You Can Backprop Anything You Want. It's Just The Chain Rule. Jacobians Don't Care What Kind Of Algebraic Bullshit You're Jamming Into Them.
March 13, 2026 at 6:21 PM
You Can Backprop Anything You Want. It's Just The Chain Rule. Jacobians Don't Care What Kind Of Algebraic Bullshit You're Jamming Into Them.
those are both prerequisites for Everything Is Jacobians
March 25, 2026 at 1:38 AM
those are both prerequisites for Everything Is Jacobians
Derivatives, Gradients, Jacobians and Hessians – Oh My!
New mathy blog post to try and make some scary sounding terms less scary.
blog.demofox.org/2025/08/16/d...
New mathy blog post to try and make some scary sounding terms less scary.
blog.demofox.org/2025/08/16/d...
August 17, 2025 at 4:33 AM
Derivatives, Gradients, Jacobians and Hessians – Oh My!
New mathy blog post to try and make some scary sounding terms less scary.
blog.demofox.org/2025/08/16/d...
New mathy blog post to try and make some scary sounding terms less scary.
blog.demofox.org/2025/08/16/d...
Yo dawg, we heard you like Jacobians, so we took the Jacobian of the model, so you can watch it think “Jacobian” while takes down the Jacobian conjecture.
Looks legit, heres the lean proof from someone else. github.com/deancureton/...
July 20, 2026 at 11:48 AM
Yo dawg, we heard you like Jacobians, so we took the Jacobian of the model, so you can watch it think “Jacobian” while takes down the Jacobian conjecture.
definitely a good time to be shorting Jacobians this week
July 21, 2026 at 7:08 PM
definitely a good time to be shorting Jacobians this week
Given all the discussions about Laplace and Jacobians at StanCon, reminder also about my case study with simple visual illustrations users.aalto.fi/~ave/casestu...
August 21, 2026 at 2:18 PM
Given all the discussions about Laplace and Jacobians at StanCon, reminder also about my case study with simple visual illustrations users.aalto.fi/~ave/casestu...
I could easily see you running the Jacobians And Movements lab.
August 24, 2025 at 1:56 PM
I could easily see you running the Jacobians And Movements lab.
The "Jacobians" are in the streets! 🤡
May 14, 2026 at 3:13 AM
The "Jacobians" are in the streets! 🤡
You think Jacobian and Hessian matrices are prohibitively expensive to compute on your problem? Our latest preprint with @gdalle.bsky.social might change your mind!
arxiv.org/abs/2501.17737
🧵1/8
arxiv.org/abs/2501.17737
🧵1/8
January 30, 2025 at 2:32 PM
You think Jacobian and Hessian matrices are prohibitively expensive to compute on your problem? Our latest preprint with @gdalle.bsky.social might change your mind!
arxiv.org/abs/2501.17737
🧵1/8
arxiv.org/abs/2501.17737
🧵1/8
Bertrand Toen: GENERALIZED LOCAL JACOBIANS AND COMMUTATIVE GROUP STACKS https://hal.science/hal-05760320v1 [math.math-ag]
September 24, 2026 at 3:00 AM
Bertrand Toen: GENERALIZED LOCAL JACOBIANS AND COMMUTATIVE GROUP STACKS https://hal.science/hal-05760320v1 [math.math-ag]
Self-acronyms are fun. Wish I could be the JAM lab (Jacobians And Math lab)
August 24, 2025 at 12:22 PM
Self-acronyms are fun. Wish I could be the JAM lab (Jacobians And Math lab)
Or maybe it's for less turgid Jacobians.
March 27, 2026 at 2:36 AM
Or maybe it's for less turgid Jacobians.
