Applied Psychological Measurement is a field that focuses on the development, administration, and interpretation of psychological tests and assessments in real-world settings. It combines principles of psychology, education, and psychometrics to measure psychological constructs such as intelligence, personality, aptitude, and emotional responses. Key components of Applied Psychological Measurement include: 1. **Test Development**: Designing assessments that accurately measure specific psychological traits or abilities. This involves creating valid and reliable test items and ensuring that they align with the intended constructs.
The Hilbert-Kunz function is a significant concept in commutative algebra and algebraic geometry, particularly in the study of singularities and local cohomology. It provides a way to measure the growth of the dimension of the local cohomology modules of a local ring with respect to a given ideal.
In the context of programming and data structures, "inclusion order" typically refers to the sequence or hierarchy in which elements are included within a structure or framework. However, the term can have specific meanings based on the context in which it is used, such as in set theory, computer science, or linguistics. ### In Set Theory and Mathematics In set theory, inclusion order describes the relationship between sets based on subset inclusion.
The Eilenberg–Niven theorem is a result in number theory that characterizes the structure of the set of integers that can be expressed as the greatest common divisor (gcd) of two polynomials with integer coefficients. More specifically, the theorem addresses the conditions under which such gcds can take on certain values.
Faithful representation is a fundamental qualitative characteristic of financial information, as defined by the International Financial Reporting Standards (IFRS) and the Generally Accepted Accounting Principles (GAAP). It means that the financial information accurately reflects the economic reality of the transactions and events it represents. To achieve faithful representation, financial information should meet three key attributes: 1. **Completeness**: All necessary information must be included for users to understand the financial position and performance.
The term **subquotient** can be context-dependent, as it may not have a universally accepted definition across all fields. However, it is often used in mathematical contexts, particularly in group theory or algebra. In group theory, a subquotient typically refers to a quotient group of a subgroup of a given group.
Acta Numerica is a well-known academic journal that publishes high-quality papers in the field of numerical analysis and its applications. The journal focuses on the development and analysis of numerical methods for solving mathematical problems, particularly those arising in scientific computing and engineering. It features research articles, survey papers, and occasionally special issues on specific topics related to numerical methods, algorithms, and computational techniques.
"Nullform" typically refers to a concept in different contexts, including art, design, and computer science, but it is not a widely defined or standardized term. Here's a breakdown of where it might be used: 1. **Art and Design**: In contemporary art or design, "nullform" might refer to a minimalist approach, emphasizing emptiness, simplicity, or the absence of form. It can be an exploration of negative space or the idea of a blank canvas.
In the context of coalgebra, a **primitive element** refers to a specific type of element in a coalgebra that encodes the notion of "root" elements that can generate the structure of the coalgebra under co-multiplication. To understand this concept, let's provide some background on coalgebras and their fundamental properties.
Quantized enveloping algebras, also known as quantum groups, are a class of algebras that generalize the classical enveloping algebras associated with Lie algebras. They arise in the context of quantum group theory and have significant implications in various areas of mathematics and theoretical physics, particularly in representation theory, quantum algebra, and quantum topology.
Adler-32 is a checksum algorithm created by Mark Adler, which is primarily used for data integrity verification. It is designed to be fast and efficient while generating a relatively small checksum for a given input of data. Adler-32 computes a checksum by combining the sum of the bytes of the input data into two separate values: `A` and `B`. The final checksum is formed by combining these two values into a 32-bit result.
Quillen's lemma is a result in algebraic topology, specifically within the context of homotopy theory. It deals with the properties of certain types of simplicial sets and the concept of "Kan complexes.
The Witten zeta function is a mathematical construct that arises in the context of the study of certain quantum field theories, particularly those related to string theory and topological field theories. Named after the physicist Edward Witten, this zeta function is often defined in terms of a spectral problem associated with an operator, typically in the framework of elliptic operators on a manifold.
The Schreier coset graph is a mathematical concept arising in the field of group theory and is often used in the study of group actions and their combinatorial properties. Given a group \( G \) and a subgroup \( H \), the Schreier coset graph is a graph that visually represents the action of \( G \) on the left cosets of \( H \) in \( G \).
Stone algebra is a type of algebraic structure that arises in the context of topology and lattice theory, particularly in the study of Boolean algebras and their representations. The term is often associated with the work of Marshall Stone, a mathematician who made significant contributions to functional analysis and topology. In a more specific sense, Stone algebras can refer to: 1. **Stone Representation Theorem**: This theorem states that every Boolean algebra can be represented as a field of sets.
A Suslin algebra is a specific type of mathematical structure used in set theory and relates to the study of certain properties of partially ordered sets (posets) and their ideals. Named after the Russian mathematician Mikhail Suslin, Suslin algebras arise in the context of the study of Boolean algebras and the concepts of uncountability, specific kinds of collections of sets, and their properties.
Brouwer's conjecture, proposed by the Dutch mathematician L.E.J. Brouwer in the early 20th century, is a statement in the field of topology, particularly concerning the nature of continuous functions and fixed points. Specifically, the conjecture asserts that every continuous function from a compact convex set to itself has at least one fixed point.
The complex network zeta function is a mathematical tool used in the study of complex networks, which are structures characterized by interconnected nodes (or vertices) and edges (or links). This zeta function is often associated with certain properties of the network, such as its topology, dynamics, or spectral characteristics. ### Key Concepts 1. **Complex Networks**: These are graphs with complex structures, which can represent various real-world systems, such as social networks, transportation systems, biological networks, etc.
In graph theory, a dual graph is a construction that relates to a planar graph. To understand dual graphs, it's important to start with the concept of a planar graph itself. A planar graph is a graph that can be drawn on a plane without any edges crossing. ### Key Concepts of Dual Graphs 1. **Vertices of the Dual Graph**: For every face (region) in the original planar graph, there is a corresponding vertex in the dual graph.
The Expander Mixing Lemma is a result from the field of graph theory, particularly in the study of expander graphs. Expander graphs are sparse graphs that have strong connectivity properties, which makes them useful in various applications, including computer science, combinatorics, and information theory. The Expander Mixing Lemma provides a quantitative measure of how well an expander graph mixes the vertices when performing random walks on the graph.

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