Articles Title Id Created Updated
1Binary mass-ratio reversalbinary-mass-ratio-reversal2026-10-052026-10-05
1Algol paradoxalgol-paradox2026-10-052026-10-05
1Alfvén frequencyalfven-frequency2026-10-052026-10-05
1Alfvén radiusalfven-radius2026-10-052026-10-05
1Airy power-series fundamental pairairy-power-series-fundamental-pair2026-10-052026-10-05
1Product affine connectionproduct-affine-connection2026-10-052026-10-05
1Descent of an SU(2) representation to SO(3)descent-of-an-su-2-representation-to-so-32026-10-052026-10-05
1Continuity equation for a superbubble similarity solutioncontinuity-equation-for-a-superbubble-similarity-solution2026-10-052026-10-05
1Energy normalization of a continuously driven spherical shockenergy-normalization-of-a-continuously-driven-spherical-shock2026-10-052026-10-05
1Central energy input in a similarity solutioncentral-energy-input-in-a-similarity-solution2026-10-052026-10-05
1Stationary covariance bound for reversible Markov chainsstationary-covariance-bound-for-reversible-markov-chains2026-10-052026-10-05
1Relative coordinate for two identical vorticesrelative-coordinate-for-two-identical-vortices2026-10-052026-10-05
1Core-quotient bijection for partitionscore-quotient-bijection-for-partitions2026-10-052026-10-05
1Edge-triangle symmetrizationedge-triangle-symmetrization2026-10-052026-10-05
1Half-integer zeta-regularized mode sumhalf-integer-zeta-regularized-mode-sum2026-10-052026-10-05
1EM for zero-inflated negative binomial regressionem-for-zero-inflated-negative-binomial-regression2026-10-052026-10-05
1Spectrum of a three-dimensional matrix with zero row sumsspectrum-of-a-three-dimensional-matrix-with-zero-row-sums2026-10-052026-10-05
1Semistandard Young tableausemistandard-young-tableau2026-10-052026-10-05
1Standard Young tableaustandard-young-tableau2026-10-052026-10-05
1Olshanskii centralizer lemmaolshanskii-centralizer-lemma2026-10-052026-10-05

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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!
We have two killer features:
  1. 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-calculus
    Articles 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/derivative
  2. 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.
    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.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
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