684 search results - page 20 / 137 » A characterization of b-perfect graphs |
114
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WG
2007
Springer
15 years 7 months ago
2007
Springer
A circular-arc model M = (C, A) is a circle C together with a collection A of arcs of C. If no arc is contained in any other then M is a proper circular-arc model, if every arc has...
CPC
1998
15 years 1 months ago
1998
We give a characterization for isoperimetric invariants, including the Cheeger constant and the isoperimetric number of a graph. This leads to an isoperimetric inequality for the ...
125
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ICWSM
2010
15 years 3 months ago
2010
As microblogging grows in popularity, services like Twitter are coming to support information gathering needs above and beyond their traditional roles as social networks. But most...
121
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ICRA
2005
IEEE
15 years 7 months ago
2005
IEEE
— In this paper a novel formalism to characterize contact states between an articulated polyhedral object and a polyhedral environment for the generation of the graph of feasible...
111
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CDC
2009
IEEE
15 years 5 months ago
2009
IEEE
This paper considers the controllability problem for multi-agent systems. In particular, the structural controllability of multi-agent systems with a single leader under switching ...