Sign in

Sariel Har-Peled

@sarielhp.bsky.social
146 followers 80 following 559 posts

A geometer in the corn fields. sarielhp.org

PostsRepliesMedia
Sariel Har-Peled @handle.invalid · 07/10/2026
Or didn't ask because it was hopeless...
000
Sariel Har-Peled @handle.invalid · 06/10/2026
Its not quadratic time. It is n^1.9992 time. Which is quadratic time for all values of n in this universe... Maybe it can be improved.
010
Sariel Har-Peled @handle.invalid · 02/10/2026
It did simplify things for the reviewers. So mission accomplished?
110
Sariel Har-Peled @handle.invalid · 27/09/2026
Faster processing would be my guess..
001
Sariel Har-Peled @handle.invalid · 19/09/2026
I believe the very strong secretary problem on inverted monoids is still open for the next 24 minutes if anyone is looking for a research problem.
070
Sariel Har-Peled @handle.invalid · 11/09/2026
Tired of LaTeX spewing 500 lines for a missed $? Meet latex_it: 🧹 Clean dirs: build junk stays in junk/ 🎯 Pinpoints exact line where unclosed { or $ began 🚨 Alerts: catches silent bugs (e.g. inverted labels) 🤷 Whatevers: hides sub-mm noise. sarielhp.github.io/latex_it/
sarielhp.github.io
latex_it
Fast, isolated, intelligent LaTeX compilation manager
021
Sariel Har-Peled @handle.invalid · 10/09/2026
I would like nitty-picky to be an official acceptable phrase in English. Thank you for your attention to this matter.
020
Sariel Har-Peled @handle.invalid · 09/09/2026
Well maybe not move it but definitely destroy it considering global warming.
030
Sariel Har-Peled @handle.invalid · 30/08/2026
Beware! Octagon ahead!!!
030
Sariel Har-Peled @handle.invalid · 26/08/2026
Congrats and hopefully less boring than the American ones.
110
Sariel Har-Peled @handle.invalid · 18/08/2026
I think double blind had been taken too far, when the package tracker refuses to tell you who sent the package, where it is, instead listing anonymous information along the lines "the package had left the hub <timestamp>, arrived at hub <timestamp>, ... arrived to destination country...
000
Sariel Har-Peled @handle.invalid · 17/08/2026
Help to check correctness and checking correctness are two different things. A pen can help checking correctness. Btw I do think thwt some automatic checks of writing quality would benefit everyone especially as the same tools can improve the writing...
000
Sariel Har-Peled @handle.invalid · 17/08/2026
As for correctness many papers are not verifiable since they just lack critical low leveel details. Any verification of papers requires resolving many such issues, which only the authors can do. The automatic lean proofs are not that automatic as far as i understand...
100
Sariel Har-Peled @handle.invalid · 17/08/2026
I dont advocate doing it but it is dramatically cheaper than what you are stating. Probably in the 20 cents range per paper if you use cheaper slightly weaker models. They wouldn't check correctness because we are not there yet anyway.
100
Sariel Har-Peled @handle.invalid · 15/08/2026
Outrageous. Such theft is only legal for publishers of academic journals.
031
Sariel Har-Peled @handle.invalid · 13/08/2026
Seems violent all this button pushing....
020
Sariel Har-Peled @handle.invalid · 06/08/2026
Upload dblp bib file? Use some cli llm tool?
110
Reposted by Sariel Har-Peled
Darth Putin @darthputinkgb.bsky.social · 06/08/2026
Wildberries is moving to a cloud delivery model.
461420196
Sariel Har-Peled @handle.invalid · 03/08/2026
This administration is a protection racket all the way down. I dont think there are any easy choices for university administration. In any case they needed only a few collaborators, real or imagined, so your statement is a bit too atrong.
100
Sariel Har-Peled @handle.invalid · 02/08/2026
A lot of people making public judgements about math, llms, etc would benefit today from remembering that it is very hard to predict. Especially the future.
070
Sariel Har-Peled @handle.invalid · 01/08/2026
Yeh.. I use gemini cli to maintain my Emacs setup (with github for version cobtrol). Pretty good. Gemini can definitely be a creep aometimes....
010
Sariel Har-Peled @handle.invalid · 23/07/2026
The failure of reality to follow the analysis of smoothed analysis suggest we need a new reality, not a new type of anslysis. As no new analysis would change the way lp solvers are used in practice.
130
Sariel Har-Peled @handle.invalid · 21/07/2026
Google has real income outside ai. But yeh the market might panic....
010
Sariel Har-Peled @handle.invalid · 21/07/2026
The trump administration to disallow Chinese companies to export advanced llm models to China...
010
Sariel Har-Peled @handle.invalid · 15/07/2026
Grunbaum's inequality states that for a convex, bounded body K in R^n, let c be its center of mass. Any halfspace containing c contains at least a 1/e fraction of the volume of K. Mind blown...
000
Sariel Har-Peled @handle.invalid · 15/07/2026
Updated chapter on the Brunn-Minkowski inequality and several interesting applications, including the isoparemeteric inequality and Grunbaum's inequality. sarielhp.org/book/chapter...
sarielhp.org
020
Reposted by Sariel Har-Peled
cs-cg-arxiv.bsky.social @cs-cg-arxiv.bsky.social · 14/07/2026
