OPEN
These posts examine open problems in mathematical research, their history, and why their solution would have an impact on progress in mathematics.
SubRiemannian Geometry: Two Open Problems and One Falling Cat
August 16, 2024
AUTHOR: R. Montgomery. This open problem review examines two open and closely related problems in subRiemannian geometry. These are introduced through the problem of the falling cat.
Identities for sin x
July 17, 2024
AUTHOR: P. Kuchment and S. Lvin. This open problem review examines some mysterious identities for sin(x) and asks for a connection to known theories.