Acyclic Homomorphisms and Circular Colorings of Digraphs.

Tomás Feder Pavol Hell Bojan Mohar

Published in: SIAM J. Discret. Math. (2003)

Keyphrases

database schemes
np hard
hough transform
equivalence classes
np complete
graph coloring
harmonic functions
directed graph
graph theory
finite state automata
microstrip antenna
database
markov models
decision problems
scheduling problem
social networks
neural network
databases