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In two dimensions, the curve known as an "egg' is an oval with one end more pointed than the other.

An ellipsoidal section is the curve formed by the intersection of a plane with an ellipsoid. An ellipsoidal section is always an ellipse.

The epispiral is a plane curve with polar equation r=asec(ntheta). There are n sections if n is odd and 2n if n is even. A slightly more symmetric version considers instead ...

The conjecture that Frey's elliptic curve was not modular. The conjecture was quickly proved by Ribet (Ribet's theorem) in 1986, and was an important step in the proof of ...

10^(18) bytes. Unfortunately, the term is sometimes also used to mean 2^(60)=1024^6 bytes. However, the latter usage is deprecated, and the term exbibyte is preferred for ...

A class of processes which attempt to round off a domain and simplify its theory by adjoining elements.

Exotic cohomology is a cohomology theory that extends index theory to a larger class of manifolds.

The curve y=1-e^(ax), illustrated above.

A closed embedded smooth plane curve has at least four vertices, where a vertex is defined as an extremum of curvature.

A distribution of values of a discrete variate represented graphically by plotting points (x_1,f_1), (x_2,f_2), ..., (x_k,f_k), and drawing a set of straight line segments ...