273 search results - page 20 / 55 » On periodicity of two-dimensional words |
EVOW
2010
Springer
15 years 5 months ago
2010
Springer
A Shinro puzzle is a type of deductive reasoning puzzle that originated in Japanese periodicals. To solve the puzzle, one must locate twelve hidden stones on an 8x8 grid using only...
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LITP
1990
15 years 3 months ago
1990
In this paper we provide several new results concerning word and matrix semigroup problems using counter automaton models. As a main result, we prove a new version of Post's c...
ICWSM
2010
15 years 15 days ago
2010
We connect measures of public opinion measured from polls with sentiment measured from text. We analyze several surveys on consumer confidence and political opinion over the 2008 ...
SIAMREV
2010
14 years 5 months ago
2010
A survey of different representations for lattice sums for the Helmholtz equation is given. These sums arise naturally when dealing with wave scattering by periodic structures. One...
FORMATS
2007
Springer
15 years 5 months ago
2007
Springer
We identify a class of timed automata, which we call counter-free input-determined automata, which characterize the class of timed languages definable by several timed temporal l...