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ECCC
2010
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13 years 3 months ago
Logspace Versions of the Theorems of Bodlaender and Courcelle
Bodlaender’s Theorem states that for every k there is a linear-time algorithm that decides whether an input graph has tree width k and, if so, computes a width-k tree compositio...
Michael Elberfeld, Andreas Jakoby, Till Tantau
LICS
2003
IEEE
13 years 9 months ago
Spectra of Monadic Second-Order Formulas with One Unary Function
We establish the eventual periodicity of the spectrum of any monadic second-order formula where (i) all relation symbols, except equality, are unary, and (ii) there is only one fu...
Yuri Gurevich, Saharon Shelah
FSTTCS
2009
Springer
13 years 11 months ago
Covering of ordinals
The paper focuses on the structure of fundamental sequences of ordinals smaller than ε0. A first result is the construction of a monadic second-order formula identifying a given ...
Laurent Braud