Johannes Ebert

collaborators

2 papers

math.AT2025

Cancellation properties for exotic $4$ -dimensional positive scalar curvature metrics

Johannes Ebert

Ruberman constructed families ${g_{n} ∣ n \in N} \subset R^{+} (M)$ of metrics of positive scalar curvature on certain $4$ -manifolds which are concordant but li…

math.GT2024

Tautological classes and higher signatures

Johannes Ebert

For a bundle of oriented closed smooth $n$ -manifolds $π : E \to X$ , the tautological class $κ_{L_{k}} (E) \in H^{4 k - n} (X; Q)$ is defined by fibre integration of the…

Cancellation properties for exotic 4-dimensional positive scalar curvature metrics

Tautological classes and higher signatures

Cancellation properties for exotic $4$ -dimensional positive scalar curvature metrics