Abstract
The Lambek–Grishin calculus LG is a categorial type logic obtained by adding a family of connectives dual to the family { ⊗ , /, \}, and adding interaction postulates between the two families of connectives thus obtained. In this paper, we prove a new lower bound on the generative capacity of LG, namely the class of languages that are the intersection of a context-free language and the permutation closure of a context-free language. This implies that LG recognizes languages like the MIX language, e.g. the permutation closure of , and , which can not be recognized by tree adjoining grammars.
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Melissen, M. (2011). The Generative Capacity of the Lambek–Grishin Calculus: A New Lower Bound. In: de Groote, P., Egg, M., Kallmeyer, L. (eds) Formal Grammar. FG 2009. Lecture Notes in Computer Science(), vol 5591. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20169-1_8
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