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MFCS
2007
Springer
13 years 11 months ago
Transition Graphs of Rewriting Systems over Unranked Trees
We investigate algorithmic properties of infinite transition graphs that are generated by rewriting systems over unranked trees. Two kinds of such rewriting systems are studied. ...
Christof Löding, Alex Spelten
CSL
2008
Springer
13 years 6 months ago
Characterization of Logics over Ranked Tree Languages
We study the expressive power of the logics EF + F-1 , 2 and boolean combinations of 1 over ranked trees. In particular, we provide effective characterizations of those three logic...
Thomas Place
CORR
2008
Springer
142views Education» more  CORR 2008»
13 years 4 months ago
Declarative Combinatorics: Boolean Functions, Circuit Synthesis and BDDs in Haskell
We describe Haskell implementations of interesting combinatorial generation algorithms with focus on boolean functions and logic circuit representations. First, a complete exact c...
Paul Tarau
MFCS
2009
Springer
13 years 11 months ago
Query Automata for Nested Words
We study visibly pushdown automata (VPA) models for expressing and evaluating queries, expressed using MSO formulas, on words with a nesting structure (like XML documents). We de...
P. Madhusudan, Mahesh Viswanathan