2024/09/16 by Michael Freedman, Freedman, Michael H. · 1 citation
Mathematics · #Geometric and Algebraic Topology #Advanced Operator Algebra Research #Homotopy and Cohomology in Algebraic Topology
paper · pdf · doi:10.48550/arxiv.2409.09983
A closed 3-manifold M may be described up to some indeterminacy by a Heegaard diagram D. The question "Does M smoothly embed in ℝ4?'' is equivalent to a property of D which we call doubly unlinked (DU). This perspective leads to an enhancement of Hantzsche's embedding obstruction.