(archaeology) A two-dimensional region with parallel sides and pointed ends, usually representing the emergence and later disappearance of an entity in a graph over time.

plural of battleship-shaped curve

(topology) The theorem that states that a simple closed curve (Jordan curve) divides the plane into precisely two distinct areas.

(mathematics) In real algebraic geometry, a theorem that describes the possible numbers of connected components that an algebraic curve can have, in terms of the degree of the curve.

(Singapore, humorous) A notional deity having power over the bell curve grading system in which grades are adjusted to fit a normal distribution.

(physics) A worldline that returns to its starting point.

plural of closed timelike curve

plural of Bethe-Slater curve

A chart showing the exchange energy for transition metals as a function of the ratio of the interatomic distance to the radius of the electron shell. It illustrates why certain metals are ferromagnetic and others are antiferromagnetic.

(economics) A chart plotting the relationship between inequality and intergenerational social immobility in several countries around the world.