65 search results - page 10 / 13 » Preservation theorems for bounded formulas |
109
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BIRTHDAY
1997
Springer
15 years 4 months ago
1997
Springer
We compare the expressive power on finite models of two extensions of first order logic L with equality. L(Ct) is formed by adding an operator count{x : ϕ}, which builds a term ...
JCT
2007
15 years 9 days ago
2007
We conjecture that every planar graph of odd-girth 2k + 1 admits a homomorphism to Cayley graph C(Z2k+1 2 , S2k+1), with S2k+1 being the set of (2k + 1)vectors with exactly two co...
86
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CSL
2007
Springer
15 years 6 months ago
2007
Springer
We study the complexity of satisfiability for DLP+ dyn , an expressive logic introduced by Demri that allows to reason about dynamic policies. DLP+ dyn extends the logic DLPdyn of...
STOC
1989
ACM
15 years 4 months ago
1989
ACM
Division is a fundamental problem for arithmetic and algebraic computation. This paper describes Boolean circuits of bounded fan-in for integer division nding reciprocals that...
100
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GC
2010
Springer
14 years 11 months ago
2010
Springer
A directed graph has a natural Z-module homomorphism from the underlying graph’s cycle space to Z where the image of an oriented cycle is the number of forward edges minus the n...