2 papers
math.GR2025
Quasi-isometric embeddings of Ramanujan complexes
Hyein Choi
Ramanujan complexes were defined as high dimensional analogues of the optimal expanders, Ramanujan graphs. They were constructed as quotients of the Euclidean building (also called…
physics.app-ph2024
Refining microstructures in additively manufactured Al/Cu gradients through TiB inclusions
Michael J. Abere, Hyein Choi, Levi Van Bastian +6
The additive manufacture of compositionally graded Al/Cu parts by laser engineered net shaping (LENS) is demonstrated. The use of a blue light build laser enabled deposition on a C…