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JSYML
2006
13 years 5 months ago
2006
We investigate diagonal actions of Polish groups and the related intersection operator on closed subgroups of the acting group. The Borelness of the diagonal orbit equivalence rela...
COMBINATORICS
2004
13 years 5 months ago
2004
We introduce intersection schemes (a generalization of uniform oriented matroids of rank 3) to describe the combinatorial properties of arrangements of pseudocircles in the plane ...
ECCC
2006
13 years 5 months ago
2006
We give the first representation-independent hardness results for PAC learning intersections of halfspaces, a central concept class in computational learning theory. Our hardness ...
CP
2004
Springer
13 years 10 months ago
2004
Springer
We have started a systematic study of global constraints on set and multiset variables. We consider here disjoint, partition, and intersection constraints in conjunction with cardi...
COMPGEOM
2006
ACM
13 years 11 months ago
2006
ACM
In a Batched Colored Intersection Searching Problem (CI), one is given a set of n geometric objects (of a certain class). Each object is colored by one of c colors, and the goal i...