Deyan Ginev

Deyan Ginev

@dginev.bsky.social

Software Engineer at arXiv. LaTeXML dev. The Web was created to share science. Let's keep it that way. creator of http://ar5iv.org

363 Followers 407 Following 305 Posts Joined Aug 2023
20 hours ago
Company Lacks Manpower To Complete Newest Round Of Layoffs

Company Lacks Manpower To Complete Newest Round Of Layoffs https://theonion.com/company-lacks-manpower-to-complete-newest-round-of-layo-1819574660/

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18 hours ago

Rust is a good language for LLMs not because it codes in it the best (that goes to typescript or python) but because it eliminates certian classes of errors and forces more correctness at compile time. "Rewrite it in rust" becomes a weekend project not an unclimbable mountain

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1 day ago

RustWeek really makes it sound very salacious

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22 hours ago
Resolution on Scientific Publishing and MIT Libraries.pdf

MIT graduate student council "calls for adoption of preprints...to
accelerate communication of scientific discoveries, and restore healthy incentives" drive.google.com/file/d/1KLbj...

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1 day ago
Reasoning Theater: Disentangling Model Beliefs from Chain-of-Thought

arxiv.org/html/2603.05...

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1 day ago

I expect to see "Claude walker" hiring ads soon.

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2 days ago
Preview
When Using AI Leads to “Brain Fry” As firms increasingly incentivize employees to build and oversee complex teams of agents—for example, by measuring and rewarding token consumption as a proxy for performance—people are finding themsel...

You get used to it, but it was a shock to the system at first.

“I end each day exhausted—not from the work itself, but from the managing of the work. Six worktrees open, four half-written features, two ‘quick fixes’ that spawned rabbit holes, and a growing sense that I’m losing the plot entirely.”

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1 week ago
ads-bib-tools: Fetch Your Full Publication List from NASA ADS – Home ORCID-based bibliography management for Quarto and static sites

Released ads-bib-tools: fetch your full publication list from NASA ADS by ORCID, clean up MathML in
titles, and tag refereed/non-refereed entries. One command to a website-ready .bib file.

Works great with Quarto for academic homepages.

michaelaye.github.io/posts/ads-bi...

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4 days ago
YouTube
Typst Meetup 2026: Keynote YouTube video by Typst

The first talk of our meetup is live now: In the keynote, we tell-all about our journey from scrappy upstarts to a professional open source project.

New uploads every weekday (Mo-Fri) at 17:00 UTC on YouTube. Subscribe so you don't miss the 10 talks!

www.youtube.com/watch?v=WOQX...

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4 days ago

🗓️ The February 2026 arXiv articles are now in ar5iv.

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6 days ago

If you really want people to read what you wrote, you will give it away for free, like a Jehova Witness that is handing out bibles.

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1 week ago
Preview
GitHub - lab-cosmo/upet: Universal interatomic potentials for advanced materials modeling Universal interatomic potentials for advanced materials modeling - lab-cosmo/upet

Now, this is just a milestone on that path, but it's already something worth sharing, so thanks to arXiv you can read about it arxiv.org/html/2603.02..., and thanks to uPET github.com/lab-cosmo/up... and metatomic, you can try already a universal MLIP trained on it.

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1 week ago
Net and Prune: A Linear Time Algorithm for Euclidean Distance Problems1footnote 11footnote 1Work on this paper was partially supported by NSF AF awards CCF-0915984 and CCF-1217462. The full updated ve...

A while back, we realized that one can (1+ε)-approximate the Hausdorff distance between point sets in ℝ^d, in linear time. Unfortunately, this was already done implicitly in a remark in a published old paper. So, we updated the arXiv version:
arxiv.org/html/1409.74...

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1 week ago

13 years ago, Aaron Swartz came to visit the Internet Archive during his case. I had time with him, got a picture with him, told him that if they were stupid enough to send him to candy jail he'd become a folk hero and he could write a book that would change the world. He said he appreciated it.

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1 week ago

I need an AGENT.md file automating step 3

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1 week ago

I see the shortcut, but where's the final monetization coming from?

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1 week ago
The arXiv of the future will not look like the arXiv

🌷Spring cleaning for arXiv's HTML Papers

1️⃣ The header on new articles is now collapsible and a bit more compact on mobile.

2️⃣ We've also moved the warnings and caveats out of the way, in favor of focused reading.

Let us know what you think? #arXiv

arxiv.org/html/1709.07...

