Tags

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.

Questions about the group of isometries of a metric space, in particular, a Riemannian manifold.
17 questions
16 questions
Used for questions about the recursively enumerable sets in computability theory/recursion theory. Should be pretty self-explanatory.
16 questions
In the classical equation, one looks for $R\in\Lambda^2\mathfrak g$ such that $$[R,R]=0,$$ where the bracket is Schouten's bracker in $\Lambda^\bullet\mathfrak g$, the exterior algebra on a Lie algebr…
16 questions
16 questions
Questions about the Tutte polynomial of graphs and matroids, which is a polynomial in two variables encoding many interesting combinatorial informations.
16 questions
16 questions
Questions involving the algebraic structure called magma. Often used in combination with more general tags such as universal-algebra or the top-level tag ra.rings-and-algebras.
16 questions
16 questions
16 questions
16 questions
15 questions
For questions arising from topics discussed during the Polymath5 project, which tried to solve the Erdős discrepancy problem.
15 questions
15 questions
15 questions
Coq is a formal proof management system, also called an interactive theorem prover. It is used to express mathematical assertions, mechanically check proofs of these assertions, find formal proofs, an…
15 questions
For questions on mathematical problems arising from music theory, e.g. scales, harmonies, rhythms, and compositional techniques (such as dodecaphony or minimalism).
15 questions
15 questions
Topological semigroups/monoids: topological space endowed with a continuous semigroup/monoid structure, or, equivalently, semigroup/monoid endowed with a compatible topology.
15 questions
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