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» Minimally non-Pfaffian graphs
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EJC
2010
15 years 6 months ago
Combinatorial characterization of the Assur graphs from engineering
We introduce the idea of Assur graphs, a concept originally developed and exclusively employed in the literature of the kinematics community. The paper translates the terminology,...
Brigitte Servatius, Offer Shai, Walter Whiteley
ENTCS
2008
72views more  ENTCS 2008»
15 years 6 months ago
Towards a Notion of Transaction in Graph Rewriting
We define transactional graph transformation systems (t-gtss), a mild extension of the ordinary framework for the double-pushout approach to graph transformation, which allows to ...
Paolo Baldan, Andrea Corradini, Fernando Luí...
JAIR
2008
99views more  JAIR 2008»
15 years 6 months ago
The Complexity of Planning Problems With Simple Causal Graphs
We present three new complexity results for classes of planning problems with simple causal graphs. First, we describe a polynomial-time algorithm that uses macros to generate pla...
Omer Giménez, Anders Jonsson
JGT
2007
112views more  JGT 2007»
15 years 6 months ago
The 2-dimensional rigidity of certain families of graphs
Laman’s characterization of minimally rigid 2-dimensional generic frameworks gives a matroid structure on the edge set of the underlying graph, as was first pointed out and expl...
Bill Jackson, Brigitte Servatius, Herman Servatius
COCOC
1995
150views Combinatorics» more  COCOC 1995»
15 years 10 months ago
On Central Spanning Trees of a Graph
We consider the collection of all spanning trees of a graph with distance between them based on the size of the symmetric difference of their edge sets. A central spanning tree o...
Sergei L. Bezrukov, Firoz Kaderali, W. Poguntke