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...

the number of possible map projections.: 1  More generally, projections are considered in several fields of pure mathematics, including differential geometry...

A 3D projection (or graphical projection) is a design technique used to display a three-dimensional (3D) object on a two-dimensional (2D) surface. These...

In mathematics, a stereographic projection is a perspective projection of the sphere, through a specific point on the sphere (the pole or center of projection)...

product – Mathematical set formed from two given sets Projection (mathematics) – Mapping equal to its square under mapping composition Projection (measure...

The Peirce quincuncial projection is the conformal map projection from the sphere to an unfolded square dihedron, developed by Charles Sanders Peirce in...

The Mercator projection (/mərˈkeɪtər/) is a conformal cylindrical map projection first presented by Flemish geographer and mapmaker Gerardus Mercator...

In mathematics and statistics, random projection is a technique used to reduce the dimensionality of a set of points which lie in Euclidean space. According...

chemical bond from front to back Projection (mathematics), any of several different types of geometrical mappings Projection (linear algebra), a linear transformation...

In mathematics, when the elements of some set S {\displaystyle S} have a notion of equivalence (formalized as an equivalence relation), then one may naturally...

ellipsoid) is preserved in the image of the projection; that is, the projection is a conformal map in the mathematical sense. For example, if two roads cross...

to the perpendicular angle used in orthographic projection. Mathematically, the parallel projection of the point ( x , y , z ) {\displaystyle (x,y,z)}...

globe has no boundaries. Most map projections can be interrupted beyond what is required by the projection mathematics. The reason for doing so is to improve...

In mathematics, the scalar projection of a vector a {\displaystyle \mathbf {a} } on (or onto) a vector b , {\displaystyle \mathbf {b} ,} also known as...

projection (also orthogonal projection and analemma) is a means of representing three-dimensional objects in two dimensions. Orthographic projection is...

Linear or point-projection perspective (from Latin perspicere 'to see through') is one of two types of graphical projection perspective in the graphic...

In linear algebra and functional analysis, a projection is a linear transformation P {\displaystyle P} from a vector space to itself (an endomorphism)...

parameters of the projection. A combination of Putniņš P4ʹ and Eckert IV projections was used as the basis. Mathematical formulae for the projection were derived...

out the mathematical formula to produce that effect. Most mapmakers start with the mathematics. — 1988 New York Times article The projection is defined...

A parallel projection is a particular case of projection in mathematics and graphical projection in technical drawing. Parallel projections can be seen...

Logic of relatives Object-role modeling Projection (mathematics) Projection (relational algebra) Projection (set theory) Relation Relation (database)...

The Gall–Peters projection is a rectangular, equal-area map projection. Like all equal-area projections, it distorts most shapes. It is a cylindrical...

corresponding subset of planar projections are referred to as parallel projections. Mathematically, planar projections are linear transformations acting...

is the signed measure of its projection on the primary axis. Its absolute value is the distance between the projection and the origin of the axis, and...

In mathematics, particularly in functional analysis, a projection-valued measure, or spectral measure, is a function defined on certain subsets of a fixed...

gnomonic projection, also known as a central projection or rectilinear projection, is a perspective projection of a sphere, with center of projection at the...

The Dymaxion map projection, also called the Fuller projection, is a kind of polyhedral map projection of the Earth's surface onto the unfolded net of...

Isometric projection is a method for visually representing three-dimensional objects in two dimensions in technical and engineering drawings. It is an...

The Winkel tripel projection (Winkel III), a modified azimuthal map projection of the world, is one of three projections proposed by German cartographer...

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...