- Renders: stacks.math.columbia.edu/. HTML is one tiny section per page, making it unreadable.
- LaTeX source: github.com/stacks/stacks-project
The book is very dry, extremelly boring unfortunately. Definition and theorem only for the most part.
He got so old from 2012 to 2021 :-)
This dude did well. If only he had written a hyperlinked wiki rather than making videos! It would allow people to jump in at any point and just click back. It would be Godlike.
mathdoctorbob.org/About.html says:
Robert Donley received his doctorate in Mathematics from Stony Brook University and has over two decades of teaching experience at the high school, undergraduate, and graduate levels.
This is what society gets for not using open knowledge: some of its best minds will be bound to waste endless hours reversing some useless technology.
With that said, even when you do have the source code, reading run logs and using debuggers are a sort of reverse engineering at heart.
One of the most jaw dropping reverse engineering projects Ciro has ever seen is the Super Mario 64 reverse engineering project.
The algorithm is completely analogous to Diffie-Hellman key exchange in that you efficiently raise a number to a power times and send the result over while keeping as private key.
The only difference is that a different group is used: instead of using the cyclic group, we use the elliptic curve group of an elliptic curve over a finite field.
Elliptic curves by Computerphile (2018)
Source. youtu.be/NF1pwjL9-DE?t=143 shows the continuous group well, but then fails to explain the discrete part.Variant of Diffie-Hellman key exchange based on elliptic curve cryptography.
Find MAC address of a device on the other end of an Ethernet cable by 
Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16The CIA really likes this registrar, e.g.:
- CIA 2010 covert communication websites
- 2014 www.newsweek.com/former-cia-officials-ready-defend-agency-after-torture-reports-release-290383A group of former CIA officials are gearing up to defend the agency when the Senate releases its long-awaited report investigating "enhanced interrogation" tactics used on prisoners after 9/11. The highlight of their PR push will be a website, "CIASAVEDLIVES.COM," which is set to go live when the report is released on Tuesday, Foreign Policy reported.
The guy who coded the initial version of BackRub, the first version of Google Search, but left before the company formed. TODO how did he meet Largey Brage? Why did he leave Google?
In 1997 he cofounded eGroups, a mailing list management website, together with the mysterious Carl Victor Page, Jr., Larry Page's older brother. eGroups was sold to Yahoo! in 2000 for $432m, just before the Dot-com bubble burst.
As of 2021 his net worth was of "only" $1b, even though his original Google shares would have been worth $13b. He must have sold too much too early to do other cool stuff. archive.ph/IgkMI:Did Largey give him this nice deal as a way to thank him for helping start the company, or was it just that they had no big hopes and $800 seemed right? youtu.be/pmXDtTD6vQY?t=146 suggests the stocks were part of his compensation for 3 months of coding work. Also mentioned at: nypost.com/2021/08/20/google-founder-created-revenge-site-against-estranged-wife
When Mr. Page and Mr. Brin founded Google in 1998, Mr. Hassan bought 160,000 shares for $800. When Google went public in 2004, the shares were worth more than $200 million. The shares, now in Google’s parent company, Alphabet, would be valued at more than $13 billion today [2021].
In 2001, Scott married a Vietnamese chick called Allison Huynh from university and they had three children.
In 2004 he tried strike a $20 million[ref] post-nuptial after Google went public, which she declined, so things were already crappy back then.
Then, during the divorce, Scott even created a revenge website for her as well. He's so petty! Down as of 2024 of course. There are only some weird redirect archives now: web.archive.org/web/20210915000000*/https://allisonhuynh.com redirecting to sites.google.com/view/allisonhuynhcom
The divorce is covered in several major outlets:
- www.dailymail.co.uk/news/article-9912929/Billionaire-investor-helped-launch-Google-accused-divorce-terrorism-bitter-break-up.html
- www.nytimes.com/2021/08/20/technology/Scott-Hassan-Allison-Huynh-divorce.html
- www.cnbctv18.com/technology/who-is-scott-hassan-the-google-founder-accused-of-divorce-terrorism-10543641.htm
- www.forbes.com/sites/jilliandonfro/2020/02/28/suitable-technologies-bankruptcy-filing-scott-hassan-allison-huynh/
To be fair, he did work on a lot of cool stuff after BackRub for which he deserves credit, not the least the company that created the Robot Operating System, which is a cool sounding open source project, which is awesome. But this divorce story is so damning! He should just own up to it, split the cash, and move on... The fact that the Google money came from an investment before marriage likely complicates things.
