The study of equiangular lines and distance sets has long captivated mathematicians through its elegant blend of geometry, algebra and combinatorics. Equiangular lines – sets of lines in Euclidean ...

Equiangular tight frames (ETFs) have emerged as a central construct in modern applied and theoretical mathematics, providing optimal arrangements of lines in high-dimensional Hilbert spaces. By ...

Equiangular lines are an elemental part of geometry. Mathematicians have discovered a tighter limit on the number of such lines that exist in every dimension. Imagine a set of many lines as in a dream ...