4 citations · 5 across the 5 of their papers we have counts for
5 papers
Rational cubic fourfolds in Hassett divisors
Song Yang, Xun Yu
We prove that every Hassett's Noether-Lefschetz divisor of special cubic fourfolds contains a union of three codimension-two subvarieties, parametrizing rational cubic fourfolds, i…
McKay correspondence and new Calabi-Yau threefolds
Xun Yu
In this note, we consider crepant resolutions of the quotient varieties of smooth quintic threefolds by Gorenstein group actions. We compute their Hodge numbers via McKay correspon…
Automorphism groups of smooth quintic threefolds
Keiji Oguiso, Xun Yu
We study automorphism groups of smooth quintic threefolds. Especially, we describe all the maximal ones with explicit examples of target quintic threefolds. There are exactly …
On Castelnuovo theory and non-existence of smooth isolated curves in quintic threefolds
Xun Yu
We give some necessary conditions for a smooth irreducible curve to be isolated in a smooth quintic threefold, and also find a lower bound for $h^1(\mathcal…
On smooth and isolated curves in general complete intersection Calabi-Yau threefolds
Xun Yu
Recently Knutsen found criteria for the curves in a complete linear system on a smooth surface in a nodal K-trivial threefold to deform to a scheme of fin…