2 papers
math.GT2025
Geometric Kernels of Proper Maps Between Non-Compact Surfaces
Sumanta Das
A map between connected -manifolds has a geometric kernel if it sends a non-contractible simple loop to a null-homotopic loop. While every non--injective map between compa…
math.GT2025
-injective proper maps between non-compact surfaces
Sumanta Das
We classify all -injective proper maps between non-compact surfaces up to proper homotopy.