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Vector Space
 Three-Dimensional Euclidean Space
  Rectangular Cartesian Coordinate System
   Rectangular Coordinate System Configuration
   Rectangular Coordinate Configuration

Vector Space

The most common types of vector spaces are a three-dimensional Euclidean space, a two-dimensional subspace, and a one-dimensional subspace. But, vector can be extended to 𝑛-dimensional space.

Three-Dimensional Euclidean Space

In a three-dimensional Euclidean space, a point can be represented in one-to-one correspondence by a real number triple with respect to a coordinate system.

Rectangular Cartesian Coordinate System

image The rectangular Cartesian coordinate system is the most common and important coordinate system used in vector manipulation. The three-dimensional space is constructed by three concurrent and mutually perpendicular lines. The set of all real numbers are one-to-one correspondence with the points of each line. The three lines are arranged with the point of concurrence corresponds to 0 and have a common unit of measurement. The three lines are called axes and are denoted as 𝑋1, 𝑋2, and 𝑋3 axes, or 𝑥, 𝑦, and 𝑧 axes. For convenient, the variables used to represent a point are usually designated by 𝑥1, 𝑥2, and 𝑥3, or 𝑥, 𝑦, and 𝑧. There always exists an ordered triple of real numbers (𝑥1,𝑥2,𝑥3) or (𝑥,𝑦,𝑧) corresponds to each point of the three-dimensional space and conversely. The triple of real number must be in correct order because the order of triple must correlate with the order of axes arrangement. Therefore both coordinate axes and triple variables are usually named in alphabetic and numeric order for convenient.

Rectangular Coordinate System Configuration

According to the arrangement of coordinate axes in space, a rectangular coordinate system can be divided into right-handed or left-handed configuration. The most commonly used rectangular coordinate system are right-handed configuration. image The configuration of a rectangular coordinate system is determined by the arrangement of positive axes. Consider a vector from origin 𝑂(0,0,0) to any point 𝐴(𝑥,𝑦,𝑧) in the positive region. The rectangular coordinate system is said to be right-handed configuration if the order of coordinate axes arrangement following the order of coordinate component is in the direction of right hand fingers with the thumb pointing along with the vector 𝑂𝐴. image Similarly, consider a vector from origin 𝑂(0,0,0) to any point 𝐴(𝑥,𝑦,𝑧) in the positive region. The rectangular coordinate system is said to be left-handed configuration if the order of coordinate axes arrangement following the order of coordinate component is in the direction of left hand fingers with the thumb pointing along with the vector 𝑂𝐴.

Rectangular Coordinate Configuration

Rectangular Coordinate ConfigurationRight-Handed Rectangular Coordinate System : A rectangular Cartesian coordinate system is said to be right-handed only if the positive coordinate axes observed from outside to the origin is arranged following the order of coordinates in counterclockwise arrangement as the right hand fingers.
Left-Handed Rectangular Coordinate System : A rectangular Cartesian coordinate system is said to be left-handed only if the positive coordinate axes observed from outside to the origin is arranged following the order of coordinates in clockwise arrangement as the right hand fingers.

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ID: 200201002 Last Updated: 10/2/2020 Revision: 0 Ref:

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References

  1. Robert C. Wrede, 2013, Introduction to Vector and Tensor Analysis
  2. Daniel Fleisch, 2012, A Student’s Guide to Vectors and Tensors
  3. Howard Anton, Chris Rorres, 2010, Elementary Linear Algebra: Applications Version
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