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A Geometric Bijection forxy-Convex Curves and Convex Polyominoes

✍ Scribed by A. A. Panov

Book ID
111598116
Publisher
SP MAIK Nauka/Interperiodica
Year
2003
Tongue
English
Weight
151 KB
Volume
74
Category
Article
ISSN
0001-4346

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πŸ“œ SIMILAR VOLUMES

A bijection between directed column-conv
A bijection between directed column-convex polyominoes and ordered trees of height at most three
✍ Emeric Deutsch; Helmut Prodinger πŸ“‚ Article πŸ“… 2003 πŸ› Elsevier Science 🌐 English βš– 221 KB

A bijection is given between the set of directed column-convex polyominoes of area n and the set of ordered trees of height at most three and having n edges. Additional bijections with less well known combinatorial objects are sketched.

On the C-Curves of a Convex Surface
On the C-Curves of a Convex Surface
✍ Paris Pamfilos πŸ“‚ Article πŸ“… 1988 πŸ› John Wiley and Sons 🌐 English βš– 206 KB

0. Introdnction. W. BLASCHXE proved in his book "Kreis und Kugel" ([ 11, p. 157) the following theorem: An ovaloid which for every direction e (unit vector) of parallel light has plnnnr shadow-lines L'i (fig. 1) is an ellipsoid.