3 papers
math.CO2026
Orlik--Solomon sheaf homology of geometric lattices
Ye Liu
We associate the Orlik--Solomon sheaf with a finite geometric lattice and compute its sheaf homology. We show that this homology concentrates in top degree, admitting a convolution…
math.AG2023
Cones of effective cycles on blow ups of projective spaces along rational curves
Benjamin Gould, Yeqin Liu
In this paper we examine the cones of effective cycles on blow ups of projective spaces along smooth rational curves. We determine explicitly the cones of divisors and 1- and 2-dim…
math.GT2019
Topology of the icosidodecahedral arrangement
Ye Liu
The icosidodecahedral arrangement is introduced by M. Yoshinaga (arXiv:1902.06256) as the first known example that is a hyperplane arrangement whose Milnor fiber has torsions in fi…