This content originally appeared on HackerNoon and was authored by Hierarchy
Table of Links
\ Appendix A. Appendix to Section 2
Appendix B. Appendix to Section 3
Appendix C. Appendix to Section 4
Appendix D. Appendix to Section 5
2. Preliminaries
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\ Remark 1. The only infinite monoids that we consider are of the form A∗ . From now on, we implicitly assume that every other monoid M, N, . . . appearing in the paper is finite.
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\ We shall also consider the class LT of locally testable languages [6, 44]. It consists of all finite Boolean combinations of languages A∗wA∗ , wA∗ and A∗w where w ∈ A∗ is a word.
\ Decision problems. These problems depend on a parameter class C. We use them as tools for analyzing C: intuitively, proving their decidability requires a solid understanding of C. The simplest one is C-membership. Its input is a regular language L. It asks whether L ∈ C.
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:::info This paper is available on arxiv under CC BY 4.0 DEED license.
:::
:::info Authors:
(1) Thomas Place;
(2) Marc Zaitoun.
:::
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This content originally appeared on HackerNoon and was authored by Hierarchy
Hierarchy | Sciencx (2025-01-30T02:07:04+00:00) The Preliminaries We Used to Classify Languages: Fixing a Finite Alphabet. Retrieved from https://www.scien.cx/2025/01/30/the-preliminaries-we-used-to-classify-languages-fixing-a-finite-alphabet/
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