The Dot-Depth Hierarchy of Star-Free Languages is Infinite.

Janusz A. Brzozowski Robert Knast

Published in: J. Comput. Syst. Sci. (1978)

Keyphrases

expressive power
language independent
multi lingual
depth information
regular languages
cross lingual
higher level
depth map
neural network
databases
depth images
depth estimation
gray scale
information retrieval
lower level
text summarization
data sets
database