lee.
The Republican face-off for governor of Tennessee,
A joint preliminary evaluation by the UK's AISI and the US' CAISI finds Kimi K3 trails leading US frontier closed weight models on cyber capability (AI Security Institute)
https://www.aisi.gov.uk/blog/preliminary-assessment-of-kimi-k3s-cyber-capabil…
As the country’s population rapidly ages
— with adults over 65 set to outnumber children by 2034
— more Americans will find themselves in need of care.
Many families remain wholly unprepared to shoulder the weight of this demographic shift,
even if they must
https://www.
A look at Sequoia's revamped strategy under new stewards Alfred Lin and Pat Grady, including bold AI bets; sources: Sequoia recently closed $10B in new funding (Bloomberg)
Cassidy says he will vote to confirm Todd Blanche as attorney general:
'I will be criticized for this vote'
Senator Bill Cassidy,
the last Republican who was undecided about Todd Blanche’s nomination as attorney general,
said he would vote to confirm Blanche.
He noted that while Blanche, who previously served as Donald Trump’s personal lawyer, is “not perfect”,
it is ultimately a decision between him or “another acting attorney general who may not …
With each successive era of AI, from early scaling, to reasoning, to agentic, open models have taken half as long to catch up to the first closed model (SemiAnalysis)
https://newsletter.semianalysis.com/p/are-open-models-catching-up
Trump berated Senate Republicans face to face on Wednesday
for allowing a vote to block his war in Iran,
further escalating a feud that has diverted GOP efforts to focus on election-year affordability issues
and brought much of the chamber’s business to a halt.
Invited by Florida Sen. Rick Scott to speak at a GOP luncheon in the Capitol,
Trump had signaled ahead of time that he would use the closed-door meeting to push senators to pass his proof-of-citizenship v…
Democratic lawmakers are demanding that the Department of Homeland Security turn over records
and fully cooperate with an investigation into the death of
Nurul Amin Shah Alam,
a nearly blind Rohingya refugee who died after US border agents
left him outside a closed coffee shop on a freezing night in Buffalo earlier this year.
At a press conference in Buffalo on Friday,
standing just a few feet away from where Shah was found dead,
Tim Kennedy of New Y…
Amazon becomes the fifth company to reach a $3T market cap, joining Nvidia, Alphabet, Microsoft, and Apple; its stock closed up 4.58% on Monday (Jeran Wittenstein/Bloomberg)
https://www.bloomberg.com/news/articles/2026-08-03/ama…
LCDS closed its investigation and shared results with the attorney general, then never heard back.
In its motion to dismiss, the school argued that it had no duty to report the images to local police because it’s only required to report tips on actual child abuse,
-- and AI images don’t qualify as that in the state, at least not yet
Lime's shares closed up 4% in its Nasdaq debut on Wednesday, valuing the company at ~$1.7B, after Lime and existing stockholders raised ~$174M in its US IPO (Reuters)
https://www.reuters.com/business/finance/uber-backed-limes-shares-rise-na…
Bending Spoons, which owns Vimeo and AOL, closed up 40% in its US market debut on Wednesday at a $25.7B valuation, after raising $1.68B in its IPO (Bloomberg)
https://www.bloomberg.com/news/articles/2026-07-01/aol-owner-bending-spo…
Amazon shares closed up 15.32% on Friday, the biggest one-day jump since April 2012, after the company reported accelerating AWS revenue (Spencer Soper/Bloomberg)
https://www.bloomberg.com/news/articles/2026-07-30/amazon-reports-…
a16z says its fifth growth fund has closed additional capital, bringing its total to $8.5B (Andreessen Horowitz)
https://a16z.com/expanding-the-a16z-growth-fund-and-platform/
Microsoft's stock closed up 15.5% on Thursday, adding ~$450B to its market capitalization, the largest single-day market value increase in stock market history (Subrat Patnaik/Bloomberg)