@justincasher

Accelerating mathematics with AI Researcher @ Project Numina Organizer @ NYC Lean

 New York, NY
justinasher.me
Joined January 2025
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I am excited to announce that my search engine, LeanExplore, has been selected for funding by the AI for Math Fund from @RenPhilanthropy, with support from @xtxmarkets: renaissancephilanthropy.org/…

LeanExplore: Semantic Search Infrastructure for Lean 4 — Renaissance Philanthropy – A brighter...

renaissancephilanthropy.org
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We will additionally develop benchmarks and fine-tune models specifically for the types of queries that we receive. All models, benchmarks, and code will be open source.
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I will be building this at @ProjectNumina together with Pietro Pellegrino. Thank you to @RenPhilanthropy and @xtxmarkets for supporting this work. Try LeanExplore at leanexplore.com
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We will additionally develop benchmarks and fine-tune models specifically for the types of queries that we receive. All models, benchmarks, and code will be open source.
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The grant will be hosted at @ProjectNumina, where I will be building this with Pietro Pellegrino. Try LeanExplore at leanexplore.com
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We're delighted to announce the winners of this year’s grants from the AI for Math Fund, powered by founding donor @xtxmarkets: 22 winners, 30+ organizations, selected from 400+ applications across 50 countries. Backed by a record $17.1M from XTX Markets, bringing their total commitment to $35.1M. renaissancephilanthropy.org/… 1/2

Renaissance Philanthropy and XTX Markets Announce Further $17.1 Million to Accelerate Mathematical...

AI for Math Fund has now committed a total of $35.1 million.

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Many mathematicians and researchers (@wtgowers, @ChrSzegedy, @emilyriehl) have written about the interplay between AI and math. I wrote a short essay on why we are still underestimating how fast AI math is accelerating: justinasher.me/math-approach…

Math, accelerating toward light speed

AI is speeding up mathematical discovery, and soon mathematics will move faster than we can follow. We should prepare for and embrace a mathematics we no longer drive.

justinasher.me
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Justin Asher retweeted
Christian Szegedy
@ChrSzegedyOct 3
Reading all those recent beautiful essays by Terry Tao, Kevin Buzzard and @wtgowers, I could not resist, but write up my deeply personal perspective on how I perceive and see things: docs.google.com/document/d/e…
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Two years ago I argued we needed an autoformalizer. Now the time has come to formalize all of mathematics. We need to unite behind a single Mathematics Autoformalization Project that turns all known mathematics into one Lean library. @jdlichtman @patrickshafto
Jared Duker Lichtman
@jdlichtmanSep 8
We are poised to translate all known math into formal code.

The MAP: Mathematics Autoformalization Project

Article · @jdlichtman
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justinasher.me/formalize-eve…

Formalize everything, now!

Two years ago I argued that we needed an autoformalizer. Since then an industry has formed around the idea, and in September 2026 an AI system formalized Fermat's Last Theorem. Autoformalization now...

justinasher.me
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Justin Asher retweeted
Claire Wang@lambdaclaireAug 14
Prismriver, a Lean 4 music formalization library - talk at Lean NYC this sun (see lean.nyc), at FARM workshop at ICFP, and a free performance 8/24 evening at IU Indianapolis. we will be playing lean compositions! arxiv.org/abs/2606.19936
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I'm incredibly excited to announce the founding of the Mathematical AI safety Institute (MAISI) maisi.org/. AI safety needs more foundational theoretical development, and mathematicians have the skills and the mindset to help! MAISI is an independent institute with visiting positions ranging from 1 semester to 2 years. Our goal is to get mathematicians up to speed and working on research directions in AI safety as quickly as possible. There is important work to be done, and there is real progress to be made. YOU can help! Applications are open now! MAISI is aiming to hire 10-30 mathematicians to join us in the Bay Area by January, and scale up to 30-100 for September 2027. If you're a mathematician interested in channeling your skills toward the most important problem of our time, please apply today! maisi.org/apply

Mathematical AI Safety Institute

A mathematical research institute for AI safety.

maisi.org
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Jia Li
@JiaLi52524397Sep 8
We formalized the proof of the 3D Kakeya conjecture in Lean from the Sticky Kakeya theorem. Together with the unconditional Sticky Kakeya formalization by Nankai University × ByteDance Seed AI4Math, this gives a complete formal proof with no sorry and no project-specific mathematical axiom. A great example of how AI can help turn frontier mathematics into machine-verified proofs. github.com/project-numina/ka… github.com/M32026/3d-sticky-… projectnumina.ai/article?slu… @ProjectNumina @GanjinZero
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Project Numina
@ProjectNuminaJul 8
Excited to share our #ICML2026 poster on Numina-Lean-Agent, an open and agentic reasoning system for formal mathematics. If you are at @icmlconf and interested in formal mathematics, theorem proving, agentic systems, or #AIforScience, come visit our poster presented by @ahhwuhu Thursday, July 9 2026 2:30 PM – 4:15 PM Hall A We’d love to chat! #OpenSourceAI #AIagents #Lean4
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Greg Brockman
@gdbJul 10
50-year old math conjecture solved with Sol Ultra. Feels like the limit of what you can do is increasingly your ambition and imagination:
Ethan Knight
@__eknight__Jul 10
Yesterday, we made GPT-5.6 Sol Ultra generally available. Today, we're sharing that it produced a proof of the 50-year-old Cycle Double Cover Conjecture using 64 subagents in just under one hour. We're sharing the prompt and proof below. We're excited to see what you all do with Ultra!
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Amaury Hayat@Amaury_HayatMay 5
For the last few months, we’ve been building a proving agent with the Numina Project. Recently, it found a proof of a conjecture in control theory that I had attempted to prove while a PhD student, and that I had not managed to solve. It had remained open since then (1/15)
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