• Transvection Algorithm, Platonic Solids
  • Rendering Points in Space in Graphics
  • Converting Mouse Data to Unit Vectors
  • The Grazing Circle
  • Chen's Virtual Trackball-ACM
  • Chen's Virtual Trackball-Formulas
  • Chen's Virtual Trackball-MacTech
  • Chen's Patent
  • Shoemake's Arcball
  • Unit Vectors to Quaternion to Matrix
  • Axis-Angle (Little Rodrigues)
  • 3D-XplorMath
  • Rotation by Reflections-Initial and Bisector: Animation
  • Rotation by Reflections-Initial and Bisector
  • Rotation by Reflections-Bisector and Final: Animation
  • Rotation by Reflections-Bisector and Final
  • Rotation by Reflection by Rotation (perpective)
  • Graphics Codes
  • My First Virtual Trackball
  • B-Cell Lymphoma Pathways
  • R^n=Translations
  • SO(2)=U(1)=Plane Rotations
  • Rotation formula
  • Rotation formula consequences
  • Caspar Wessel
  • SO(2)=U(1)=The Unit Circle
  • A Half Turn...
  • Mathematical Intelligencer - TooPi-ous
  • Rotation by Reflections-Equivalence: Animation
  • Rotation by Reflections-Equivalence
  • Proof of Equivalence Theorem
  • Rodrigues-Wessel Relation, Vector Form
  • Rodrigues' Formula
  • Rodrigues' Formula
  • Rodrigues' Formula
  • Rodrigues' Formula
  • Rodrigues' Formula
  • Rodrigues' Formula
  • Olinde Rodrigues
  • Quaternion Multiplication
  • Quaternion Multiplication
  • Euler's Theorem on Rotations
  • Happy 300th Birthday
  • Misner, Thorne, Wheeler
  • Dirac
  • Math Applets
  • Belt Trick - Pure Rotation
  • Belt-Plate Full Homotopy
  • Orientation-Entanglement Full Homotopy
  • Belt-Plate Homotopy
  • Belt Trick Movie
  • Plate Trick Movie
  • Tangle Trick Movie