English

Stable almost complex structures on certain $10$-manifolds

Differential Geometry 2019-08-27 v3 Algebraic Topology Geometric Topology

Abstract

Let MM be a 1010-dimensional closed oriented smooth manifold. Set DM:={xH2(M;Z/2)x2+w2(M)xρ2(TH4(M;Z))}.\mathcal{D}_{M} := \{ x \in H^{2}(M; \Z/2) \mid x^{2} + w_{2}(M) x \in \rho_{2} ( TH^{4}(M;\Z) ) \}. Suppose that H1(M;Z)=0H_{1}(M;\Z)=0 and DMρ2(H2(M;Z))\mathcal{D}_{M} \subset \rho_{2}( H^{2}(M; \Z) ). Then the necessary and sufficient conditions for MM to admit a stable almost complex structure are determined in terms of the characteristic classes and cohomology ring of MM.

Keywords

Cite

@article{arxiv.1808.04534,
  title  = {Stable almost complex structures on certain $10$-manifolds},
  author = {Huijun Yang},
  journal= {arXiv preprint arXiv:1808.04534},
  year   = {2019}
}

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11 pages