Reposted by Marius LemmNicolas Addington @naddington.bsky.social · 08/10/2026👀 arxiv.org/abs/2610.10072 26219
Marius Lemm @mariuslemm.bsky.social · 11hThe AI shortcuts the production of solutions, but not of understanding. That process still takes time and it will naturally point the way to new and ambitious problems. 000
Marius Lemm @mariuslemm.bsky.social · 11hHow do we make the process of digesting the OpenAI drop of math solutions productive and fun, especially for our junior researchers? To me, a possible answer lies in reading groups, where we go through selected AI solutions together. 100
Marius Lemm @mariuslemm.bsky.social · 09/10/2026There's a website to celebrate the work of mathematicians cited in the OpenAI results citedbyagi.com I was delighted to see one of my heroes, Elliott H. Lieb, high up on the list!citedbyagi.comCited by AGIThe mathematicians behind OpenAI's results. Every human author cited across the openai/math manuscripts, with each count traced back to its source. 020
Marius Lemm @mariuslemm.bsky.social · 08/10/2026Lieb-Robinson bounds control information flow in operator norm, so for all input states It was expected this can't hold for bosons, because bad input states do exist! With Tim Möbus, we show that dissipation recovers operator-norm LRBs for bosons: arxiv.org/pdf/2610.01669arxiv.org 020
Marius Lemm @mariuslemm.bsky.social · 07/10/2026I think we need to digest these proofs and then come up with new and harder problems. It’s both disorienting and liberating. 021
Marius Lemm @mariuslemm.bsky.social · 07/10/2026Direct link to the openai/math overview file: github.com/openai/math/... What a time!github.commath/overview.pdf at main · openai/mathContribute to openai/math development by creating an account on GitHub. 100
Reposted by Marius LemmarXiv @arxiv.bsky.social · 01/10/2026arXiv has updated our policy on rate limiting for all submitters. This update was made to fairly distribute moderator time & support the arXiv community of staff, volunteers, readers & authors. Please read our announcement to learn more: blog.arxiv.org/2026/10/01/updated-r… 216874
Reposted by Marius LemmDaniel Litt @littmath.bsky.social · 14/09/2026I've written an essay on how I think the mathematics profession should adapt to highly capable AI systems. It's hosted here on "Proofs and Prompts": proofsandprompts.com/2026/09/14/a... though you should also feel free to complain/comment on my website here: daniellitt.com/blog/2026/9/...proofsandprompts.comA beginning for mathematicsDaniel Litt, professor at the University of Toronto Three years ago, AI systems could not reliably add two numbers. A year ago, internal models at OpenAI and DeepMind received the equivalent of a g… 66513
Marius Lemm @mariuslemm.bsky.social · 15/09/2026Open tenure-track professorship in Tübingen on theoretical solid-state physics (correlated quantum phenomena)! www.quantiki.org/position/jun... Deadline: September 27uni-tuebingen.deJunior Professor for Theoretical Solid-State Physics (f/m/d) 001
Marius Lemm @mariuslemm.bsky.social · 11/09/2026Seems to me like the key skills needed for effectively using AI in math research overlap with the skill set of experienced advisors: asking deep questions, identifying promising directions, teaching good presentation skills 151
Marius Lemm @mariuslemm.bsky.social · 08/09/2026The purpose of mathematics is human understanding, and this achievement, and the process that led to it, will bear fruit for a long time to come." Ravi Vakil, President of the AMS John Meier, CEO of the AMS 020
Marius Lemm @mariuslemm.bsky.social · 08/09/2026This story began with Navier, Stokes, Leray, and Ladyzhenskaya and has culminated in the recent breakthroughs of Córdoba and Martínez-Zoroa, then — assisted by new technologies — Alpöge and Buckmaster, with the final steps taken by OpenAI mathematicians. 110
