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COMBINATORICS
2004
55views more  COMBINATORICS 2004»
9 years 1 hour ago
On the Generation and Enumeration of some Classes of Convex Polyominoes
Alberto Del Lungo, Enrica Duchi, Andrea Frosini, S...
COMBINATORICS
2006
106views more  COMBINATORICS 2006»
9 years 5 days ago
Tilings by Translation: Enumeration by a Rational Language Approach
Beauquier and Nivat introduced and gave a characterization of the class of pseudo-square polyominoes that tile the plane by translation: a polyomino tiles the plane by translation...
Srecko Brlek, Andrea Frosini, Simone Rinaldi, Laur...
DM
1998
66views more  DM 1998»
8 years 11 months ago
Steep polyominoes, q-Motzkin numbers and q-Bessel functions
We introduce three de├┐nitions of q-analogs of Motzkin numbers and illustrate some combinatorial interpretations of these q-numbers. We relate the ├┐rst class of q-numbers to the ...
Elena Barcucci, Alberto Del Lungo, Jean-Marc Fedou...
DCC
1998
IEEE
8 years 11 months ago
Enumeration, Construction and Random Generation of Block Codes
We discuss some methods for the enumeration, construction and random generation of isometry classes of block codes using methods from algebraic combinatorics.
Harald Fripertinger
EJC
2008
9 years 6 days ago
Dyck paths with coloured ascents
We introduce a notion of Dyck paths with coloured ascents. For several ways of colouring, when the set of colours is itself some class of lattice paths, we establish bijections be...
Andrei Asinowski, Toufik Mansour
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