hsfzLZH1's Homepage
2026
- The same homotopy type can hide different aspherical four-manifolds
- Chromatic splitting: the pieces can fit without splitting apart
- A finite complex whose third dimension cannot be removed
- How many isolated oscillations can a polynomial system sustain
- One observable whose time shifts describe an entire smooth system
- Does mixing two observations force mixing any finite number
- Area-visible chaos in the standard map at every large parameter
- A full collar of billiard caustics forces an ellipse
- Fractal dimension from the information that exact overlaps leave behind
- An irrational angle makes a triangular billiard weakly mixing