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arXiv 0903.1373math.CO
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迹图、矩阵子式和行列式恒等式

Trace Diagrams, Matrix Minors, and Determinant Identities

Steven Morse, Elisha Peterson

摘要:

迹图是结构化的图,其边由矩阵标记。每个图都有一个特定的多线性函数的解释。我们提供了一个严格的组合定义,这些图使用的概念签署图着色,并证明它们可以有效地表示在矩阵未成年人。利用这一观点,我们给出了几个标准行列式公式的新证明和Jacobi行列式定理的一个新推广。

英文摘要:

Trace diagrams are structured graphs with edges labeled by matrices. Each diagram has an interpretation as a particular multilinear function. We provide a rigorous combinatorial definition of these diagrams using a notion of signed graph coloring, and prove that they may be efficiently represented in terms of matrix minors. Using this viewpoint, we provide new proofs of several standard determinant formulas and a new generalization of the Jacobi determinant theorem.

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