Geodesic
Triple point numbers of surface-links and symmetric quandle cocycle invariants
Oshiro, Kanako1
1Department of Mathematics, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
Algebraic and Geometric Topology, Tome 10 (2010) no. 2, pp. 853-865
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For any positive integer n, we give a 2–component surface-link F = F1 ∪ F2 such that F1 is orientable, F2 is non-orientable and the triple point number of F is equal to 2n. To give lower bounds of the triple point numbers, we use symmetric quandle cocycle invariants.

DOI : 10.2140/agt.2010.10.853
Keywords: non-orientable surfaces, surface-links, symmetric quandles, triple point numbers

Oshiro, Kanako  1

1 Department of Mathematics, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan 
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Oshiro, Kanako. Triple point numbers of surface-links and symmetric quandle cocycle invariants. Algebraic and Geometric Topology, Tome 10 (2010) no. 2, pp. 853-865. doi: 10.2140/agt.2010.10.853

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