Lei Song

activity

20132026

most citedSingularities of secant varieties

2 citations · 5 across the 14 of their papers we have counts for

collaborators

Showing 2015Show all

2 papers · 1 filter

math.AG2015

On the projective normality of double coverings over a rational surface

Biswajit Rajaguru, Lei Song

We study the projective normality of a minimal surface $X$ which is a ramified double covering over a rational surface $S$ with $dim ∣ - K_{S} ∣ \geq 1$ . In particular Horikawa surfaces,…

math.AG2015★ 2 cited

Singularities of secant varieties

Chih-Chi Chou, Lei Song

We study the singularities of the secant variety $Σ (X, L)$ associated to a smooth variety $X$ embedded by a sufficiently positive adjoint bundle $L$ . We show that $Σ (X, L)$ is always…