In Sec-tion 2, we discuss special relativity from a historical and pedagogical viewpoint, SPECIAL RELATIVITY, EINSTEIN VELOCITY ADDITION, AND GYROGROUPS: AN INTRODUCTION. Some ten years before the first review of the general theory of relativity, Einstein published his famous paper On the Electrodynamics of Moving Bodies (Einstein). That paper introduced what later became to be called the special theory of relativity v By A. EINSTEIN JIt is known that Maxwell’s electrodynamics—as usually unders