Topics (374k) Articles (387k) Users (410) Discussions (242) Comments (383) Files (12k) New article
Identity source: nchlswllms.github.io/
Portrait of Constantin Carathéodory
. Caratheodory family; photographer and date unknown, as stated in the Commons File. File records family permission as public domain and an origin-country/life-plus-70-or-shorter public-domain tag. Source usage terms, via Wikimedia Commons. Source.Identity source: cse.umn.edu/math/paul-garrett
Portrait of Paul Garrett
. Identity source: mathshistory.st-andrews.ac.uk/Biographies/Sylvester/
Portrait of James Joseph Sylvester
. Alfred Edward Emslie (1848–1918), painted portrait dated 1889; reproduction sourced to Oxford Dictionary of National Biography, article 26872. PD-Art: original public domain in origin/life-plus-100-or-shorter jurisdictions; File also states pre-1931 United States publication. Source usage terms, via Wikimedia Commons. Source.Identity source: claude-brezinski.fr/
Portrait of Claude Brezinski
. Identity source: www.polytechnique.edu/bibliotheque/actualites/cholesky-andre-x1895
Portrait of André-Louis Cholesky
. Unknown photographer (Commons field: no conegut). Public domain (PD-old as declared on Commons). Source and usage information on the linked Wikimedia file page. Source.Identity source: math.mit.edu/directory/profile.html?pid=186
Portrait of Haynes Miller
. Identity source: www.math.ucdavis.edu/people/general-profile?fac_id=romik
Identity source: arxiv.org/pdf/1002.3721v7
Portrait of Robert Daniel Carmichael
. Unknown photographer (Commons field: no coneguts); file uploaded by Ferran Mir. CC BY-SA 4.0, via Wikimedia Commons. Source.A mathematician whose 1885 numerical list is discussed in Carmichael number.[ref]
https://biografie.math.muni.cz/doku.php?id=s:vaclav_simerka. Masaryk University mathematics biography: lifetime 20 December 1819 to 26 December 1887
Portrait of Václav Šimerka
. Jan Vilímek (1860–1938). Public domain (PD-old as declared on Commons). Source and usage information on the linked Wikimedia file page. Source.A mathematics educator and lead author of Precalculus 2e by Jay Abramson.[ref]
https://openstax.org/books/precalculus-2e/pages/preface. About the Authors: senior contributing author Jay Abramson; Development Overview: lead author
Institutional profile: search.asu.edu/profile/230861
A mathematician.[ref]
https://mathshistory.st-andrews.ac.uk/Biographies/Balmer/. Independent professional profile
Portrait of Johann Jakob Balmer
. F. Brandseph, photograph circa 1865; Basel University Library, UBH Portr BS Balmer JJ 1825, 2c/2b/2a; contributed with Wikimedia CH. Public domain in Switzerland under expired-term rule and in life-plus-70 jurisdictions; library declares document public domain. Source usage terms, via Wikimedia Commons. Source.A mathematician researching general relativity, including singularity theorems.[ref]
Professional profile of Roger Penrose (philosophy-of-cosmology.ox.ac.uk). Independent professional identity
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Portrait of Roger Penrose
. Festival della Scienza / Flickr; photograph 6 November 2005; existing Commons headshot crop by TDKR Chicago 101. Creative Commons Attribution-ShareAlike 2.0 Generic., via Wikimedia Commons. Source..jpg?width=250)
Portrait of Ferdinand Georg Frobenius
. Carl Günther (1827–1912). Public domain (as designated on Commons). Source and usage information on the linked Wikimedia file page. Source.
Portrait of Pierre-Simon Laplace
. Lithograph by Zéphirin Belliard after Jean Baptiste Regnault, printed by Delpech, 1834; British Museum 1895,0617.492. Commons PD-scan and PD-old-100-expired: origin/life-plus-100 jurisdictions and US pre-1931 publication, via Wikimedia Commons. Source.
Portrait of Edmond Laguerre
. Unknown artist; nineteenth-century portrait of Edmond Laguerre; current version uploaded by Ssola. Public domain asserted by Commons in origin and life-plus-70 jurisdictions. Source usage terms, via Wikimedia Commons. Source.
Portrait of Olinde Rodrigues
. Unknown artist; nineteenth-century portrait; source recorded as Drouot. Public domain: origin and life-plus-70 jurisdictions; US pre-1931 publication. Source usage terms, via Wikimedia Commons. Source. 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 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
Figure 5. . 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. 
- Infinitely deep tables of contents:
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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