@sarielhp.bsky.social - Sariel Har-Peled

11 Sep 2026 20:19 +0000

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/ https://sarielhp.github.io/latex_it/

10 Sep 2026 15:38 +0000

I would like nitty-picky to be an official acceptable phrase in English. Thank you for your attention to this matter.

30 Aug 2026 00:23 +0000

Beware! Octagon ahead!!!

18 Aug 2026 20:22 +0000

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 , arrived at hub , ... arrived to destination country...

15 Aug 2026 00:47 +0000

Outrageous. Such theft is only legal for publishers of academic journals. [contains quote post or other embedded content]

02 Aug 2026 01:16 +0000

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.

23 Jul 2026 10:10 +0000

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. [contains quote post or other embedded content]

21 Jul 2026 03:03 +0000

The trump administration to disallow Chinese companies to export advanced llm models to China...

15 Jul 2026 22:51 +0000

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... [contains quote post or other embedded content]

15 Jul 2026 20:19 +0000

Updated chapter on the Brunn-Minkowski inequality and several interesting applications, including the isoparemeteric inequality and Grunbaum's inequality. https://sarielhp.org/book/chapters/bm_inequality.pdf

14 Jul 2026 04:07 +0000

arxiv.org/abs/2607.09917 https://arxiv.org/abs/2607.09917

14 Jul 2026 04:07 +0000

arxiv.org/abs/2607.10824 https://arxiv.org/abs/2607.10824

13 Jun 2026 21:20 +0000

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. https://www.bbc.com/future/article/20260513-your-car-is-spying-on-you-its-about-to-get-worse

10 Jun 2026 10:04 +0000

SODA 2027 CFP (https://www.siam.org/conferences-events/siam-conferences/soda27/submissions/) absurdly encourages using a citation style (to avoid using etal) that is in contradiction to *all* writing manuals: http://sarielhp.org/misc/blog/26/06/10/et_al.md .

03 Jun 2026 20:33 +0000

Behold the new avatar... https://bsky.app/profile/cs-cg-arxiv.bsky.social

29 May 2026 20:33 +0000

Go tell it to cities in europe.... [contains quote post or other embedded content]

21 May 2026 14:24 +0000

OpenAI is doing an IPO and their technology is impressive. But is it useful? I still have serious doubts about their long term viability compared to say google. I am also wondering if small models might be able to do most targeted tasks equally well, undercutting the whole craze for data centers. [contains quote post or other embedded content]

21 May 2026 04:12 +0000

Mathematicians rank the hardness of a problem, and thus its importance, by how long it was open and how many people tried to solve it. Its a very strange norm if you think about it.... [contains quote post or other embedded content]

20 May 2026 20:58 +0000

Wow. That is big. [contains quote post or other embedded content]

14 May 2026 16:01 +0000

Assume you have a discrete distribution, with i having probability p_i, for i=1,..., n, and you have access to a uniform distribution (say on [0,1]). How do you sample from this distribution in constant time? A: The alias method... http://sarielhp.org/misc/blog/26/05/14/alias_method.pdf

11 May 2026 09:04 +0000

Wordle like game, but for arbitrary long words: https://sarielhp.org/misc/blog/26/05/10/

01 May 2026 22:13 +0000

There are two computers connected by two wires to each other (via two ports). For example, A1<->B1 and A2<->B2 means that port 1 of A and B are connected by a wire, as well as port 2 of both computers. Alternatively, A1<->B2 and A2<->B1. The two computers are perfectly synchronized.

29 Apr 2026 15:51 +0000

Gemini suggested "Declarative Programmer" as a title for somebody who just programs using Gemini (it is really possible using gemini-cli nowadays). Other suggestions are "Declarative Programmer" and "Gemineer".