3 papers
math.GT2023
Legendrian Negative Torus Knots in Universally Tight Lens Spaces
Han Zhang
The main theorem characterizes all Legendrian negative torus knots in universally tight lens space in the sense of coarse equivalence. Together with Onaran's results on Legendrian…
math.GT2022
A Construction of Rational Seifert Surface in Lens Space
Han Zhang
In this note, I give a method to construct rational Seifert surface for those smooth or piece-wise linear oriented knots in Lens space. I assume that the oriented knot has a regula…
math.DS2021
Nondivergence on homogeneous spaces and rigid totally geodesics
Han Zhang, Runlin Zhang
Let be the quotient of a semisimple Lie group by an arithmetic lattice. We show that for reductive subgroups of that is large enough, the orbits of on inter…