2 papers
math.KT2026
The 2-torsion in the Farrell--Tate cohomology of PSL(4,Z), and torsion subcomplex reduction via discrete Morse theory
Alexander D. Rahm, Anh Tuan Bui, Matthias Wendt
In the present paper, we use discrete Morse theory to provide a new implementation of torsion subcomplex reduction for arithmetic groups. This leads both to a simpler algorithm as…
stat.ML2025
Conditional Multidimensional Scaling with Incomplete Conditioning Data
Anh Tuan Bui
Conditional multidimensional scaling seeks for a low-dimensional configuration from pairwise dissimilarities, in the presence of other known features. By taking advantage of availa…