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.
Rhombus Tilings of a Hexagon with Three Fixed Border Tiles
✍ Scribed by Theresia Eisenkölbl
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 195 KB
- Volume
- 88
- Category
- Article
- ISSN
- 0097-3165
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✦ Synopsis
We compute the number of rhombus tilings of a hexagon with sides a, b, c, a, b, c with three fixed tiles touching the border. The particular case a=b=c solves a problem posed by Propp. Our result can also be viewed as the enumeration of plane partitions having a rows and b columns, with largest entry c, with a given number of entries equal to c in the first row, a given number of entries equal to 0 in the last column, and a given bottom-left entry.
📜 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 ␣ , , ␥ is the number of plane partitions inside the ␣ =  = ␥ box. The proof uses nonintersecting lattice paths and a new identit