Mathematicians of the 18th century studied surfaces in 3-space using unit normal fields, local coordinates,…
Tag: geometry
Symmetry and Groups
Symmetry Natural forms such as snowflakes, sea shells, water droplets, mineral crystals, and faces exhibit…
Projective Geometry
Rays and Perspective Imagine a flat floor extending to infinity in all directions and covered…
Compound Circular Motion
Circles and Parametrization The blog post about circles, trigonometry, and groups defined a circle to…
Conformal Torus Knots
In this post we’ll meet a staple at Differential Geometry: Flat tori in four-space, and…