Abstract: Quaternion Kalman filters (QKFs) are designed for state estimation in three-dimensional (3-D) space. To simplify initialization, this paper focuses on the quaternion information filter (QIF) ...

Abstract: In this letter, we propose and demonstrate a method for integration of rotations using nonunit quaternions. Unit quaternions are commonly used to represent rotation, in which case the ...

Sour cherry and walnut Mandelbrot your mother will rave about Every day until Christmas, we’re baking a recipe from the Star’s archives. Today, Eden simmers pomegranate juice within an inch of its ...

Limited zoom, CPU rendering. Drag to move around, and pinch to zoom in and out. Tap the Julia button in the toolbar to enable Julia mode. While the Julia window is visible, you can still drag and zoom ...

Ganja.js is a Geometric Algebra code generator for javascript. It generates Clifford algebras and sub-algebras of any signature and implements operator overloading and algebraic constants.

Earlier this month the Mathematics Institute at Uppsala University hosted a conference called Categorification in Algebra and Topology, clearly a theme close to our collective heart. As yet there are ...