Proposing an analytic representation of sequence-space Jacobians in heterogeneous agent models in continuous time, which leads to a threefold speed gain, from Adrien Bilal and Shlok Goyal https://www.nber.org/papers/w33525
March 7, 2025 at 4:00 PM
Proposing an analytic representation of sequence-space Jacobians in heterogeneous agent models in continuous time, which leads to a threefold speed gain, from Adrien Bilal and Shlok Goyal https://www.nber.org/papers/w33525
The conjecture itself? Probably not, but Jacobians in general are used all day everyday in machine learning and quantitative finance.
July 21, 2026 at 12:35 AM
The conjecture itself? Probably not, but Jacobians in general are used all day everyday in machine learning and quantitative finance.
Implemented (with a lot of help) balance heuristic for ReSTIR GI spatial resampling. Spent so long fighting NaNs - turns out it was due to an unclamped dot product 🙃.
Balance heuristic helps a _ton_ though! Greatly reduces jacobian correlations, way more than rejecting jacobians does.
Balance heuristic helps a _ton_ though! Greatly reduces jacobian correlations, way more than rejecting jacobians does.
July 25, 2025 at 2:29 AM
Implemented (with a lot of help) balance heuristic for ReSTIR GI spatial resampling. Spent so long fighting NaNs - turns out it was due to an unclamped dot product 🙃.
Balance heuristic helps a _ton_ though! Greatly reduces jacobian correlations, way more than rejecting jacobians does.
Balance heuristic helps a _ton_ though! Greatly reduces jacobian correlations, way more than rejecting jacobians does.
I’ll take it. I’m sure I won’t understand it, but I’ll look at it. Are there any Jacobians or Hamiltonian tensors involved?
April 29, 2025 at 3:54 AM
I’ll take it. I’m sure I won’t understand it, but I’ll look at it. Are there any Jacobians or Hamiltonian tensors involved?
“Jacobians and Other Scary Math Words: An Alphabet Book” would be a big hit with children of engineering majors
January 14, 2025 at 10:54 AM
“Jacobians and Other Scary Math Words: An Alphabet Book” would be a big hit with children of engineering majors
6/🎯 In rigorous tests, JacobianODEs accurately predicted dynamics and outperformed NeuralODEs on Jacobian estimation, even in noisy, high-dimensional chaotic systems. Accurate control starts with accurate Jacobians, so this was an important check.
Now what can we do with it?👇
Now what can we do with it?👇
November 26, 2025 at 7:32 PM
6/🎯 In rigorous tests, JacobianODEs accurately predicted dynamics and outperformed NeuralODEs on Jacobian estimation, even in noisy, high-dimensional chaotic systems. Accurate control starts with accurate Jacobians, so this was an important check.
Now what can we do with it?👇
Now what can we do with it?👇
basically "there is a chain of Jacobians which you can calculate which lead to a uniform perturbation of a statistical operation which sums all of the values to one."
March 13, 2026 at 5:53 PM
basically "there is a chain of Jacobians which you can calculate which lead to a uniform perturbation of a statistical operation which sums all of the values to one."
Triumph of the Guillotine in Hell (1795) is a very weird allegorical painting by Nicolas-Antoine Taunay. I wouldn't call it sympathetic to revolutionary violence, but would also note that the Jacobians invading hell in it are executing demons. The penalties of misrule I guess?
January 25, 2026 at 10:05 AM
Triumph of the Guillotine in Hell (1795) is a very weird allegorical painting by Nicolas-Antoine Taunay. I wouldn't call it sympathetic to revolutionary violence, but would also note that the Jacobians invading hell in it are executing demons. The penalties of misrule I guess?
A guy who chooses to go by "jacobian" running a "Genocide denier" I legitimately hilarious.
Like my dude what happened to the french Jacobians after the revolution?
Like my dude what happened to the french Jacobians after the revolution?
June 6, 2025 at 5:50 PM
A guy who chooses to go by "jacobian" running a "Genocide denier" I legitimately hilarious.
Like my dude what happened to the french Jacobians after the revolution?
Like my dude what happened to the french Jacobians after the revolution?