Marius Lemm @mariuslemm.bsky.social · 08/09/2026Statement by the American Mathematical Society: ams.org/news?news_id... "The news today of progress on resolving the Navier–Stokes problem, one of mathematics' great longstanding challenges concerning the equations that govern the flow of fluids, represents a milestone advance in human knowledge.ams.org 111
Marius Lemm @mariuslemm.bsky.social · 04/09/2026Talked about our prethermal MBL paper at the Newton Institute a few days ago Recording is available here: www.youtube.com/watch?v=OfXf...youtube.comProf. Marius Lemm | On the transport properties of disordered quantum many-body modelsYouTube video by INI Seminar Room 1 010
Reposted by Marius LemmWebsEdge Science @websedgescience.bsky.social · 27/07/2026Lightning strikes and the flash reaches you almost instantly, but the thunder takes longer. At @unituebingen.bsky.social, mathematicians study the quantum equivalent: how fast information can travel through an interacting quantum system. #ICM2026 youtu.be/8Uuef69MoNMyoutu.beThe Mathematics of Quantum Propagation | University of TübingenPhysics has repeatedly transformed mathematics by creating entirely new scientific questions. From fluid dynamics to gen 021
Marius Lemm @mariuslemm.bsky.social · 27/07/2026Excited to see our research featured on ICMtv! How fast does information travel in a quantum many-body system? We're building mathematical tools to control the quantum "speed of sound". Watch the full YouTube video to learn more about our work: www.youtube.com/watch?v=8Uue... #MathematicalPhysicsyoutube.comThe Mathematics of Quantum Propagation | University of TübingenYouTube video by WebsEdgeScience 010
Reposted by Marius LemmQuanta Magazine @quantamagazine.org · 08/07/2026Chinmay Nirkhe, Mark Zhandry, John Bostanci, and Jonas Haferkamp blended ideas from cryptography, statistical physics, and other far-flung fields to show that quantum proofs are more powerful than classical ones. www.quantamagazine.org/researchers-... 0359
Marius Lemm @mariuslemm.bsky.social · 10/06/2026Sharing a postdoc opening for a Hooke/Titchmarsh Research Fellowship in Complex Systems at Oxford. Independent position with possibility to collaborate, e.g., with Random Matrix Theory group around Jon Keating & Joscha Henheik For details, see: www.maths.ox.ac.uk/node/81487 Deadline: June 24maths.ox.ac.ukHooke/Titchmarsh Research Fellow (Complex Systems) | Mathematical Institute 000
Reposted by Marius LemmTimothy Gowers @wtgowers.bsky.social · 20/05/2026OpenAI's claim that this is a central conjecture in discrete geometry is not an exaggeration. This will I think be looked back on as the first time that AI solved a major mathematics problem (defined as a problem that all experts in some subfield had thought about). openai.com/index/model-...openai.comAn OpenAI model has disproved a central conjecture in discrete geometryAn OpenAI model solved the 80-year-old unit distance problem, disproving a major conjecture in discrete geometry and marking a milestone in AI-driven mathematics. 17650190
Marius Lemm @mariuslemm.bsky.social · 25/04/2026If you're looking for an M.Sc. program in mathematical quantum physics and general relativity, consider the Tübingen International M.Sc. Program in #MathematicalPhysics www.math.uni-tuebingen.de/en/mmp Open for applicationsmath.uni-tuebingen.deMaster in Mathematical Physics 030
Reposted by Marius LemmEuropean Research Council (ERC) @erc.europa.eu · 21/04/2026Congratulations to ERG grantee Frank Merle on winning the 2026 Breakthrough Prize in Mathematics for his work on nonlinear evolution equations & their role in understanding complex physical systems. 🔗 breakthroughprize.org/News/98breakthroughprize.org Breakthrough Prize – Breakthrough Prize Announces 2026 Laureates 0163
