We compute the number of rhombus tilings of a hexagon with side lengths a, b, c, a, b, c which contain the central rhombus and the number of rhombus tilings of a hexagon with side lengths a, b, c, a, b, c which contain the ``almost central'' rhombus above the centre.
The Number of Rhombus Tilings of a Symmetric Hexagon which Contain a Fixed Rhombus on the Symmetry Axis, II
β Scribed by M. Fulmek; C. Krattenthaler
- Book ID
- 102966569
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 554 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0195-6698
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β¦ Synopsis
We compute the number of rhombus tilings of a hexagon with side lengths N , M, N , N , M, N , with N and M having the same parity, which contain a particular rhombus next to the center of the hexagon. The special case N = M of one of our results solves a problem posed by Propp. In the proofs, Hankel determinants featuring Bernoulli numbers play an important role.
π SIMILAR VOLUMES
We compute the number of all rhombus tilings of a hexagon with sides a, b q 1, c, a q 1, b, c q 1, of which the central triangle is removed, provided a, b, c , where B β£ , β€, β₯ is the number of plane partitions inside the β£ = β€ = β₯ box. The proof uses nonintersecting lattice paths and a new identit