A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
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polynomials× 2070
expressions like $15x^3 - 14x^2 + 8$. Questions tagged with this concern common operations on polynomials, like adding, multiplying, dividing, factoring and solving for roots.
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inequality× 2047
Questions on proving and manipulating inequalities.
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probability-distributions× 1934
Questions on using, finding, or otherwise relating to probability distributions, pdfs, cdfs, or the like.
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discrete-mathematics× 1898
Questions on discrete mathematics generally: "the study of mathematical structures that are fundamentally discrete rather than continuous"
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algorithms× 1852
Mathematical questions about Algorithms, including the Analysis of Algorithms, Combinatorial Algorithms, proofs of correctness, invariants, and semantic analyses
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soft-question× 1822
For questions that don't admit a definitive answer. Please do not ask too many of these.
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ring-theory× 1790
for questions about rings, which are a type of structure studied in abstract algebra and algebraic number theory.
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pde× 1649
for "partial differential equations". As opposed to "ordinary differential equations".
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stochastic-processes× 1544
A stochastic, or random, process describes the correlation or evolution of random events. It is used to model stock market fluctuations and electronic/audio-visual/biological signals. Among the most w…
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set-theory× 1484
for set theory topics typically studied at the advanced undergraduate or graduate level. These include cofinality, axioms of ZFC, axiom of choice, forcing, set-theoretic independence, larg…
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optimization× 1403
the process of choosing the "best" value among possible values. They are often formulated as questions on the minimization/maximization of functions, with or without constraints.
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convergence× 1403
Convergence of sequences and different modes of convergence.
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notation× 1389
Question on the meaning, history, and usage of mathematical symbols and notation. Please remember to mention where (book, paper, webpage, etc.) you encountered any mathematical notation you are asking…
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numerical-methods× 1374
Questions on numerical analysis/numerical methods; methods for approximately solving various problems that often do not admit exact solutions.
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derivatives× 1333
Questions on the evaluation of derivatives or problems involving derivatives (for example, use of the mean value theorem).
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vector-spaces× 1283
For questions about vector spaces and their properties. More general questions about linear algebra belong under the linear-algebra tag. A vector space is a space which consists of elements called "ve…
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finite-groups× 1253
refers to questions asked in the field of Group Theory which, in particular, focus on the groups of finite order.
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fourier-analysis× 1215
Fourier analysis, also known as spectral analysis, encompasses all sorts of Fourier expansions, including Fourier series, Fourier transform and the discrete Fourier transform (and relatives). The non-…
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field-theory× 1190
for questions about fields and field theory in abstract algebra. A field is, roughly speaking, an algebraic structure in which addition, subtraction, multiplication, and division of eleme…
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category-theory× 1182
studied in category theory using properties of objects and morphisms between them.
Many construction are special cases of categorical limits and colimits (e.g. products in vari…
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terminology× 1169
Questions on the usage and meaning of words in mathematics, the names for mathematical entities, and other such questions.
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prime-numbers× 1161
natural numbers not divisible by any smaller number other than 1. This tag is intended for questions about, related to, or involving prime numbers.
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metric-spaces× 1159
sets on which you can measure the "distance" between any two points. The distance measurement is generally required to be symmetric (so distance from A to B is the same as distance f…
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complex-numbers× 1149
Questions involving complex numbers: numbers of the form $a+bi$ where $i^2=-1$.
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| proof-strategy× 992 |
representation-theory× 974
Representation theory studies (among else) representations of groups by finite matrices. The non-commutative analog of classical Fourier transforms.
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computer-science× 946
All mathematical questions about Computer Science, including Theoretical Computer Science, Formal Methods, Verification, Logic in Artificial Intelligence, and Numerical Analysis
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asymptotics× 839
Questions involving asymptotic analysis, including growth of functions, Big-O notation, Big-Omega and Big-Theta notations.
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modules× 831
For questions about modules over rings, concerning either their properties in general or regarding specific cases.
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algebraic-number-theory× 827
Questions related to the algebraic structure of algebraic integers
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arithmetic× 812
Questions on basic arithmetic, e.g. addition, subtraction, multiplication, division, powers, roots, etc.
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special-functions× 789
Questions on special functions, useful functions that frequently appear in pure and applied mathematics (usually not including "elementary" functions).
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modular-arithmetic× 785
a system of arithmetic of integers. The basic ingredient is the congruence relation $a \equiv b \bmod n$ which means that $n$ divides $b-a$. In modular arithme…
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proof-writing× 771
For questions about the writing of proofs. But instead of focusing the mathematics behind the proof, these questions ask about the details and implementation of the proof.
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recurrence-relations× 770
Questions regarding functions defined recursively, such as the Fibonacci sequence.
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logarithms× 767
Questions related to real and complex logarithms.
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