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1 week ago
Preview
TeX Live 2026 released | There and back again Get the Champagne ready, we have released the final images of TeX Live 2026. Nothing spectacularly new in this version, but improvements across that bank, and a new player: `xdvipsk`, an extended dvip...

TeX Live 2026 is released - mirror updates are running! #TeXlive www.preining.info/blog/2026/03...

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1 week ago
A picture of Joe Halpern smiling in green shirt in front of a blue background.

Today arXiv remembers our colleague Joe Halpern, who was instrumental in founding arXiv's CS section.

Joe's passions ranged far & wide and we're lucky that arXiv was one of them. Joe, thank you for giving so much to arXiv - you are missed.

blog.arxiv.org/2026/02/27/remembering-joe-halpern

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1 week ago

If you find pieces of open infrastructure valuable - especially fledgling ones - remember to voice your support in forums that matter.

And send kudos to their maintainers when you can. A couple of encouraging words can make a real difference.

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1 week ago
Post image

We're looking for a Senior Software Developer (frontend) to join Crossref.

Remote, full-time.

Deadline: March 10, 2026. https://www.crossref.org/jobs/2026-02-17-senior-software-developer-frontend

#jobs #hiring #remote #remotework

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1 week ago
Attention Authors: Updates for .bib file processing and TeX in arXiv submissions – arXiv blog

Swinging by to happily note upgrades landed in both tracks, as everyone was hoping. Here's the Nov blog post that announced xelatex support:

blog.arxiv.org/2025/11/05/a...

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2 weeks ago
Preview
Nanoscience is latest discipline to embrace large-scale replication efforts A European project calls for help to verify whether carbon quantum dots are really able to sense chemicals in cells.

Wonderful to see this replication effort in the physical sciences using the models of many labs, preregistration, and transparency that have benefitted other fields.

And, an investment of $9.5 million to do it!

www.nature.com/articles/d41...

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2 weeks ago
Preview
No shortcuts to research information citizenship - Digital Science Being open isn't enough - true "research information citizenship" requires a robust, genuinely open research infrastructure.

"For open infrastructure, the burden of AI harvesting is existential...a swarm of AI scrapers mirror entire collections, the cost of being open rises sharply...degraded performance for legitimate users, polluted metrics, staff time diverted to firefighting" www.digital-science.com/blog/2026/02...

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2 weeks ago

Eminem's still faster.

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2 weeks ago

Especially science. It's so sad to be publishing so many papers that you're too busy to do science.

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2 weeks ago
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3 weeks ago
Cornell University, Computer Science Job #AJO31698, Lecturer/Senior Lecturer, Computer Science, Cornell University, New York, New York, US

Care about preparing people to contribute responsibly to building the next generation of AI and technology?

Full-time (or at least 50%) lecturer position at Cornell Tech just posted, teaching computer science or related topics.

academicjobsonline.org/ajo/jobs/31698

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2 weeks ago
We want to evaluate
$$
\sum_{\color{red}k=0}^\infty (\color{red}k+1) \color{blue}p^{\color{red}k}\,.
$$
Introduce the function $f$, for $|\color{blue}x|<1$:
$$
f(\color{blue}x) = \sum_{\color{red}k=0}^\infty \color{blue}x^{\color{red}k}\,.
$$
That's a nice geometric series, and we easily get $f(\color{blue}x) = \frac{1}{1-\color{blue}x}$. So we can differentiate that:
$$
f'(\color{blue}x) = \frac{1}{(1-\color{blue}x)^2} 
$$
But $f$ was defined as a power series, and we can also differentiate *that* termwise:
$$
f'(\color{blue}x) = \sum_{\color{red}k=1}^\infty \color{red}k \color{blue}x^{\color{red}{k-1}} = \sum_{\color{red}k=0}^\infty {(\color{red}k+1)} \color{blue}x^{\color{red}{k}}\,.
$$
Well, $f'(\color{blue}x)= f'(\color{blue}x)$ (!), so we can use both expressions, and evaluate them at $\color{blue}p$:
$$
\boxed{\sum_{\color{red}k=0}^\infty {(\color{red}k+1)} \color{blue}p^{\color{red}{k}}
= \frac{1}{(1-\color{blue}p)^2}}
$$

Let's say you want, e.g., to compute the expectation of a Geometric r.v. That'll involve, at some point, evaluating a series of the form "Σ (k+1) p^k" which looks like what Lovecraft may have done to a geometric series. How to do it?

One trick I enjoy: differentiate the same function, in two ways!

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3 weeks ago

any sufficiently advanced technology is indistinguishable from language

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