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arXiv 1306.1403math.CO
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六边形的对称中心菱形镶嵌的Enumeration

Enumeration of symmetric centered rhombus tilings of a hexagon

Anisse Kasraoui, Christian Krattenthaler

摘要:

一个六边形的菱形镶嵌被称为居中,如果它包含中心菱形。我们计算了边长为$a, b, a, a, b, a$且居中的六边形的垂直对称菱形镶嵌的个数。当$a$为奇数而$b$为偶数时,这表明$a, b, a, a, b, a$六边形的随机垂直对称菱形平铺居中的概率与$a, b, a, a, b, a$六边形的随机菱形平铺居中的概率完全相同。这也导致了一个因式分解定理的数量的所有菱形镶嵌的六边形是中心。

英文摘要:

A rhombus tiling of a hexagon is said to be centered if it contains the central lozenge. We compute the number of vertically symmetric rhombus tilings of a hexagon with side lengths $a, b, a, a, b, a$ which are centered. When $a$ is odd and $b$ is even, this shows that the probability that a random vertically symmetric rhombus tiling of a $a, b, a, a, b, a$ hexagon is centered is exactly the same as the probability that a random rhombus tiling of a $a, b, a, a, b, a$ hexagon is centered. This also leads to a factorization theorem for the number of all rhombus tilings of a hexagon which are centered.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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