Giancarlo Urzúa

Chern slopes of simply connected complex surfaces of general type are dense in (2,3)

We prove that for any number

A simply connected numerical Campedelli surface with an involution

r

The Craighero–Gattazzo surface is simply connected

in

KSBA surfaces with elliptic quotient singularities, π1 = 1, pg = 0, and K2 = 1, 2

[2,3]

Characterization of Kollár surfaces

, there are spin (resp. non-spin minimal) simply connected complex surfaces of general type

Arrangements of curves and algebraic surfaces

X

On line arrangements with applications to 3-nets

with

Identifying neighbors of stable surfaces

c_1^2(X)/c_2(X)

Milnor fibers and symplectic fillings of quotient surface singularities

arbitrarily close to

Riemann surfaces of genus g with an automorphism of order p prime and p > g

r