PDF) Quarternions and the Four Square Theorem

The Four Square Theorem was proved by Lagrange in 1770: ev- ery positive integer is the sum of at most four squares of positive integers, i.e. n = A2 +B2 +C2 +D2;A;B;C;D 2 Z An interesting proof is presented here based on Hurwitz integers, a subset

Number Theory Revealed: A Masterclass

The Quaternion LMS Algorithm for Adaptive Filtering of Hypercomplex Processes – topic of research paper in Electrical engineering, electronic engineering, information engineering. Download scholarly article PDF and read for free on CyberLeninka

Lagrange's Four-Square Theorem Learn and Solve Theorem Questions

PDF) Quarternions and the Four Square Theorem

Quaternion algebra

PDF] Abelian subgroup structure of square complex groups and arithmetic of quaternions

Sensors, Free Full-Text

Quaternion - Wikiwand

On Quaternions and Octonions, by John Conway and Derek Smith

What are your favorite results in mathematics that are also especially inelegant, ugly, or irritating to look at? : r/math

References - State Estimation for Robotics

Visualizing Quaternions by Hanson, Andrew J.

On Real Matrices to Least-Squares g-Inverse and Minimum Norm g-Inverse of Quaternion Matrices

Hamilton's quaternions and 3D rotation with Python – Meccanismo Complesso