Mathematics Problem Archive

Do there exist seven planar points in general position—no three collinear and no four concyclic—such that every pairwise distance is an integer?...

Determine all single sided (resp. double sided) sequences that are pattern Sturmian....

Given a C∞ metric in a neighborhood of a point in a 2-dimensional Riemannian manifold, does there exist an isometric embedding of some neighborhood of...