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  1. Quaternion - Wikipedia

    In mathematics, the quaternion number system extends the complex numbers. Quaternions were first described by the Irish mathematician William Rowan Hamilton in 1843 [1][2] and applied …

  2. Quaternion -- from Wolfram MathWorld

    The quaternions are members of a noncommutative division algebra first invented by William Rowan Hamilton.

  3. On October 16th, 1843, while walking with his wife to a meeting of the Royal Society of Dublin, Hamilton discovered a 4-dimensional division algebra called the quaternions:

  4. 1.2: Quaternions - Mathematics LibreTexts

    Oct 10, 2021 · The quaternions, discovered by William Rowan Hamilton in 1843, were invented to capture the algebra of rotations of 3-dimensional real space, extending the way that the …

  5. Quaternion | Rotations, Hypercomplex Numbers, Algebra

    Nov 12, 2025 · Quaternion, in algebra, a generalization of two-dimensional complex numbers to three dimensions. Quaternions and rules for operations on them were invented by Irish …

  6. Quaternions: What Are They, and Do We Really Need Them?

    Aug 20, 2022 · A quaternion contains four components and it is expressed in the form: a+bi+cj+dk, where a, b, c, and d are real numbers, while i, j, and k are unconventional …

  7. Quaternions: Understanding 3D Rotations - Simple Science

    Jul 25, 2025 · Quaternions are numbers made up of four parts: one real part and three imaginary parts. They can be written in this form: Here, a is the real part, and b, c, and d are the …

  8. How Do Quaternions Work? - SageMotion

    Apr 24, 2023 · The most straight-forward way to understand and compute quaternions is from the angle-axis 3D orientation representation. So, we present the math below for how this is done …

  9. Your Guide to Quaternions - Libbs' Lab

    Jul 4, 2023 · A quaternion will cancel out with its Inverse, resulting in the Identity quaternion. Thinking in terms of Axis and Angles, you can view it as negating the axis to point in the …

  10. QUATERNION Definition & Meaning - Merriam-Webster

    The meaning of QUATERNION is a set of four parts, things, or persons.