
handle: 11568/1074549 , 11585/851824 , 11571/1371260
We exhibit the first examples of compact orientable hyperbolic manifolds that do not have any spin structure. We show that such manifolds exist in all dimensions $n \geq 4$. The core of the argument is the construction of a compact orientable hyperbolic $4$-manifold $M$ that contains a surface $S$ of genus $3$ with self intersection $1$. The $4$-manifold $M$ has an odd intersection form and is hence not spin. It is built by carefully assembling some right angled $120$-cells along a pattern inspired by the minimum trisection of $\mathbb{C}\mathbb{P}^2$. The manifold $M$ is also the first example of a compact orientable hyperbolic $4$-manifold satisfying any of these conditions: 1) $H_2(M,\mathbb{Z})$ is not generated by geodesically immersed surfaces. 2) There is a covering $\tilde{M}$ that is a non-trivial bundle over a compact surface.
23 pages, 16 figures
nonspin, compact, hyperbolic, manifold, 120–cell, $120$–cell, compact, manifold, nonspin, compact, hyperbolic, manifold, 120-cell, General Topology (math.GN), Geometric Topology (math.GT), non spin, nonspin, 57M50, 510, Mathematics - Geometric Topology, hyperbolic, FOS: Mathematics, 57R15, 57N16, Hyperbolic manifold, Mathematics - General Topology
nonspin, compact, hyperbolic, manifold, 120–cell, $120$–cell, compact, manifold, nonspin, compact, hyperbolic, manifold, 120-cell, General Topology (math.GN), Geometric Topology (math.GT), non spin, nonspin, 57M50, 510, Mathematics - Geometric Topology, hyperbolic, FOS: Mathematics, 57R15, 57N16, Hyperbolic manifold, Mathematics - General Topology
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