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CONCUR
1998
Springer
14 years 4 months ago
The Regular Viewpoint on PA-Processes
PA is the process algebra allowing non-determinism, sequential and parallel compositions, and recursion. We suggest viewing PA-processes as trees, and using treeautomata technique...
Denis Lugiez, Ph. Schnoebelen
PODS
2010
ACM
170views Database» more  PODS 2010»
14 years 5 months ago
Simplifying XML schema: single-type approximations of regular tree languages
XML Schema Definitions (XSDs) can be adequately abstracted by the single-type regular tree languages. It is wellknown, that these form a strict subclass of the robust class of re...
Wouter Gelade, Tomasz Idziaszek, Wim Martens, Fran...
STOC
2010
ACM
216views Algorithms» more  STOC 2010»
14 years 9 months ago
The HOM problem is decidable
We close affirmatively a question which has been open for long time: decidability of the HOM problem. The HOM problem consists in determining, given a tree homomorphism D and a re...
Guillem Godoy, Omer Giménez, Lander Ramos and Car...