The fact that he does not have a Wikipedia page as of 2022 is mind blowing, especially after divorce details. Maybe Ciro Santilli will create it one day. Just no patience now. OK, done it June 2022: en.wikipedia.org/wiki/Scott_Hassan let's see if it lasts. The page lasted but ended up being Ciro Santilli's first edit war, how exciting:
- December 2022: an anonymous user with IP from California removed divorce details and google share ownership details, both of which had a New York Times source: www.nytimes.com/2021/08/20/technology/Scott-Hassan-Allison-Huynh-divorce.html. Discussion at: en.wikipedia.org/wiki/Talk:Scott_Hassan#Divorce_details_removed_as_%22poorly_sourced_material%22_by_anonymous_user_even_though_they_had_a_source_from_the_New_York_Times It feels exactly like the type of thing Scott would have done himself. And he possibly inadvertently exposed his real IP in doing so: 24.6.226.102. It is pingable, but Nmap analysis shows nothing of interest.
- June 2024: another partial revert removing the juicy divorce details by user named "ReversingWrongs". The username choice so incredibly cute and naive it makes Ciro wonder if this is from some woman that loves him (mother, child, new partner?) rather than just a Hassan sockpuppet. OK, perhaps with en.wikipedia.org/wiki/Wikipedia:Biographies_of_living_persons#People_who_are_relatively_unknown the divorce has to be left out? It's always impossible to decide with those wikipedia things. What you can say, is not necessarily what people want to read about, even when it is incredibly well source.
Looking a the history, he just kept revealing different IPs and continuously reverting, which other people put back in. Another of his IPs:There is also an interesting edit from 2600:1700:5470:5c50:7566:9580:1b60:ab41 which mentions without source the little known factso it could be Hassan adding some actually good and interesting information to the article. That one however also has an edit to en.wikipedia.org/wiki/Ernest_Nagel so maybe it's not him.
after working at Washington University's Medical Libraries Group (having been recruited out of SUNY Buffalo for the summer).
Screenshot of allisonhuynh.com by the Daily Mail
. Source. TP-Link Archer VR2800 router Virgin Media Hub 3.0 Wifi setup by Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16- "Operation mode" > "Wireless router mode" (was "DSL Modem/Router mode" by default).
- "Network" > "Internet" > "Add" > "Internet Connection Type" > "Dynamic IP" > "Save"
Custom configs we had, not sure if mandatory:
- Dynamic DHPC mode
- Unicast DHCP
Wait for TP link to fully reboot.
Connect port 4 of tp link (marked WAN/LAn) to port 1 of VM Hub (unmarked, but it is magic, has to be port 1).
Finally, AFTER everything else is setup, turn on the Hub and wait for a few minutes. It ONY WORKS if you turn it on after everything is setup.
Outcome:
- hub light turns purple: www.reddit.com/r/VirginMedia/comments/c703t6/purple_light_on_the_box/
- Archer WAN light turns on white. Not red. Red means error
- you have Wifi. Notably, the 5G Wifi is way way faster and reaches the WAN limit of 256 Mbps.
- Ethernet does not work anymore on either Hub nor Archer, Wifi only. But it doesn't matter because the 5G Wifi already reaches the speed limit.
Bibliography:
- community.virginmedia.com/t5/Forum-Archive/Connecting-Tp-link-archer-vr2800-to-Hub-3/td-p/4765927 This was The thread, the only one that clearly explained the fundamental importance of turn on off ordering by "jbrennand".
- community.tp-link.com/en/home/forum/topic/269540
- community.tp-link.com/en/home/forum/topic/170344
- community.virginmedia.com/t5/Gaming-Support/Connecting-Archer-VR2800-to-Hub-4/td-p/5246513
She posed naked on horseback for Forbes to promote animal rights in 1997.
A ultra low resolution reproduction of the image can be found at: rohitnair.wordpress.com/2011/12/13/cisco-history-cisco-systems-history-and-trivia-brand-history-and-trivia/
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.
Figure 4. Visual Studio Code extension tree navigation.
Figure 5. Web editor. You can also edit articles on the Web editor without installing anything locally.Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. 
- Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact