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Math
Homogeneous Coordinates
Homogeneous coordinates are a way of representing N-dimensional coordinates with N+1 numbers in order to make computation possible in projective space.
Euler's Equation
Euler equation shows a deep relationship between trigonometric functions and the complex exponential function.
Quaternion
Quaternion is a geometrical operator to represent the relationship between two vectors in 3D space. Quaternion requires 4 parameters; one real number and 3 imaginary numbers.
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