Computation tree logic CTL* and path quantifiers in the monadic theory of the binary tree
14th International Colloquium on Automata, languages and programming
The Book of Traces
Proceedings of the First International Conference on Temporal Logic
ICTL '94 Proceedings of the First International Conference on Temporal Logic
Ehrenfeucht Games, the Composition Method, and the Monadic Theory of Ordinal Words
Structures in Logic and Computer Science, A Selection of Essays in Honor of Andrzej Ehrenfeucht
On the Expressive Power of CTL
LICS '99 Proceedings of the 14th Annual IEEE Symposium on Logic in Computer Science
The composition method
Composition Theorems for Generalized Sum and Recursively Defined Types
Electronic Notes in Theoretical Computer Science (ENTCS)
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Composition theorems are tools which reduce sentences about some compound structure to sentences about its parts. A seminal example of such a theorem is the Feferman-Vaught Theorem [3] which reduces the first-order theory of generalized products to the first order theory of its factors and the monadic second-order theory of index structure. Shelah [23] used the composition theorem for linear orders as one of the main tools for obtaining very strong decidability results for the monadic second-order theory of linear orders. The main technical contribution of our paper is (1) a definition of a generalized sum of structures and (2) a composition theorem for first-order logic over the generalized sum. One of our objectives is to emphasize the work-out of the composition method.