16 citations · 53 across the 12 of their papers we have counts for
12 papers
Maximally nodal sextic surfaces and linear determinantal representations
Yonghwa Cho
We prove that every maximally nodal sextic surface (with 65 nodes) contains a symmetric half-even set of nodes of cardinality 35. It follows t…
Counting on primary Burniat surfaces
Yonghwa Cho
We study the cohomology of divisors on a Burniat surface with . We provide an algorithm for computing the cohomology groups of arbitrary divisors on . As an applica…
Positivity of double point divisors
Yonghwa Cho, Jinhyung Park
The non-isomorphic locus of a general projection from an embedded smooth projective variety to a hypersurface moves in a linear system of an effective divisor which we call the dou…
Orthogonal exceptional collections from -Gorenstein degeneration of surfaces
Yonghwa Cho
We consider a surface that admits a -Gorenstein degeneration to a cyclic quotient singularity . Under several technical assumptions, we constru…
Ulrich bundles on intersections of two 4-dimensional quadrics
Yonghwa Cho, Yeongrak Kim, Kyoung-Seog Lee
In this paper, we investigate the existence of Ulrich bundles on a smooth complete intersection of two -dimensional quadrics in by two completely different methods…
On derived categories of nonminimal Enriques surfaces
Yonghwa Cho
By Orlov's formula, the derived category of blow up must contain the original variety as a semiorthogonal component. This arises an interesting question: does there exist a variety…