Reposted by Marius LemmUniversität Tübingen @unituebingen.bsky.social · 02/02/2026Forschung im Überschneidungsbereich von #Analysis, #Geometrie und #Physik: Professor Gerhard Huisken ist heute für herausragende Verdienste um die #Mathematik mit dem #Bundesverdienstkreuz geehrt worden. 👏 uni-tuebingen.de/universitaet... @mwk-bw.bsky.social 031
Reposted by Marius LemmAmerican Mathematical Society @amermathsoc.bsky.social · 19/12/2025The 2026 Leroy P. Steele Prize for Seminal Contribution to Research is awarded to László Erdős, Benjamin Schlein, and Horng-Tzer Yau for their series of three papers. Read more. Link in comments. 131
Reposted by Marius LemmTerence Tao @teorth.bsky.social · 06/11/2025A new paper with Bogdan Georgiev, Javier Gomez-Serrano, and Adam Zsolt Wagner: "Mathematical exploration and discovery at scale" arxiv.org/abs/2511.02864. Further discussion is at terrytao.wordpress.com/2025/11/05/m...arxiv.orgMathematical exploration and discovery at scaleAlphaEvolve is a generic evolutionary coding agent that combines the generative capabilities of LLMs with automated evaluation in an iterative evolutionary framework that proposes, tests, and refines ... 012827
Marius Lemm @mariuslemm.bsky.social · 15/10/2025Are the dynamics of disordered quantum many-body systems easier to simulate? --> Yes, because entanglement spreads slowly for a non-perturbatively long time (a.k.a. "prethermal MBL"). This is true in any dimension. arxiv.org/pdf/2510.11831 Thanks to my collaborators Ben McDonough and Andy Lucas!arxiv.org 152
Reposted by Marius Lemmanthony-leverrier.bsky.social @anthony-leverrier.bsky.social · 13/10/2025The future is here: a formalization in Lean of the generalized quantum Stein's lemma! Amazing that this can be done. arxiv.org/abs/2510.08672arxiv.orgA Formalization of the Generalized Quantum Stein's Lemma in LeanThe Generalized Quantum Stein's Lemma is a theorem in quantum hypothesis testing that provides an operational meaning to the relative entropy within the context of quantum resource theories. Its origi... 0221
Marius Lemm @mariuslemm.bsky.social · 10/10/2025New preprint on Hamiltonian Learning of Coulomb potentials and smooth potentials in continuous space arxiv.org/abs/2510.08471 Thanks to my collaborators, @hippoquantus.bsky.social , Tim Möbus, and Oliver Siebert!arxiv.orgLearning Coulomb Potentials and Beyond with Fermions in Continuous SpaceWe present a modular algorithm for learning external potentials in continuous-space free-fermion models including Coulomb potentials in any dimension. Compared to the lattice-based approaches, the con... 031
Marius Lemm @mariuslemm.bsky.social · 02/10/2025New preprint with @nickrhj.bsky.social arxiv.org/pdf/2509.22438 Is a typical translation-invariant Hamiltonian gapped or gapless? ---> We prove that for random rank-1 interactions on any bounded-degree graph, the Hamiltonian is *gapped* with high probability as local dimension grows.arxiv.org 092
Reposted by Marius LemmQuanta Magazine @quantamagazine.org · 22/08/2025Horng-Tzer Yau has spent decades studying the interplay of randomness and order in matrices. In 2008, Jun Yin, a former physicist, joined Yau’s group. In spring of 2024, the pair made the biggest advance on the problem since the 1980s. www.quantamagazine.org/new-physics-... 0223
Marius Lemm @mariuslemm.bsky.social · 19/08/2025Open position in Tübingen! Assistant Professor of Mathematical Quantum Theory (non tenure-track, up to 6 years) Deadline is September 30, 2025. More info including how to apply: www.mathjobs.org/jobs/list/26... The last person to hold this position was the formidable @angelacapel.bsky.socialmathjobs.orgMathJobs from the the American Mathematical SocietyMathjobs is an automated job application system sponsored by the AMS. 051
Reposted by Marius LemmJohn Watrous @johnwatrous.bsky.social · 16/07/2025After 3 1/2 years of work my course on quantum computing is finally finished — the "Director's Cut" of Understanding Quantum Information and Computation is now available. arxiv.org/abs/2507.11536arxiv.orgUnderstanding Quantum Information and ComputationThis is a course on the theory of quantum computing. It consists of 16 lessons, each with a video and written component, covering the basics of quantum information, quantum algorithms (including query... 515333
