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Closure properties of slender languages
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Gheorghe Paun, Arto Salomaa
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Closure properties of cellular automata
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Closure Properties of Synchronized Relations.
A standard approach to define k-ary word relations over a finite alphabet A is through k-tape finite state automata that recognize regular languages L over {1, ..., k} x A, where (i,a) is interpreted as reading letter a from tape i. Accordingly, a word w in L denotes the tuple (u_1, ..., u_k) in (A^*)^k in which u_i is the projection of w onto i ...
Descotte, María Emilia +2 more
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A closure property of regular languages
Given a semigroup homomorphism \(\theta\) : \(X^*\to {\mathcal P}(Y^*)\) where \({\mathcal P}(Y^*)\) is the powerset of \(Y^*\), we show that the inverse image \(K\theta^{-1}\) of a regular set \(K\subseteq Y^*\) is regular, too. This theorem has several consequences generalizing previously known results.
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Classes of Spatio-Temporal Objects and their Closure Properties
27 pages, 4 ...
Jan Chomicki +3 more
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Exchange properties of combinatorial closure spaces
A closure space E is equipped with a closure operator on subsets which is extensive (A\(\subseteq \bar A)\), idempotent (\(\bar{\bar A}=\bar A)\) and monotone \((A\subset B\) implies \(\bar A\subset \bar B)\). Closure spaces have beenstudied in a great variety of settings and for a long period of time. The literature is quite enormous.
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Multifunctional Oregano-Derived Plasma Polymer Coatings for Wound Healing Applications: An In Vitro Study. [PDF]
Romo-Rico J +7 more
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Investigating the Role of Fish Skin Grafts in Treating Complex Posterior Spinal Wounds. [PDF]
Caceres HS +5 more
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On a Closure Property of Measurable Sets [PDF]
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