Abraham Ungar

Abraham Ungar (North Dakota State University, ND) is Professor of Mathematics at North Dakota State University. He specializes in the areas of linear algebra, geometry and physics. He has published seven books and over 100 papers, mostly in indexed journals.
Ebooks
Beyond the Einstein Addition Law and its Gyroscopic Thomas Precession: The Theory of Gyrogroups and Gyrovector Spaces
Book 117
Beyond Pseudo-Rotations in Pseudo-Euclidean Spaces
Hyperbolic Triangle Centers: The Special Relativistic Approach
Book 166
Analytic Hyperbolic Geometry And Albert Einstein's Special Theory Of Relativity
Beyond the Einstein Addition Law and its Gyroscopic Thomas Precession: The Theory of Gyrogroups and Gyrovector Spaces
Book 117
Analytic Hyperbolic Geometry: Mathematical Foundations And Applications
Barycentric Calculus In Euclidean And Hyperbolic Geometry: A Comparative Introduction
Analytic Hyperbolic Geometry in N Dimensions: An Introduction
A Gyrovector Space Approach to Hyperbolic Geometry
Analytic Hyperbolic Geometry And Albert Einstein's Special Theory Of Relativity (Second Edition)