# 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.

 Type to find tags:
 biology× 95 For questions regarding mathematical concepts with applications to Biology. geometric-probability× 95 Probabilities of random geometric objects having certain properties (enclosing the origin, having an acute angle,...); expected counts, areas, ... of random geometric objects. For questions about the … golden-ratio× 94 Questions relating to the golden ratio $\varphi = \frac{1+\sqrt{5}}{2}$ formal-proofs× 94 For questions about proofs within a formal system, such as natural deduction or Hilbert system. fractional-calculus× 94 Questions on the differentiation/integration of functions to arbitrary order. big-picture× 94 Questions to get the "big picture" about a subject. uniform-spaces× 94 sums-of-squares× 93 For questions concerning various representation of integers as sums of squares, which are studied in number theory. primality-test× 92 An algorithm for determining whether an input number is prime. catalan-numbers× 92 For questions on Catalan numbers, a sequence of natural numbers that occur in various counting problems. dihedral-groups× 92 For questions on dihedral groups, the group of symmetries of a regular polygon, including both rotations and reflections infinite-groups× 92 For questions about groups where the underlying set has infinite cardinality. derived-functors× 91 optimal-control× 90 lipschitz-functions× 90 For question involving functions satisfying a Lipschitz continuity condition, that is, the distance ratio about the distance of $f(x)$ and $f(y)$ and that of $x$ and $y$ can be bounded independently o… symbolic-computation× 90 Numeric computation usually uses floating point numbers. Symbolic computations use symbols, and can give exact answers, such as $\sum_{n=1}^\infty \frac{1}{n^2} = \frac{\pi^2}{6}$. Mathematica, Maple… regularization× 89 laplacian× 89 The properties of the Laplace differential operator, denoted $\Delta$ or $\nabla^2$, and defined as the divergence of the gradient. For Laplace equation, see (harmonic-functions) graph-isomorphism× 89 isomorphic if they have a function $f$ which provides an exact pairing of vertices in the two graphs such that for any adjacent vertices \$u,v\in \{\mbox{set of vertices of }… graded-rings× 88 finitely-generated× 88 algebras× 88 For questions about algebras, their properties, and their structures. natural-deduction× 88 For questions concerning natural deduction, a formalization in proof theory, and proofs in natural deduction. primitive-roots× 87 For questions about primitive roots in modular arithmetic, index calculus, and applications in cryptography. For questions about primitive roots of unity, use the (roots-of-unity) tag instead. formal-systems× 87 error-propagation× 87 For questions on propagation of errors. hamiltonian-path× 87 A path in a graph that visits each vertex exactly once. ordered-fields× 86 fields which have an additional structure, a linear order compatible with the field structure. This tag is for questions regarding ordered fields and their properties, as well proof… monoidal-categories× 85 additive-combinatorics× 85 about giving combinatorial estimates of addition and subtraction operations on Abelian groups or other algebraic objects. Key words: sum set estimates, inverse theorems, grap… homogeneous-equation× 84 projective-schemes× 84 quantum-groups× 84 root-systems× 83 For questions involving abstract root systems, their associated Weyl groups and Dynkin diagrams, as well as their applications to Lie theory, graph theory, or other related fields. career-development× 83 Questions on mathematical career development. Consider whether your question is more appropriate for Academia Stack Exchange. classical-analysis× 83