No symplectic-Lipschitz structures on $S^{2n \geq 4}$
Du\v{s}an Joksimovi\'c

TL;DR
This paper proves that spheres of dimension 4 and higher cannot have symplectic-Lipschitz structures, due to topological obstructions related to their cohomology groups.
Contribution
It establishes a topological obstruction to the existence of symplectic-Lipschitz structures on spheres of dimension 4 and higher.
Findings
Spheres $S^{2n}$ with $n extgreater 1$ do not admit symplectic-Lipschitz structures.
Manifolds with such structures must have non-vanishing even-degree cohomology groups.
The result links symplectic-Lipschitz structures to topological cohomology properties.
Abstract
We prove that a closed manifold which admits a symplectic-Lipschitz structure has non-vanishing even-degree cohomology groups with real coefficients. In particular, spheres do not admit symplectic-Lipschitz structures.
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Taxonomy
TopicsGeometric and Algebraic Topology · Geometry and complex manifolds · Geometric Analysis and Curvature Flows
