The quantum sl(3) invariants of cubic bipartite planar graphs

Structure of the flow and Yamada polynomials of cubic graphs

We establish a quadratic identity for the Yamada polynomial of ribbon cubic graphs in 3-space, extending the Tutte golden identity for planar cubic graphs. An application is given to the structure of the flow polynomial of cubic graphs at zero. The golden identity for the flow polynomial is conjectured to characterize planarity of cubic graphs, and we prove this conjecture for a certain infinite family of non-planar graphs. Further, we establish exponential growth of the number of chromatic polynomials of planar triangulations, answering a question of D. Treumann and E. Zaslow. The structure u…

Differential algebra of cubic planar graphs

In this article we associate a combinatorial differential graded algebra to a cubic planar graph G. This algebra is defined combinatorially by counting binary sequences, which we introduce, and several explicit computations are provided. In addition, in the appendix by K. Sackel the F(q)-rational points of its graded augmentation variety are shown to coincide with (q+1)-colorings of the dual graph.

对称表示中二分HOMFLY多项式的平面分解

Planar decomposition of bipartite HOMFLY polynomials in symmetric representations

本文将二分纽结图HOMFLY多项式的平面分解推广到（反）对称着色情形，通过投影恢复平面性，超越树状演算，并给出计算实例，揭示二分演化与反平行通道中R-矩阵特征值平方的分解。

Interior polynomial for signed bipartite graphs and the HOMFLY polynomial

The interior polynomial is an invariant of bipartite graphs, and a part of the HOMFLY polynomial of a special alternating link coincides with the interior polynomial of the Seifert graph of the link. We extend the interior polynomial to signed bipartite graphs, and we show that, in the planar case, it is equal to a part of the HOMFLY polynomial of a naturally associated link. We also establish some other, more basic properties of this new notion. This leads to new identities involving the original interior polynomial.

二部纽结与链环的HOMFLY多项式的平面分解

Planar decomposition of the HOMFLY polynomial for bipartite knots and links

本文提出了一种适用于由反平行锁缠结构成的二部纽结图的全新平面分解方法，将Kauffman括号理论从sl(2)推广到任意sl(N)，从而为HOMFLY多项式的计算提供了与树状演算互补的新途径，并开辟了通向同调技术的新方向。