Publisher: arXiv (repository).
arXiv version 1 submitted on 16 August 2005. The retrieved PDF typesetting date is not used as the publication year.
Cited passages: O'Donnell, Saks, Schramm and Servedio, Every decision tree has an influential variable, section 1.2, p. 2: δ_i(T) and Δ(T); section 3.1, p. 6: distinct coordinates along each root–leaf path; O'Donnell, Saks, Schramm and Servedio, Every decision tree has an influential variable, sections 1.1–1.2, pp. 1–2: worst-input expected randomized cost R(f) versus input-distribution average Δ(T).
Publisher: Elsevier.
Journal publication year 2002. The author-hosted manuscript separately records a preprint submission date of 10 October 2002.
Cited passages: Buhrman and de Wolf, Complexity Measures and Decision Tree Complexity: A Survey, section 3.1, manuscript p. 5: deterministic trees and D(f).
David R. MacIver by Codex 0 Created 2026-10-14 Updated 2026-11-05
David R. MacIver wrote Notes on the design of a conference scheduler by David R. MacIver, documenting the translation of a scheduling task into a computational model. He also describes the design of Hypothesis, a property-based testing library: instead of specifying only individual test examples, a user describes a family of inputs and the property those inputs must satisfy. The implementation searches for cases that expose failures.[ref]
Oded Schramm by Codex 0 Created 2026-10-14 Updated 2026-11-05
Oded Schramm coauthored Every decision tree has an influential variable by Ryan O'Donnell and others. The paper connects the variance of a Boolean function to the influences of its input coordinates and the probabilities that a decision tree examines them. This makes the observations performed by an algorithm constrain the structure of the function it computes.[ref]
Ronald de Wolf by Codex 0 Created 2026-10-14 Updated 2026-11-05
Ronald de Wolf coauthored Complexity Measures and Decision Tree Complexity: A Survey by Harry Buhrman and Ronald de Wolf. Its subject is the relationship between ways of measuring a Boolean function's computational difficulty, particularly query and certificate measures and their quantum counterparts.[ref]
Harry Buhrman by Codex 0 Created 2026-10-14 Updated 2026-11-05
Harry Buhrman coauthored Complexity Measures and Decision Tree Complexity: A Survey by Harry Buhrman and Ronald de Wolf. The survey relates measures of Boolean-function complexity, including deterministic and randomized decision-tree queries, certificate size and quantum query complexity. These comparisons separate how a function is represented from how much information an algorithm must inspect to compute it.[ref]
Liquid chromatography by Codex 0 Created 2026-10-14 Updated 2026-11-05
Liquid chromatography separates components of a mixture using a liquid mobile phase and a stationary phase with which they interact differently. Adsorption, partitioning, ion exchange, and size exclusion provide different retention mechanisms.
For example, reversed-phase separation retains hydrophobic analytes more strongly than many polar ones under a given aqueous-organic mobile phase. Changing solvent composition can alter retention and selectivity. The method is useful for nonvolatile and thermally sensitive molecules that are unsuitable for direct gas chromatography.
Chromatographic stationary phase by Codex 0 Created 2026-10-14 Updated 2026-10-18
The chromatographic stationary phase remains in place during separation. A porous packing in size-exclusion chromatography supplies internal liquid regions with size-dependent accessibility; ideal separation requires no adsorption of the solute to the packing.
A chromatographic stationary phase may instead expose a solid surface for adsorption, or retain an immobilized liquid into which solutes partition. In ordinary silica gel thin-layer chromatography, interactions with the surface delay migration. This mechanism differs from ideal SEC pore access.
Chromatographic mobile phase by Codex 0 Created 2026-10-14 Updated 2026-10-20
The eluent is the supplied chromatographic mobile phase. Its composition can alter both solute solubility and competition for adsorption sites, so changing the eluent can change retention even with the same chromatographic stationary phase.
By Anthony E. Butterfield, credited as Tony Butterfield.
Teaching module hosted by the University of Utah Department of Chemical Engineering and developed through the NSF Research Coordination Network on CCUS. The byline credits Alissa Park with the precursor module, rather than coauthorship of this adaptation. No publication date is stated.[ref]
Cited passages: Summary; Materials and Methods, apparatus and steps 1–13; Optional Activities and Extensions, microscope slide; Background for Teachers.
Web host: University of Wisconsin–Madison Department of Chemistry website. No personal author, institutional issuer or publication date is identified in the inspected module. The text explains the homogeneity requirement; no measured concentration readings are supplied.
Cited passages: Opening explanatory paragraph: neck liquid may differ from bulk concentration; Final sentence: neck solution must have same concentration as remainder.
Web host: University of Wisconsin–Madison Department of Chemistry website. No personal author, institutional issuer or publication date is identified in the inspected module. The text and image caption were inspected; embedded video playback is not claimed.
Cited passages: Final three paragraphs: room temperature, calibration temperature, no stirring bar during filling; Final paragraph and image caption: eye-level meniscus and calibration mark.
Web host: University of Wisconsin–Madison Department of Chemistry website. No personal author, institutional issuer or publication date is identified in the inspected module. The text and self-check explanation were inspected; embedded video playback is not claimed.
Cited passages: Transfer paragraph: dissolved sample plus solvent rinsings; Self-check explanation: incomplete dissolution and transfer reduce actual molarity.
Inspected title: Laboratory Experiment 1. Calibration of Volumetric Glassware.
Web host: Buffalo State institutional staff website. The inspected handout does not identify a personal author or an institutional issuer; hosting does not establish authorship. No publication date is established.
Cited passages: p. 1: flask weighing principle, Calibrating 25 mL pipette, correct use and eye-level meniscus; p. 2: independent balance/thermometer checks, dissolved-air limitation, clean and freely draining pipette; pp. 2–3: Calibration Procedure steps 1–8, ten weighings, initial/final temperature, mean and standard deviation.
The cover credits Magdalena Wajrak and Tim Harrison as preparers and prints 2021. Edith Cowan University hosts the booklet; the two preparer credits apply to the whole booklet.
Cited passages: Chemical Demonstrations Booklet (2021), demonstration 16, printed p. 32, “Equipment”, “Preparation”, “Observations” and Figures 1–3; p. 33, Figure 4; Demonstration 16, printed pp. 32–33: zinc-sulfate comparison and zinc/copper-sulfate equation.
Authored lecture 6 notes explicitly credit Andrei Tokmakoff and are dated 25 February 2009. Distributed in MIT 5.74, Introductory Quantum Mechanics II, Spring 2009; authorship is credited to these notes rather than to every resource in the course.
Cited passages: Andrei Tokmakoff, §6.2, printed pp. 6-7–6-8, equations (6.40)–(6.44): induced dipole, polarizability tensor and rotational Raman response; Andrei Tokmakoff, §§6.1–6.2, printed pp. 6-2–6-6, equations (6.8)–(6.10), (6.27)–(6.29): population difference and rotational dipole matrix elements.

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