English

Non-orientable fundamental surfaces in lens spaces

Geometric Topology 2008-09-11 v1

Abstract

We give a concrete example of an infinite sequence of (pn,qn)(p_n, q_n)-lens spaces L(pn,qn)L(p_n, q_n) with natural triangulations T(pn,qn)T(p_n, q_n) with pnp_n taterahedra such that L(pn,qn)L(p_n, q_n) contains a certain non-orientable closed surface which is fundamental with respect to T(pn,qn)T(p_n, q_n) and of minimal crosscap number among all closed non-orientable surfaces in L(pn,qn)L(p_n, q_n) and has n2n-2 parallel sheets of normal disks of a quadrilateral type disjoint from the pair of core circles of L(pn,qn)L(p_n, q_n). Actually, we can set p0=0,q0=1,pk+1=3pk+2qkp_0=0, q_0=1, p_{k+1}=3p_k+2q_k and qk+1=pk+qkq_{k+1}=p_k+q_k.

Keywords

Cite

@article{arxiv.0809.1700,
  title  = {Non-orientable fundamental surfaces in lens spaces},
  author = {Chuichiro Hayashi and Miwa Iwakura},
  journal= {arXiv preprint arXiv:0809.1700},
  year   = {2008}
}

Comments

19 pages, 14 figures

R2 v1 2026-06-21T11:18:38.787Z