Tags
A tag is a keyword or label that categorizes your question with other, similar questions.
Reed-Muller codes are error-correcting codes that are used in wireless communications applications, particularly in deep-space communication.
13 questions
For questions about realcompact spaces. A Tychonoff space is realcompact if every real z-ultrafilter on it is fixed. Equivalently, a space is realcompact if it can be embedded as a closed subspace of $\mathbb{R}^\kappa$ for some cardinal $\kappa$. For reference see "Rings of continuous functions" by Gillman and Jerison.
13 questions
For questions related to radon transform. It's an integral transform whose inverse is used to reconstruct images from medical CT scans.
13 questions
Polish group are topological groups which are complete and separable, i.e., have a countable dense subset and are completely metrizable. Polish groups are homeomorphic to separable complete metric spaces.
Use this tag when asking a question regarding these groups.
13 questions
This tag is used for both basic and advanced questions on polynomials that are palindromic; that is, reversing the coefficients (e.g., the highest and lowest degree coefficients swap) leaves the polynomial unchanged. This tag also covers polynomials that are antipalindromic, conjugate reciprocal, self-inversive, and similar variations.
13 questions
This tag is for questions regarding to "monomial function", a mathematical expression which is made up of only one term.
13 questions
For questions related to Lyndon words, strings that are strictly smaller in order than all of their roations. Consider using with the [combinatorics] tag.
13 questions
For questions related to hyperspace (an $n$-dimensional Euclidian space with $n > 3$).
13 questions
Graph Invariants are properties that are preserved by the structure of the graph, and are not exclusive to a given representation of it. Common examples include planarity and cyclicity. Make sure to use this tag only if your question involves an invariant (or a proposed invariant) of graphs or of a subclass of graphs.
13 questions
A fixed-point number representation is a real data type for a number that has a fixed number of digits after (and sometimes also before) the radix point. Fixed-point number representation can be compared to the more complicated floating-point number representation.
13 questions
For questions related to filtration in mathematics. The filtration can be interpreted as representing all historical but not future information available about the stochastic process.
13 questions
A semialgebra on a set is class of subsets of the set. It contains the original set and the empty set. Further the class is closed under finite intersections and any difference of two sets belonging to it can be written as a finite union of mutually disjoint elements of it. It is used especially in the theory of measures and probabilities.
12 questions
A P.I Controller is a feedback control loop that calculates an error signal by taking the difference between the output of a system.
12 questions
A Lax pair is a pair of time-dependent matrices or operators that satisfy a corresponding differential equation, called the Lax equation.
12 questions
Fourier–Motzkin elimination is an algorithm for eliminating variables from a system of linear inequalities.
12 questions
12 questions
Use this tag for questions about the family of all cut sets of an undirected graph.
12 questions
Deals with the act of viewing an algebraic object as the "shadow" of a category. Categorification is not a well-defined term, but instead refers to a broad idea. This should be used with the (category-theory) tag, and at least one more tag depending on the types of algebraic objects being considered.
12 questions
Association schemes belong to both algebra and combinatorics. They provide a unified approach to many topics, for example combinatorial designs and block codes. Association schemes also generalize groups and character theory of linear representations of groups.
12 questions
For questions related to twistor theory. Twistor theory maps the geometric objects of conventional $3+1$ space-time (Minkowski space) into geometric objects in a $4$ dimensional space with metric signature $(2,2)$. This space is called twistor space, and its complex valued coordinates are called "twistors."
11 questions
11 questions
For questions related to Spanish translations of mathematical texts and reference requests for Spanish texts.
11 questions
A $\lambda$-ring or lambda ring is a commutative ring together with some operations $\lambda^n$ on it that behave like the exterior powers of vector spaces.
11 questions
A generalized topology, $\mu$ on a set $X$ is a collection of subsets of $X$ s.t. $\varphi\in\mu$ and arbitrary unions of members of $\mu$ belong to $\mu$; and the ordered pair $(X, \mu)$ then stands for a generalized topological space.
11 questions
11 questions
11 questions
A calibrated manifold is a Riemannian manifold (M,g) of dimension n equipped with a differential p-form φ (for some 0 ≤ p ≤ n)
11 questions
A refutation calculus for logic setting up an analytic tree structure on the subformulas to show that the negation of a formula cannot be satisfied. Also known as "semantic tableau" or "truth tree".
11 questions
For questions concerning the Alexandroff compactification of a locally compact topological space, which is a compact topological space which contains the original space and one extra point.
11 questions
10 questions
For questions related to Renyi entropy. The Rényi entropy of order $α$ , where $α\geq0$ and $α\neq1$, is defined as $\displaystyle \mathrm {H} _{\alpha }(X)={\frac {1}{1-\alpha }}\log {\Bigg (}\sum _{i=1}^{n}p_{i}^{\alpha }{\Bigg )}$.
10 questions
In mathematics, the regula falsi, method of false position, or false position method is a very old method for solving an equation with one unknown, that, in modified form, is still in use. In simple terms, the method is the trial and error technique of using test ("false") values for the variable and then adjusting the test value according to the outcome.
10 questions
A metabelian group is a group, that is an extension of an abelian group by an abelian group. To be used with the tag [group-theory]
10 questions