AcadiaSoft, an industry provider of risk and collateral management services for the derivatives community, has acquired capital markets consulting and software company Quaternion. According to ...

Quaternions are a number system that has become increasingly useful for representing the rotations of objects in three-dimensional space and has important applications in theoretical and applied ...

Let D be a global domain whose quotient field F does not have characteristic 2, let U be a quaternion algebra over F, and let D be an order on U over D. A right D-module M which is simultaneously a ...

As in recent numbers of NATURE my views on analysis have been quoted, and not very correctly, I ask for space to state them more explicitly. I see truth in the quaternion analysis and in the vector ...