In geometry, a disk (also spelled disc) is the region in a plane bounded by a circle. A disk is said to be closed if it contains the circle that constitutes...

disc or disk in Wiktionary, the free dictionary. Disc or disk may refer to: Disk (mathematics), a two dimensional shape, the interior of a circle Disk storage...

sphere Ball – ordinary meaning Disk (mathematics) Formal ball, an extension to negative radii Neighbourhood (mathematics) Sphere, a similar geometric shape...

Towers, or simply pyramid puzzle) is a mathematical game or puzzle consisting of three rods and a number of disks of various diameters, which can slide...

Euler's Disk, invented between 1987 and 1990 by Joseph Bendik, is a trademarked scientific educational toy. It is used to illustrate and study the dynamic...

can be arranged in such a way as to cover the unit disk? More unsolved problems in mathematics The disk covering problem asks for the smallest real number...

In mathematics, the open unit disk (or disc) around P (where P is a given point in the plane), is the set of points whose distance from P is less than...

In mathematics, a subset C of a real or complex vector space is said to be absolutely convex or disked if it is convex and balanced (some people use the...

A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using...

dynamics, momentum theory or disk actuator theory is a theory describing a mathematical model of an ideal actuator disk, such as a propeller or helicopter...

geometric shape. Circle Circle anatomy Annulus (mathematics) – Region between two concentric circles Area of a disk – Concept in geometryPages displaying short...

In optics, the Airy disk (or Airy disc) and Airy pattern are descriptions of the best-focused spot of light that a perfect lens with a circular aperture...

discoid in Wiktionary, the free dictionary. Discoid may refer to: Disk (mathematics), the region in a plane enclosed by a circle Furosemide, a medication...

In mathematics, a plane is a two-dimensional space or flat surface that extends indefinitely. A plane is the two-dimensional analogue of a point (zero...

surface other than a sphere is incompressible if any disk with its boundary on the surface spans a disk in the surface. Incompressible surfaces are used for...

|}\,v^{*}\,z+u^{*}\,{\bigr |}} so that their ratio lies in the open disk. Mathematics portal Unitary group Projective special unitary group, PSU(n) Orthogonal...

itself. Therefore, the area of a disk is the more precise phrase for the area enclosed by a circle. Modern mathematics can obtain the area using the methods...

In mathematics, an annulus (pl.: annuli or annuluses) is the region between two concentric circles. Informally, it is shaped like a ring or a hardware...

In functional analysis, a branch of mathematics, two methods of constructing normed spaces from disks were systematically employed by Alexander Grothendieck...

disk and their pointwise extension to the boundary of the disk. If we have a holomorphic function f {\displaystyle f} defined on the open unit disk D...

rotating infinitely long plane disk, named after Theodore von Kármán who solved the problem in 1921. The rotating disk acts as a fluid pump and is used...

The Jefferson disk, also called the Bazeries cylinder or wheel cypher, is a cipher system commonly attributed to Thomas Jefferson that uses a set of wheels...

called the open unit disk, while the interior of the unit circle combined with the unit circle itself is called the closed unit disk. One may also use other...

RAID (/reɪd/; redundant array of inexpensive disks or redundant array of independent disks) is a data storage virtualization technology that combines...

Open disc can refer to: a disk (mathematics) which does not include the circle forming its boundary the OpenDisc software project This disambiguation...

In mathematics, a projection is an idempotent mapping of a set (or other mathematical structure) into a subset (or sub-structure). In this case, idempotent...

mathematics, Bloch's theorem describes the behaviour of holomorphic functions defined on the unit disk. It gives a lower bound on the size of a disk in...

In mathematics, specifically in functional and complex analysis, the disk algebra A(D) (also spelled disc algebra) is the set of holomorphic functions...

curvature. A geodesic disk is the region on a surface bounded by a geodesic circle. In contrast with the ordinary circle and disk, the geodesic circle...

mathematics What is the largest area of a shape that can be maneuvered through a unit-width L-shaped corridor? More unsolved problems in mathematics In...