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CONCUR
1998
Springer
13 years 12 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
DCG
2010
84views more  DCG 2010»
13 years 7 months ago
On Lines and Joints
Let L be a set of n lines in Rd , for d 3. A joint of L is a point incident to at least d lines of L, not all in a common hyperplane. Using a very simple algebraic proof techniqu...
Haim Kaplan, Micha Sharir, Eugenii Shustin
ENTCS
2002
136views more  ENTCS 2002»
13 years 7 months ago
Final Coalgebras And a Solution Theorem for Arbitrary Endofunctors
Every endofunctor F of Set has an initial algebra and a final coalgebra, but they are classes in general. Consequently, the endofunctor F of the category of classes that F induces...
Jirí Adámek, Stefan Milius, Jiri Vel...
CORR
2010
Springer
69views Education» more  CORR 2010»
13 years 7 months ago
The Isomorphism Relation Between Tree-Automatic Structures
An -tree-automatic structure is a relational structure whose domain and relations are accepted by Muller or Rabin tree automata. We investigate in this paper the isomorphism probl...
Olivier Finkel, Stevo Todorcevic
IFIPTCS
2010
13 years 5 months ago
Convexity, Duality and Effects
This paper describes some basic relationships between mathematical structures that are relevant in quantum logic and probability, namely convex sets, effect algebras, and a new cl...
Bart Jacobs