Showing 2025Show all
3 papers · 1 filter
math.GT2025
Contact surgery distance
Marc Kegel, Isacco Nonino, Monika Yadav
In this article, we define the contact surgery distance of two contact 3-manifolds and as the minimal number of contact surgeries needed to obtain from $(…
math.GT2025
Non-fibered strongly quasipositive links and tightness
Isacco Nonino, Miguel Orbegozo Rodriguez
It is well known that for fibered links in being strongly quasipositive and supporting a tight contact structure are equivalent notions (arXiv:math/0509499). In this…
math.GT2025
Pseudo-isotopy versus isotopy for homeomorphisms of 4-manifolds
Daniel Galvin, Isacco Nonino
We define obstructions which obstruct topological pseudo-isotopies from being isotopic to isotopies in dimension four. These match the smooth obstructions of Hatcher-Wagoner for sm…