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Monadic second-order logic over pictures and recognizability by tiling systems

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STACS 94 (STACS 1994)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 775))

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Abstract

We show that a set of pictures (rectangular arrays of symbols) is recognized by a finite tiling system if and only if it is definable in existential monadic second-order logic. As a consequence, finite tiling systems constitute a notion of recognizability over two-dimensional inputs which at the same time generalizes finite-state recognizability over strings and matches a natural logic. The proof is based on the Ehrenfeucht-FraÏssé technique for first-order logic and an implementation of “threshold counting” within tiling systems.

Work supported by the ESPRIT Basic Research Actions Program of the EC under Project ASMICS 2 (contract No. 6317).

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Patrice Enjalbert Ernst W. Mayr Klaus W. Wagner

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© 1994 Springer-Verlag Berlin Heidelberg

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Giammarresi, D., Seibert, S., Restivo, A., Thomas, W. (1994). Monadic second-order logic over pictures and recognizability by tiling systems. In: Enjalbert, P., Mayr, E.W., Wagner, K.W. (eds) STACS 94. STACS 1994. Lecture Notes in Computer Science, vol 775. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-57785-8_155

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  • DOI: https://doi.org/10.1007/3-540-57785-8_155

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