u/Nunki08
arXiv now limits submitters to up to two submissions per calendar month
blog.arxiv.orgarXiv receives Multiyear Philanthropic Commitments to Support Its Launch as an Independent Nonprofit
$17.2 million investment, spanning three to five years from Simons Foundation International, XTX Markets, and Siegel Family Endowment
https://blog.arxiv.org/2026/09/23/arxiv-receives-multiyear-investment/
The share of math preprints on arXiv that acknowledge AI has risen rapidly, from 4% in April to 25% in August.
From Epoch AI on 𝕏: https://x.com/EpochAIResearch/status/2101083734401601837
AI is acknowledged for many things, including literature review and coding, but it also generates substantial research ideas, with 6% of papers in August acknowledging this kind of contribution.
The data: https://epoch.ai/data/arxiv?view=graph
The Four-Color Theorem Gets a Rare New Proof | Quanta Magazine - Gregory Barber | By revisiting the famous problem — which was controversially solved in the 1970s with the help of computers — mathematicians have gained important new insights into the nature of graphs.
The paper: The Four Color Theorem with Linearly Many Reducible Configurations and Near-Linear Time Coloring
Yuta Inoue, Ken-ichi Kawarabayashi, Atsuyuki Miyashita, Bojan Mohar, Carsten Thomassen, Mikkel Thorup
arXiv:2603.24880 [math.CO]: https://arxiv.org/abs/2603.24880
OK, topologists, which mug do you prefer?
DeepSeek Flash 4.1 is already being tested via API and rolling out.
Translation: "Internal beta testing for an intermediate version of DeepSeek V4.1 Flash is now open; you are welcome to try it out. It adopts a new model architecture featuring native multimodal support, stronger capabilities, faster speeds, and lower costs.
Keep your base_url unchanged and set the model name to deepseek-v4.1-flash-expires-on-0910 to call the API. Current pricing is identical to deepseek-v4-flash, with a rate limit of 20 concurrent requests per account."
From Chubby on 𝕏: https://x.com/kimmonismus/status/2097286327909675477
While Navier-Stokes hangs in the balance, the rest of the world is asking why algebra uses letters
From Jared Duker Lichtman on 𝕏: https://x.com/jdlichtman/status/2097249165730349398
Mistral is announcing a €3B Series D funding round at a post-money valuation of more than €21 billion, the largest equity fundraising round ever completed by a European technology company
mistral.aiNVIDIA's $12,930,300,000.00 acquisition of Hugging Face contains an easter egg. The first 6 numbers of the acquisition price represent the decimal conversion of Unicode character U+1F917. The 🤗 emoji.
From:
Polymarket on 𝕏: https://x.com/Polymarket/status/2095646821485842805
Julien Chaumond on 𝕏: https://x.com/julien_c/status/2095822387895824836
Dans le cadre d’un mouvement porté par l’Union africaine, Paris a annoncé, vendredi 4 septembre, abandonner la projection dite « de Mercator ». Pour respecter la réalité, la place de la France sera désormais plus petite sur les planisphères.
lemonde.frRSA-260 has been factored
RSA-260 has 260 decimal digits (862 bits) and was factored by Eric Lu on September 3, 2026
RSA-260 =
4397328654844826923795068102505872571721883526553349659561256924505973939597593482272505698004801207988043088656411102133523080581
×
5028695206842569864686141618253083416610081090075366674776775706538324961364412200138116378509733307971876652984898985905923678379
From Wikipedia: https://en.wikipedia.org/wiki/RSA_numbers#RSA-260
penlu on 𝕏: https://x.com/penlume/status/2095372672356212876
This mug makes topologists sad
From Anthony Bonato on 𝕏: https://x.com/Anthony_Bonato/status/2094540251372937672
‘Stunning’ Percolation Proof Solves Decades-Old Puzzle About Phase Transitions | Quanta Magazine - Leila Sloman | Mathematicians found that a broad class of networks will abruptly shift behavior past a critical point
The paper: Supercritical sharpness of percolation
Sahar Diskin, Philip Easo, Ritvik Ramanan Radhakrishnan, Benny Sudakov, Vincent Tassion
arXiv:2603.03257 [math.PR]: https://arxiv.org/abs/2603.03257
Someone needs to give this test to AI and see what it comes up with
From Anthony Bonato on 𝕏: https://x.com/Anthony_Bonato/status/2093809777625141342
Hugging Face: $2.6M of Microducks ordered in the first 24h
From Thomas Wolf on 𝕏: https://x.com/Thom_Wolf/status/2093295950605279501
Pollen Robotics/Hugging Face debuts Microduck, an $399 waddling robot
Website: https://pollen-robotics.com/microduck
GitHub: https://github.com/pollen-robotics/microduck
From Pollen Robotics on 𝕏: https://x.com/pollenrobotics/status/2092915032052879425
Nvidia has been in talks to acquire Hugging Face for more than $13 billion - Business Insider
https://www.businessinsider.com/nvidia-in-talks-to-buy-hugging-face-13-billion-dollars-2026-8
Edit: The Information is reporting that the deal is done: Nvidia Agrees to Buy Open Source Model Repository Hugging Face For $12.9 Billion (paywall): https://www.theinformation.com/articles/nvidia-agrees-buy-open-source-model-repository-hugging-face-12-9-billion
Fields Medalists from 2026 to 2002
2026 (Philadelphia): Yu Deng, John Pardon, Jacob Tsimerman, Hong Wang
2022 (Helsinki): Hugo Duminil-Copin, June Huh, James Maynard, Maryna Viazovska
2018 (Rio de Janeiro): Caucher Birkar, Alessio Figalli, Peter Scholze, Akshay Venkatesh
2014 (Seoul): Artur Avila, Manjul Bhargava, Martin Hairer, Maryam Mirzakhani
2010 (Hyderabad): Elon Lindenstrauss, Ngô Bảo Châu, Stanislav Smirnov, Cédric Villani
2006 (Madrid): Andrei Okounkov, Terence Tao, Wendelin Werner, (Grigori Perelman, declined)
2002 (Beijing): Laurent Lafforgue, Vladimir Voevodsky
Bonus: 1990 (Kyoto): Vladimir Drinfeld, Vaughan Jones, Shigefumi Mori, Edward Witten
I don't have any photos from 1998 or 1994. Does anyone have a source?
1998 (Berlin): Richard Borcherds, Timothy Gowers, Maxim Kontsevich, Curtis McMullen
1994 (Zürich): Jean Bourgain, Pierre-Louis Lions, Jean-Christophe Yoccoz, Efim Zelmanov