144 search results - page 4 / 29 » Generalized Dyck tilings |
CORR
2010
Springer
14 years 9 months ago
2010
Springer
This paper provides a bridge between the classical tiling theory and cellular automata on one side, and the complex neighborhood self-assembling situations that exist in practice,...
PLDI
2004
ACM
15 years 3 months ago
2004
ACM
Many program analyses can be reduced to graph reachability problems involving a limited form of context-free language reachability called Dyck-CFL reachability. We show a new redu...
JCT
2007
14 years 9 months ago
2007
Given a sequence of integers b = (b0,b1,b2,...) one gives a Dyck path P of length 2n the weight wt(P) = bh1 bh2 ···bhn , where hi is the height of the ith ascent of P. The corr...
COMBINATORICS
2004
14 years 9 months ago
2004
We study the distribution of the statistics `number of fixed points' and `number of excedances' in permutations avoiding subsets of patterns of length 3. We solve all th...
WMTE
2005
IEEE
15 years 3 months ago
2005
IEEE
This paper presents a working prototype of a mobile, programmable set of construction kit elements for children. SmartTiles are small, lightweight, independently programmable tile...