297 search results - page 10 / 60 » An Algebra for Directed Bigraphs |
COMBINATORICS
2006
13 years 7 months ago
2006
Abstract. Let G denote a directed graph with adjacency matrix Q and indegree matrix D. We consider the Kirchhoff matrix L = D - Q, sometimes referred to as the directed Laplacian. ...
ISBI
2006
IEEE
14 years 8 months ago
2006
IEEE
We present an algebraic solution to direct registration of diffusion tensor images under various local deformation models. We show how to linearly recover the deformation from the...
ICALP
1999
Springer
13 years 12 months ago
1999
Springer
We consider the problem of simulation preorder/equivalence between infinite-state processes and finite-state ones. We prove that simulation preorder (in both directions) and simu...
EJC
2010
13 years 6 months ago
2010
Prudent walks are self-avoiding walks on a lattice which never step into the direction of an already occupied vertex. We study the closed version of these walks, called prudent po...
SIAMSC
2011
13 years 2 months ago
2011
We propose a numerical method to approximate the solution of second order elliptic problems in nonvariational form. The method is of Galerkin type using conforming finite elements...