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A Cevian point P is point with respect to which a set of Cevians of a triangle are taken. Connecting the endpoints of the Cevians through a point P gives the so-called Cevian ...

A number x such that for all epsilon>0, there exists a member of the set y different from x such that |y-x|<epsilon. The topological definition of limit point P of A is that ...

For any point P on the boundary of an ordinary ball, find a neighborhood of P in which the intersection with the ball's boundary cuts the neighborhood into two parts, each ...

A problem sometimes known as Moser's circle problem asks to determine the number of pieces into which a circle is divided if n points on its circumference are joined by ...

An interval into which a given data point does or does not fall.

Not continuous. A point at which a function is discontinuous is called a discontinuity, or sometimes a jump.

The central point in a wheel graph W_n. The hub has degree n-1.

A function which has infinitely many derivatives at a point. If a function is not polygenic, it is monogenic.

A point at which two polygon edges of a polygon meet.

The vertex of a polytope is a point where edges of the polytope meet.