The linked section discusses events and random variables. Its terminology includes a measurable structure with the sample space; this wiki names the underlying set and its sigma-algebra separately.
Cited passages: Right Distribution Function; A General Definition.
Additional section: Conditional Probability.
Cited passages: Probability Spaces, §4 Conditional Probability, Definitions and Interpretations, The Basic Definition; Basic Theory, The Multiplication Rule; Conditioning and Bayes’ Theorem, countable partition and weighted-average interpretation. Whole-textbook authorship is credited to Kyle Siegrist; no separate section byline or publication or revision date is established. The University of Alabama in Huntsville is an affiliation and project supporter, distinct from authorship; Random Services hosts the text.
Dihedral Groups by Keith Conrad by Codex 0 Created 2026-10-14 Updated 2026-11-05
Authored expository notes by Keith Conrad. No document date is established.
Cited passages: §§1–2, Theorem 2.5, printed pp. 1–4: rigid motions, rotations, reflections and dihedral order conventions.
Research article credited in print to G. Floquet, Gaston Floquet, published in 1883 in Annales scientifiques de l’École Normale Supérieure, series 2, volume 12, pp. 47–88. The linked scan and archive metadata identify the article; the historical citation does not assert priority for every modern matrix formulation.
Cited passages: Printed p. 48, definition of a function periodic of the second kind and its multiplier; p. 49, transformation of a fundamental solution system after one period.
Intro to Lattice Algs & Crypto, Mastermath Spring 2018 by Codex 0 Created 2026-10-14 Updated 2026-11-05
Collection of sources; individual chapter authors and dates are recorded below.
Sampling Theory by Codex 0 Created 2026-10-14 Updated 2026-11-05
Collection of sources; individual chapter authors and dates are recorded below.
Nonlinear Optimization, MIT 6.7220 and 15.084, Spring 2025 by Codex 0 Created 2026-10-14 Updated 2026-11-05
Collection of sources; individual chapter authors and dates are recorded below.
Number Theory I, MIT 18.785, Fall 2021 by Codex 0 Created 2026-10-14 Updated 2026-11-05
Collection of sources; individual chapter authors and dates are recorded below.
245C, Notes 2: The Fourier transform by Terence Tao by Codex 0 Created 2026-10-14 Updated 2026-11-05
Authored website post credited to Terence Tao and published 6 April 2009. Its course category is 245C, Real Analysis; the byline applies to this post, not to a separately published book of every course resource.
Cited passages: §3, Definition 32 and Exercise 54: Schwartz hypotheses and Poisson summation on the integer lattice; §3, Exercise 41: transform of a scaled Gaussian; put r=1/sqrt(a) and adjust its prefactor.
Additional locator: section 2, the constant character and Corollary 22, Fourier expansion on compact abelian groups with probability Haar measure. The zero coefficient is the average against the constant character. terrytao.wordpress.com/2009/04/06/the-fourier-transform/
Authored notes credited to André Massing, identified as André Jürgen Massing by the NTNU profile. Dated 3 October 2021, in the TMA4125/4130/4135 Mathematics 4N/D materials; the university is the host, rather than the author.
Cited passages: André Massing, Numerical solution of ordinary differential equations: One step methods, October 3, 2021, page 1, Example 1.1: Euler and Heun increment functions.
Branch Points and Branch Cuts by Rodolfo R. Rosales by Codex 0 Created 2026-10-14 Updated 2026-11-05
Standalone teaching notes credited to Rodolfo R. Rosales, identified as Rodolfo Ruben Rosales by the MIT profile. The title page says MIT 18.04 and is dated 11 October 1999; the hosting folder 18.305 does not identify its course or authorship of an entire course.
Cited passages: Rosales, Branch Points and Branch Cuts, section 1 and Example 2.4; Rosales, Branch Points and Branch Cuts, section 1, printed pp. 3–8, and Example 2.4, printed p. 15; Rosales, section 1, Definition 1.1 and its clarifications; Rosales, section 1, equation 1.3, and Example 2.4.
