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ACID
2006
264views Algorithms» more  ACID 2006»
15 years 7 months ago
A Parameterized View on Matroid Optimization Problems
Matroid theory gives us powerful techniques for understanding combinatorial optimization problems and for designing polynomial-time algorithms. However, several natural matroid pr...
Dániel Marx
DAGSTUHL
2006
15 years 7 months ago
Binary Lambda Calculus and Combinatory Logic
In the first part, we introduce binary representations of both lambda calculus and combinatory logic terms, and demonstrate their simplicity by providing very compact parser-inter...
John Tromp
DAGSTUHL
2006
15 years 7 months ago
A note on the size of Craig Interpolants
Mundici considered the question of whether the interpolant of two propositional formulas of the form F G can always have a short circuit description, and showed that if this is t...
Uwe Schöning, Jacobo Torán
CORR
2006
Springer
88views Education» more  CORR 2006»
15 years 6 months ago
Polynomial Time Nondimensionalisation of Ordinary Differential Equations via their Lie Point Symmetries
Lie group theory states that knowledge of a m-parameters solvable group of symmetries of a system of ordinary differential equations allows to reduce by m the number of equation. ...
Evelyne Hubert, Alexandre Sedoglavic
SIGACT
2008
103views more  SIGACT 2008»
15 years 6 months ago
Computational geometry column 50
Two long-open problems have been solved: (1) every sufficiently large planar point set in general position contains the vertices of an empty hexagon; (2) every finite collection o...
Joseph O'Rourke