Reposted by Marius LemmWonder of Science @wonderofscience.bsky.social · 15/07/2025Colored droplets in corn syrup seemingly blended together can be returned to their original state by reversing the direction of mixing, a form of laminar flow called "Stokes flow". Credit: UNM Physics & Astronomy 3125979981
Reposted by Marius LemmSteven Strogatz @stevenstrogatz.com · 30/06/2025My latest for @nytimes.com -- please repost so your followers can see this for free. www.nytimes.com/interactive/...nytimes.comHow a Puzzle About Fractions Got Brain Scans Rolling (Gift Article)A story of bowling pins, patterns and medical miracles. 27251
Marius Lemm @mariuslemm.bsky.social · 28/05/2025This year, the fall meeting of the German Physical Society celebrates 100 years of quantum theory quantum25.dpg-tagungen.de Göttingen, September 8-12 The deadline for abstract submission is this Saturday, May 31.quantum25.dpg-tagungen.de2. DPG-Herbsttagung: 100 Jahre Quantenmechanik 000
Marius Lemm @mariuslemm.bsky.social · 08/05/2025New preprint with Carla Rubiliani and Jingxuan Zhang "On the quantum dynamics of long-ranged Bose-Hubbard Hamiltonians" arxiv.org/abs/2505.01786 We prove that the speed of boson propagation is bounded under the optimal long-range condition (for power law exponent \alpha>d+1)arxiv.orgOn the quantum dynamics of long-ranged Bose-Hubbard HamiltoniansWe study the quantum dynamics generated by Bose-Hubbard Hamiltonians with long-ranged (power law) terms. We prove two ballistic propagation bounds for suitable initial states: (i) A bound on all momen... 030
Reposted by Marius LemmDulwich Quantum Computing @dulwichquantum.bsky.social · 03/05/2025Great explanation of the basics of quantum computing and Grover's algorithm by 3Blue1Brown. He also addresses the common misconception of "exponential parallelism". www.youtube.com/watch?v=RQWp...youtube.comBut what is quantum computing? (Grover's Algorithm)YouTube video by 3Blue1Brown 1637
Marius Lemm @mariuslemm.bsky.social · 26/03/2025Until recently, we thought that transporting a macroscopic cloud of particles a distance r in time t is suppressed by the usual LR-type light cone exp(vt-r) Turns out, the decay rate is proportional to the number of transported particles N exp(N(vt-r)) arxiv.org/abs/2503.19788 020
Marius Lemm @mariuslemm.bsky.social · 03/03/2025If you're an undergraduate student interested in the mathematics of quantum physics and general relativity, consider the Tübingen International M.Sc. Program in #MathematicalPhysics www.math.uni-tuebingen.de/en/mmp Opens for applications todaymath.uni-tuebingen.deMaster in Mathematical Physics 053
Reposted by Marius LemmTerence Tao @teorth.bsky.social · 26/02/2025I am happy to announce that the Kakeya set conjecture, one of the most sought after open problems in geometric measure theory, has now been proven (in three dimensions) by Hong Wang and Joshua Zahl! arxiv.org/abs/2502.17655 I discuss some ideas of the proof at terrytao.wordpress.com/2025/02/25/t...arxiv.orgVolume estimates for unions of convex sets, and the Kakeya set conjecture in three dimensionsWe study sets of $δ$ tubes in $\mathbb{R}^3$, with the property that not too many tubes can be contained inside a common convex set $V$. We show that the union of tubes from such a set must have almos... 115437
Marius Lemm @mariuslemm.bsky.social · 21/02/2025Had an amazing week at our Oberwolfach Mini-Workshop "New Directions in Correlated Quantum Systems" Huge thanks to our enthusiastic participants from both mathematics & physics! 010
