Around 1900, mathematicians across the world acquired physical models, both to illustrate concepts they taught and to demonstrate their familiarity with new ideas. They frequently purchased models ...

Surfaces that can be represented by equations of degree two – spheres, ellipsoids, paraboloids, hyperboloids, and cones – have long been discussed in courses on descriptive and solid geometry, ...

Roseline Delisle, a Los Angeles-based ceramic artist known for her elegant sculpture and strong geometric design, has died. She was 50. Delisle died Wednesday morning at St. John’s Hospital in Santa ...