📚 New in arXiv cs.CG: How to Catch $k$ Grid Points
arxiv.org
How to Catch $k$ Grid Points
New paper in cs.CG (Computational Geometry)
001
Reposted by Sariel Har-Peled
cs-cg-arxiv.bsky.social @cs-cg-arxiv.bsky.social · 14/07/2026
📚 New in arXiv cs.CG: The Quick Dog Jumps the Log
arxiv.org
The Quick Dog Jumps the Log
New paper in cs.CG (Computational Geometry)
001
Sariel Har-Peled @handle.invalid · 14/07/2026
arxiv.org/abs/2607.09917
arxiv.org
The Quick Dog Jumps the Log
We give linear-time, and thus optimal, $(1+\varepsilon)$-approximation algorithms for numerous variants of the Frechet distance between $c$-packed curves (where $c \in O(1)$), removing an additional l...
010
Sariel Har-Peled @handle.invalid · 14/07/2026
arxiv.org/abs/2607.10824
arxiv.org
How to Catch $k$ Grid Points
Given a positive integer $k$, we study the problem of finding a convex polygon of minimum perimeter that encloses exactly $k$ points of $\mathbf{Z}^2$. We show that an optimal polygon is contained in ...
000
Sariel Har-Peled @handle.invalid · 22/06/2026
000
Sariel Har-Peled @handle.invalid · 22/06/2026
Huh? First, empty the agency by firing everybody you can. Make it impossible to run, then put some random people in charge that makes random decisions, then watch as the agency effectively collapse and does not spend the money it is allocated. Not exactly a new playbook with this administration...
100
Sariel Har-Peled @handle.invalid · 17/06/2026
I wouldn't worry - we can replace these students with LLMs...
220
Sariel Har-Peled @handle.invalid · 14/06/2026
Emergency call for help where your car sends your location so somebody can come and help you. Good intentions...
120
Sariel Har-Peled @handle.invalid · 13/06/2026
All cars started having it in 2018 because of European car regulations. Some cars had it earlier.
110
Sariel Har-Peled @handle.invalid · 13/06/2026
Your car is spying on you, and sends the data [location, acceleration, etc] (potentially every few seconds) using its built-in SIMs. True of all new cars starting in 2018. www.bbc.com/future/artic...
bbc.com
Trillions of miles of data: Your car is spying on you, and it's only just the beginning
From your weight and facial expressions to your destination, cars collect a startling amount of data about you. Some of it may even raise your insurance costs.
156
Sariel Har-Peled @handle.invalid · 13/06/2026
You. Just need to find a COMPLETE joke, and then do conditional reductions of the form if X is funny then Y is funny.
020
Sariel Har-Peled @handle.invalid · 11/06/2026
There is enough glory for everyone. If you worry about authors citation credit in the text, you are wasting energy (and other people's energy) on the wrong thing. I am also annoyed by this micro-management - let people write what people want to write...
000
Sariel Har-Peled @handle.invalid · 10/06/2026
SODA 2027 CFP (www.siam.org/conferences-...) absurdly encourages using a citation style (to avoid using etal) that is in contradiction to *all* writing manuals: sarielhp.org/misc/blog/26... .
siam.org
SODA27 Submissions | SIAM
Submissions for ACM-SIAM Symposium on Discrete Algorithms (SODA27)
110
Sariel Har-Peled @handle.invalid · 07/06/2026
A lot of conspiracy theories....
000
Sariel Har-Peled @handle.invalid · 07/06/2026
There was quite a bit of info in the Snowden leak about the usa spying on Israel. I mentioned rhe Liberty incident because it was interesting not as a proof....
000
Sariel Har-Peled @handle.invalid · 06/06/2026
The Liberty incident is quite interesting if you never heard of it... en.wikipedia.org/wiki/USS_Lib...
en.wikipedia.org
USS Liberty incident - Wikipedia
240
Sariel Har-Peled @handle.invalid · 06/06/2026
Usa has long history of spying on Israel. The idea that this is one sided is hilarious.
220
Sariel Har-Peled @handle.invalid · 04/06/2026
The venue is going to be extremeLLMy selective...
020
Sariel Har-Peled @handle.invalid · 03/06/2026
I imagine a fully streamlined Neuroips conference, unhindered by humanity's faults, where papers are written by LLMs, reviewed by LLMs, the presentations are prepared and presented by LLMs, and attended only by LLMs. Such a conference could be scaled to handle billions of submissions...
381
Sariel Har-Peled @handle.invalid · 03/06/2026
Behold the new avatar... bsky.app/profile/cs-c...
bsky.app
010
Sariel Har-Peled @handle.invalid · 31/05/2026
The dinosaurs did not have a say if they get wiped out. We also would be wiped out if such an asteroid hits earth again. Also it was not not a meteor...
000
Sariel Har-Peled @handle.invalid · 29/05/2026
Go tell it to cities in europe....
000
Sariel Har-Peled @handle.invalid · 29/05/2026
Hmm. Kurt Vonnegut said that the only reason to use a semicolon is "to show you've been to college." And the only reason to use em---deshes it to show you are using AI tools or similar tools for your writing, as they went to college for you and paid attention in class...
010
Sariel Har-Peled @handle.invalid · 29/05/2026
I installed not ai based grammar checker and it complains about this. It informed me all my dashes are wrong and belong to us... I assume they just use similar thing in their training.
110