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  1. 如何形象地理解四元数? - 知乎

    如何形象地理解四元数? 关于 quaternion 的资料(包括网络教程与书籍)已经看过很多,但大脑内无法形成对 quaternion 的形象理解。 请问是否要对群论、四维赋范… 显示全部 关注者 …

  2. 四元数和旋转 (Quaternion & rotation)

    四元数 (quaternion)可以看作中学时学的复数的扩充,它有三个虚部。 形式如下: ,可以写成 具有如下性质: 设 , ,则 3.2 共 轭四元数 一个四元数 的共轭 (用 表示)为 一个四元数和它的共 …

  3. How can one intuitively think about quaternions?

    Oct 19, 2010 · Here is the intuitive interpretation of this. Given a particular rotation axis $\omega$, if you restrict the 4D quaternion space to the 2D plane containing $ (1,0,0,0)$ and $ …

  4. Real world uses of Quaternions? - Mathematics Stack Exchange

    The quaternion algebra shows there as a way of disentangling two Alamouti coded signals transmitted by a pair of antennas. The advantages come from the fact that even if the signal …

  5. 四元数 (Quaternions)

    数学背景 四元数变换 (Quaternion Transforms) 连接两个四元数 矩阵和四元数相互转换 球面线性插值 从一个向量旋转到另一个向量)Rotation from One Vector to Another 1 数学背景 …

  6. Concise description of why rotation quaternions use half the angle

    Aug 5, 2015 · The idea of Hamilton was to find some generalization of this formula for three-dimensional rotations. The quaternions can do such a generalization identifying a $3D$ -vector …

  7. linear algebra - Conversion of rotation matrix to quaternion ...

    Aug 11, 2014 · One of the quaternion elements is guaranteed to have a magnitude of greater than 0.5 and hence a squared value of 0.25. We can use this to determine the "best" set of …

  8. Understanding quaternions - Mathematics Stack Exchange

    May 27, 2020 · Of course adding two quaternions gives a quaternion, so algebraically this is clear. I don't really think it's clear geometrically, however, and with good reason: this is a very …

  9. Combining rotation quaternions - Mathematics Stack Exchange

    Feb 3, 2017 · If I combine 2 rotation quaternions by multiplying them, lets say one represents some rotation around x axis and other represents some rotation around some arbitrary axis. …

  10. complex numbers - What exactly does a quaternion represent ...

    This is a slightly complicated question but put simply. C is the field over R such that it is of the form (a+bi) where (a,b) are in R. The quaternion is a further extension where numbers are of …