vector
Vector (English: vector, also known as vector) is a mathematical, physical and engineering science and other natural science in the basic concept, that has a size and direction of the geometric object, often marked by the arrow symbol to distinguish it from other The name of the name. Intuitive, the vector is usually marked as an arrow with a line (as shown on the right). The length of the line segment can represent the size of the vector, and the direction of the vector is the direction of the arrow. The displacement, velocity, force, momentum, magnetic moment, current density, etc. in physics are vectors. Contrast with the concept of the vector is only the size of the scalar without the direction. In mathematics, the vector is often defined using a more abstract vector space (also called a linear space), and a vector concept that defines the size and direction of the physical sense requires the introduction of the norm and inner product of Euclidean space. ...