Michael Freedman

collaborators

2 papers

math.GT2026

Normal-Euler excess for disjoint nonorientable surfaces in a closed $4$ -manifold

Bennett Chow, Michael Freedman

Let $M$ be a closed connected oriented topological $4$-manifold. We prove that if $F_1,\dots,F_r\subset M$ are pairwise disjoint connected locally flat topologically embedded…

math.GT2025

A triple torsion linking form and 3-manifolds in $S^{4}$

Michael Freedman, Vyacheslav Krushkal

Given a rational homology 3-sphere $M$ , we introduce a triple linking form on $H_{1} (M; Z)$ , defined when the classical torsion linking pairing of three homology classes van…

Normal-Euler excess for disjoint nonorientable surfaces in a closed 4-manifold

A triple torsion linking form and 3-manifolds in S4

Normal-Euler excess for disjoint nonorientable surfaces in a closed $4$ -manifold

A triple torsion linking form and 3-manifolds in $S^{4}$