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Bollobas和Riordan拓扑Tutte多项式的一个配方定理

A recipe theorem for the topological Tutte polynomial of Bollobas and Riordan

Joanna A. Ellis-Monaghan, Irasema Sarmiento

摘要:

在[A polynomial invariant of graphs on可定向曲面,Proc. Lond.数学会,III Ser.83,No.3,513-531(2001)]和[A polynomial of graphs on surfaces,Math.Ann.323,81-96(2002)]中,Bollobas和Riordan将经典的Tutte多项式推广到嵌入在表面中的细胞图,即带状图,从而编码经典的Tutte多项式未捕获的拓扑信息。我们为他们的新拓扑Tutte多项式R(G)提供了一个“配方定理”。然后,我们通过一个中间图的结构,R(G)的广义转移多项式Q(G),从而扩展经典Tutte多项式和马丁,或电路划分,带状图多项式之间的关系。我们利用这个关系证明了R(G)的一个对偶性质,它对有向和无向带状图都成立。我们通过将Chumutov和Pak [The Kauffman bracket and the Bollobas-Riordan polynomial of ribbon graphs,Moscow Mathematical Journal 7(3)(2007)409-418]的结果用于R(G)和Q(R)之间关系的上下文中的虚拟链接来得出结论。

英文摘要:

In [A polynomial invariant of graphs on orientable surfaces, Proc. Lond. Math. Soc., III Ser. 83, No. 3, 513-531 (2001)] and [A polynomial of graphs on surfaces, Math. Ann. 323, 81-96 (2002)], Bollobas and Riordan generalized the classical Tutte polynomial to graphs cellularly embedded in surfaces, i.e. ribbon graphs, thus encoding topological information not captured by the classical Tutte polynomial. We provide a `recipe theorem' for their new topological Tutte polynomial, R(G). We then relate R(G) to the generalized transition polynomial Q(G) via a medial graph construction, thus extending the relation between the classical Tutte polynomial and the Martin, or circuit partition, polynomial to ribbon graphs. We use this relation to prove a duality property for R(G) that holds for both oriented and unoriented ribbon graphs. We conclude by placing the results of Chumutov and Pak [The Kauffman bracket and the Bollobas-Riordan polynomial of ribbon graphs, Moscow Mathematical Journal 7(3) (2007) 409-418] for virtual links in the context of the relation between R(G) and Q(R).

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