Sho Tanimoto

Degree two unirational parametrizations over the real field

We study degree two unirational parameterizations of geometrically rational surfaces over the real field.

Campana rational connectedness and weak approximation

Campana introduced a notion of Campana rational connectedness for Campana orbifolds.Given a Campana fibration over a complex curve, we prove that a version of weak approximation for Campana sections holds at places of good reduction when the general fiber satisfies a slightly str...