@antoniolupetti - j. marshall pittman

# @antoniolupetti — X profile Related: [[Users/@antoniolupetti/Post Analyses/Post Analysis - antoniolupetti on Start Doing Graph Theory (2026-10-23)|post analysis: Start Doing Graph Theory]] · [[Users/@antoniolupetti/Chronological List|chronological list]] · [[Users/@antoniolupetti/Topical List|topical list]] · [[Topics/Online Tools and Resources/Online Tools and Resources|Online Tools and Resources]] · [[X Research]] ## Identity - **Name:** Antonio Lupetti, Rome. Joined X on Mar 9, 2018. Not verified. - **Bio:** "Founder of Algebrica. Building a free and open mathematical knowledge base. Working on my debut novel. Math / AI / DL / NLP". His profile link goes to algebrica.org. - **Background (his own account ⚠️).** His [Algebrica author page](https://algebrica.org/antonio-lupetti/) calls him an "Italian computer engineer, writer, and independent publisher". It says he has run publishing projects since 2007, worked at "a leading global consulting firm" and then in management at "a major company operating in the aeronautical sector", and sat on the Awwwards jury. It doesn't name either employer. His about.me says he studied computer engineering at Sapienza in Rome. - **Earlier blogging (independent source).** [Wired Italia's "Under 35" list](https://www.wired.it/attualita/2014/06/28/wired-35-antonio-lupetti/) (Jun 28, 2014) named him an influencer, aged 34. It says he started the English web-design blog Woork Up, switched it to an Italian general-interest blog, and later turned it into Reezer.com. He then had 103K Twitter followers, so he had an earlier, larger audience on a different account ⚠️ (which handle isn't confirmed here). - **Algebrica.** Algebrica (algebrica.org) is a free, ad-free maths knowledge base with no registration. Its content is on GitHub ([antoniolupetti/algebrica](https://github.com/antoniolupetti/algebrica), about 840 stars) in Markdown and LaTeX. His Oct 11 post says he launched it in May 2023; one search snippet says October 2023 ⚠️. The site runs on donations: a [Founding Supporters](https://algebrica.org/founding-supporters/) page sells "boxes" that put a donor's name and link on the site for the length of a campaign. The page says "the site earns nothing from the traffic it receives". No ads or affiliate links were seen. ## Stats Read Oct 24, 2026, about 11:13 PM CT. | Followers | Following | Posts | Listed | Media | Likes given | |---:|---:|---:|---:|---:|---:| | 14,727 | 64 | 1,776 | 135 | 419 | 2,574 | ## Main themes 49 posts from Sep 26 to Oct 24, 2026: 41 top-level posts and 8 replies. He posts almost every day, always in the same format: *"'Title' is a free … textbook / set of lecture notes that …"*, followed by a summary of what it covers and a link. See the [[Users/@antoniolupetti/Topical List|topical list]]. - **Free math textbooks and lecture notes (18).** Examples: Strang's *Calculus*, Judson, Hammack's *Book of Proof*, Grinstead & Snell, Trench, Connell, Burris & Sankappanavar, Grinberg, Bondy & Murty's *Graph Theory with Applications* (Oct 9) and Lavrov's *Start Doing Graph Theory* (Oct 23). One is Spivak's *Calculus*, a commercial book; the collected text doesn't call it free. - **AI, machine learning and CS papers and books (13).** Examples: *Mathematical Theory of the Transformer*, MIT's *Matrix Calculus* and deep-learning notes, Stanford's *Speech and Language Processing* (posted twice) and *Applied Cryptography*, Lilian Weng on scaling laws, an Apple paper on looped transformers, and the PageRank linear-algebra paper. - **Algebrica entries, updates and promotion (14).** Examples: entries on De Morgan's laws and L'Hôpital, monthly traffic updates, plugs for the Algebrica bibliography (200+ titles), and a donation appeal ("help me keep it free, open, and ad-free"). - **Personal (4).** A 100,000-word draft of his first novel, notebooks, and a switch to the Galaxy Fold 8. ## Collected posts highlights | Date (CT, 2026) | Post | Note | |---|---|---| | Oct 13, 11:28 AM | [Strang, *Calculus* (MIT)](https://x.com/antoniolupetti/status/2110044935831331063) | 73,151 impressions, 1,980 likes: most viewed in the sample | | Oct 20, 4:20 AM | [*Mathematical Theory of the Transformer*](https://x.com/antoniolupetti/status/2112473962978410680) | 71,800 impressions, 1,723 likes | | Oct 11, 8:38 AM | [Algebrica traffic update](https://x.com/antoniolupetti/status/2109277546650943877) | "October page view estimates for Algebrica suggest that monthly traffic could reach 600,000, up from the previous record of around 430,000 in August." Self-reported ⚠️ | | Sep 26, 10:29 AM | [Foldables and supporter appeal](https://x.com/antoniolupetti/status/2103869451930132713) | "If you enjoy Algebrica and want to help me keep it free, open, and ad-free for everyone, two permanent badges are still available for the October campaign in the Founding Supporters section." | | Oct 23, 7:51 AM | [*Start Doing Graph Theory*](https://x.com/antoniolupetti/status/2113614352548757628) | [[Users/@antoniolupetti/Post Analyses/Post Analysis - antoniolupetti on Start Doing Graph Theory (2026-10-23)\|analyzed]] ✅. 23,207 impressions, 925 likes, 876 bookmarks | Most of his resource posts get 4,000–40,000 impressions. Personal and Algebrica-update posts get under 2,000. ## Interactions with [[marshallpittman]] None found, in either direction. - **Searches.** Two full-archive searches came back empty. They covered his posts mentioning or replying to @marshallpittman, Marshall's posts mentioning or replying to him, retweets each way, Marshall's posts linking vertex.degree or algebrica.org, and Marshall's posts on "graph theory". - **Reactions to the analyzed post.** @marshallpittman isn't among the 23 thread items, the 7 quote posts, or the 98 of 115 reposters the API returned. - **Likes** couldn't be checked. ## Assessment A real, named curator who links to the authors' own free copies. He doesn't use affiliate links, but he posts on X to drive traffic to his own donation-funded Algebrica site. His summaries are usually accurate and fair to the source, though written as promotion ("Definitely worth adding to your mathematics library"). He often leaves out the author's name. He doesn't take part in his threads beyond emoji replies. The posts are trustworthy as pointers to free resources. Check whether each title is really free (the Spivak post isn't presented as free) and credit the authors yourself. His claims about his career and his site's traffic are self-reported ⚠️. ## In this folder   *No notes in this folder are published yet.*