https://**en.wikipedia.org**/wiki/**Quaternion**

A unit **quaternion** is a **quaternion** of norm one. Dividing a non-zero **quaternion** q by its norm produces a unit **quaternion** Uq called the versor of q: Every **quaternion** has ...

https://**en.wikipedia.org**/wiki/**Quaternions_and_spatial_rotation**

Unit **quaternions**, also known as versors, provide a convenient mathematical notation for representing orientations and rotations of objects in three dimensions.

**dictionary.reference.com**/browse/**quaternion**

The **quaternion** was a gathering of four sheets of vellum, each folded once; thus forming sixteen pages.

**www.cprogramming.com**/tutorial/3d/**quaternions**.html

Learn what **quaternions** are, and how to use **quaternion** multiplication to perform perfect 3 dimensional rotations.

mathworld.wolfram.com/**Quaternion**.html

The **quaternion** is implemented as **Quaternion**[a, b, c, d] in the Wolfram Language package **Quaternions**` where however , , , and must be explicit real numbers.

**www.merriam-webster.com**/dictionary/**quaternion**

Middle English quaternyoun, from Late Latin **quaternion**-, quaternio, from Latin quaterni four each, from quater four times; akin to Latin quattuor four — more at four

**docs.unity3d.com**/ScriptReference/**Quaternion**

They are compact, don't suffer from gimbal lock and can easily be interpolated. **Unity** internally uses **Quaternions** to represent all rotations.

www.euclideanspace.com/maths/algebra/realNormedAlgebra/**quaternions**/...

The **quaternion** 'i' represents a rotation of 180 degrees about the x axis, the **quaternion** 'j' represents a rotation of 180 degrees about the y axis, the **quaternion** ...

https://www.**quaternion**.com/software-solutions

**The Contemporary Industry Standard**. Cross asset class and industrial scale . **Quaternion** Risk Engine. The **Quaternion** Risk Engine (QRE) ...

https://www.**quaternion**.com

Transparent Analytics based on Open Source Pricing Technology. Consulting at the cutting edge helps us improve the **Quaternion** Risk Engine to help it meet upcoming ...