Reposted by Marius LemmVictor V. Albert @vva.bsky.social · 13/02/2025ArXiv quant-ph needs to be split up! Paul Ginsparg lists Daniel Gottesman's proposed subcategories at his @aspenphysics.bsky.social talk. He is looking for feedback: please reply, dm, or email. 44616
Marius Lemm @mariuslemm.bsky.social · 10/02/2025My colleague Mitia Duerinckx in Brussels is accepting applications for an open postdoc position in PDE & mathematical physics It's funded by Mitia's ERC grant "PASTIS: Scaling limits of particle systems and microstructural disorder" For more info, see mitia.duerinckx.web.ulb.be/postdoc-posi....mitia.duerinckx.web.ulb.beMitia Duerinckx 000
Reposted by Marius LemmDavid Sutter @quantum-sutter.bsky.social · 05/02/2025Uhlmann's theorem states that the fidelity of two (mixed) states can be expressed in terms of their purifications (where the fidelity simplifies). In arxiv.org/abs/2502.01749 we generalize Uhlmann's theorem to Rényi relative entropies.arxiv.orgUhlmann's theorem for relative entropiesUhlmann's theorem states that, for any two quantum states $ρ_{AB}$ and $σ_A$, there exists an extension $σ_{AB}$ of $σ_A$ such that the fidelity between $ρ_{AB}$ and $σ_{AB}$ equals the fidelity betwe... 062
Reposted by Marius LemmZoltán Zimborás @zoltanzimboras.bsky.social · 13/01/2025To reach some consensus about the prospects of near-term (late nisq and early fault tolerant) quantum computing, we had a 3-day discussion event (“Quantum Now”) in Lapland with both optimists and pessimists. This continued at SeeQA 2024 in Oxford. See our conclusions here arxiv.org/abs/2501.05694arxiv.orgMyths around quantum computation before full fault tolerance: What no-go theorems rule out and what they don'tIn this perspective article, we revisit and critically evaluate prevailing viewpoints on the capabilities and limitations of near-term quantum computing and its potential transition toward fully fault... 15212
Marius Lemm @mariuslemm.bsky.social · 19/12/2024What is the propagation speed of Bose-Hubbard Hamiltonians when the initial state is a BEC? We now have an answer in the mean-field regime (with applications to effective dynamics) arxiv.org/abs/2412.13868 Thanks to my collaborators Simone Rademacher and Jingxuan Zhang!arxiv.orgLocal enhancement of the mean-field approximation for bosonsWe study the quantum many-body dynamics of a Bose-Einstein condensate (BEC) on the lattice in the mean-field regime. We derive a local enhancement of the mean-field approximation: At positive distance... 021
Marius Lemm @mariuslemm.bsky.social · 04/12/2024Two open positions in mathematical physics in Tübingen funded by ERC Starting Grant "MathQuantProp: The Mathematics of Quantum Propagation" Ph.D. position www.mathjobs.org/jobs/list/26... Postdoc position www.mathjobs.org/jobs/list/26... start: mid 2025 (flexible) deadline: January 15, 2025 022
Marius Lemm @mariuslemm.bsky.social · 02/12/2024New preprint with Tom Wessel: "Enhanced Lieb-Robinson bounds for commuting long-range interactions" arxiv.org/abs/2411.19241 We observe that the power-law decay exponent required for a linear light cone improves from 2D+1 to 1 if the interactions are commuting. (Here D=spatial dim.)arxiv.orgEnhanced Lieb-Robinson bounds for commuting long-range interactionsRecent works have revealed the intricate effect of long-range interactions on information transport in quantum many-body systems: In $D$ spatial dimensions, interactions decaying as a power-law $r^{-α... 021
Reposted by Marius LemmTimothy Gowers @wtgowers.bsky.social · 30/11/2024A few days ago Lawrence Hollom posted a preprint that solves a problem about posets, informally known as the fishbone conjecture, which I am told was extremely central in the area. 🧵 arxiv.org/abs/2411.16844arxiv.orgA resolution of the Aharoni-Korman conjectureA poset $P$ is said to satisfy the finite antichain condition, or FAC for short, if it has no infinite antichain. It was conjectured by Aharoni and Korman in 1992 that any FAC poset $P$ possesses a ch... 110827