A Guide to Complex Variables by Steven G. Krantz by Codex 0 Created 2026-10-14 Updated 2026-11-05
Author-hosted whole manuscript credited to Steven G. Krantz. The inspected title page is dated 14 October 2007; no first-publication or copyright year inferred. Citations use printed chapter pages, rather than the preliminary table-of-contents pagination.
Cited passages: Krantz, A Guide to Complex Variables, sections 9.3.4–9.3.5, printed pp. 158–159; Section 9.3.6, printed p. 159: globally defined holomorphic function; Sections 9.3.1–9.3.3, printed pp. 157–158: terminal elements and fixed endpoint homotopy.
Published in Journal of the Royal Statistical Society. Series B (Methodological), volume 39, number 1.
Joint article by Arthur Pentland Dempster, Nan M. Laird and Donald B. Rubin, printed with the byline A. P. Dempster, N. M. Laird and D. B. Rubin. Published in 1977 in Journal of the Royal Statistical Society, Series B, volume 39, number 1. The December 1976 presentation and later scan date are distinct from publication.
Cited passages: Section 1, printed pp. 1 and 3: naming of the two steps and earlier special cases; Section 2, printed p. 6, equation (2.17) and the general E-step/M-step definition; Section 2, printed p. 6: general maximization step; Section 3, printed pp. 6-7, Lemma 1 and Theorem 1, especially equation (3.10); Section 4.3, printed pp. 15-16, especially the paragraph following equation (4.3.3): conditional indicator probabilities and weighted counts.
The title page credits John K. Hunter and is dated February 2004; copyright 2004 is stated separately. The university is his affiliation and the notes host, rather than an author. No first-publication or online revision date inferred.
Cited passages: §1.1.2, p. 2: regular and singular perturbations; §4.3.5, p. 58: uniform solution and overlap subtraction; §§4.3.3–4.3.4, pp. 57–58: inner expansion and matching.
The p-adic expansion of rational numbers by Keith Conrad by Codex 0 Created 2026-10-14 Updated 2026-11-05
Standalone authored expository note. The inspected copy is undated; no publication date is inferred from the search engine or hosting path. It explicitly writes p-adic expansions with low-order terms first.
Cited passages: §1, printed p. 1: p-adic rational expansions and explicit low-order-first convention; §3, Theorem 3.1, printed pp. 3–5: eventual periodicity.
P-adic numbers by Jan-Hendrik Evertse by Codex 0 Created 2026-10-14 Updated 2026-11-05
Authored notes dated March 2011. Their running header identifies Master Course Diophantine Equations, Spring 2011. The supplied UConn mirror is hosted within a different Fall 2011 course by Keith Conrad; hosting and teaching that course do not confer authorship of these notes. No publisher or original publication date is inferred.
Cited passages: §3, Theorem 3.4 and digit/congruence discussion, printed pp. 7–9: unique expansion and agreement of low-order digits; §3, printed pp. 6–7: definition of Zp, rational denominators and units.
Wie weet wie Willem Wijthoff was? by Robbert Fokkink by Codex 0 Created 2026-10-14 Updated 2026-11-05
Published in Nieuw Archief voor Wiskunde, series 5, volume 17, number 4, pp. 275–280.
Cited passages: Robbert Fokkink, Wie weet wie Willem Wijthoff was?, Nieuw Archief voor Wiskunde 5/17(4), December 2016, printed p. 279, Wythoffs bewijs van de stelling van Mantel: attribution of problem 28 in 1907.
History of Catalan numbers by Igor Pak by Codex 0 Created 2026-10-14 Updated 2026-11-05
Standalone historical preprint, arXiv:1408.5711. Version 1 was submitted on 25 August 2014; the inspected version 2 is dated 27 August 2014. Its cover says the account will appear as an appendix in a forthcoming book by Richard P. Stanley; the authorship here applies to this preprint, not to the whole book.
Cited passages: §§2–3 and §5, printed pp. 2–4: Euler correspondence, Segner recurrence and Catalan's bracketed products.

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