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:
× 2
× 2
× 2
× 2
× 2
× 2
A metric space characterizes a set of elements by means of one number value for each pair of elements. (Additional conditions may apply.) It formalizes and broadens the idea of geometric distances, as…
× 2
× 2
× 2 × 2
× 2
× 2
× 2
× 2
× 2
× 2
× 2
× 2
× 2
× 2
In theoretical physics, Seiberg–Witten theory is a theory that determines an exact low-energy effective action (for massless degrees of freedom) of a N=2 supersymmetric gauge theory—namely the metric …
a nonlinear hyperbolic partial differential equation in 1 + 1 dimensions involving the d'Alembert operator and the sine of the unknown function. This equation attracted a l…
A topological quantum field theory (or topological field theory or TQFT) is a quantum field theory which computes topological invariants.
star-like objects that are too low in mass to fuse hydrogen-1 but still massive enough to fuse deuterium.
A chemostat (http://en.wikipedia.org/wiki/Chemostat) is a device to grow a cell culture in equilibrium.
A body in space orbiting a star which satisfies 3 criteria. It is small enough to not induce nuclear fusion in its core, it is large enough to be rounded by its own gravity, and it has cleared its orb…
no increase in entropy.
Massive Compact Halo Objects