Children: Algebra stubs
A *Quasi-Lie algebra* is a generalization of Lie algebras that relaxes some of the traditional properties that define a Lie algebra. While Lie algebras are defined by a bilinear operation (the Lie bracket) that is antisymmetric and satisfies the Jacobi identity, quasi-Lie algebras may abandon or modify some of these conditions.
Quasi-identity is a concept used in formal logic, particularly in the study of algebraic structures and model theory. It refers to a specific type of logical statement or relationship that resembles an identity but is not necessarily true under all interpretations or in all models.
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 Quillen spectral sequence is a tool used in homotopy theory and algebraic topology, specifically in the context of derived categories and model categories. It arises from the study of the homotopy theory of categories and is used to compute derived functors. ### Context In general, spectral sequences are a method for computing a sequence of groups or abelian groups that converge to the expected group, effectively allowing one to break down complex problems into simpler parts.
Racah polynomials are a family of orthogonal polynomials that arise in the context of quantum mechanics and algebra, particularly in the study of angular momentum and the representation theory of the symmetric group. They are named after the physicist Gregorio Racah, who introduced them in the context of coupling angular momenta in quantum physics. ### Properties and Characteristics 1.
Rational representation can refer to different concepts depending on the context, but it is most commonly associated with mathematics, particularly in number theory and algebra. 1. **In the context of numbers**: A rational representation usually refers to the expression of a number as a ratio of two integers.
The term "recurrent word" generally refers to a word that appears multiple times in a given text or context. In the study of language, literature, or data analysis, identifying recurrent words can be important for understanding themes, frequency of concepts, or the focus of a discussion. In computational contexts, such as natural language processing (NLP), recurrent words might also be analyzed to understand patterns in text, to build models for tasks like text classification, sentiment analysis, or topic modeling.
In mathematics, particularly in the field of representation theory, the representation of a Lie superalgebra refers to a way of realizing the abstract structure of a Lie superalgebra as linear transformations on a vector space, allowing us to study its properties and actions in a more concrete setting. ### Lie Superalgebras A Lie superalgebra is a generalization of a Lie algebra that incorporates a $\mathbb{Z}/2\mathbb{Z}$-grading.
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 \( G \).
Serre's theorem is a fundamental result in the representation theory of semisimple Lie algebras. It provides a criterion for the simplicity of certain representations and describes the structure of the category of representations of a semisimple Lie algebra.
Shortlex order is a method of ordering sequences, typically strings or lists, based on their length and lexicographic (dictionary) order. Here's how it works: 1. **Length Order**: Sequences are first grouped by their length. All sequences of a shorter length come before sequences of a longer length. 2. **Lexicographic Order**: Within the same length, sequences are ordered lexicographically.
A **simplicial Lie algebra** is a mathematical structure that arises in the study of algebraic topology and differentiable geometry, particularly in the context of generalized symmetries and homotopy theory. It combines concepts from both Lie algebras and simplicial sets.
A slim lattice is a concept in the field of combinatorics, particularly in the study of partially ordered sets (posets) and lattice theory. A lattice is a specific type of order relation that satisfies certain properties, namely the existence of least upper bounds (join) and greatest lower bounds (meet) for any pair of elements.
The term "Standard complex" can refer to different concepts depending on the context, but it's not a widely recognized term on its own.
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 **strongly measurable function** is a concept from measure theory, particularly in the context of functional analysis and probability theory. It is related to the notion of measurability in the setting of a measurable space and a given measure.
In mathematics, particularly in the field of additive number theory, a **sumset** is defined as the set formed by taking the sum of elements from one or more 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.
A symplectic representation typically refers to a representation of a group on a symplectic vector space. Symplectic geometry is a branch of differential geometry and mathematics that studies symplectic manifolds, which are a special type of smooth manifold equipped with a closed, non-degenerate 2-form called the symplectic form.