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The minimal probabilistic and quantum finite automata recognizing uncountably many languages with fixed cutpoints

  • University of Latvia

Research output: Contribution to journal › Article › peer-review

Abstract

It is known that 2-state binary and 3-state unary probabilistic finite automata and 2-state unary quantum finite automata recognize uncountably many languages with cutpoints. These results have been obtained by associating each recognized language with a cutpoint and then by using the fact that there are uncountably many cutpoints. In this note, we prove the same results for fixed cutpoints: each recognized language is associated with an automaton (i.e., algorithm), and the proofs use the fact that there are uncountably many automata. For each case, we present a new construction.

Original languageEnglish
Article number13
JournalDiscrete Mathematics and Theoretical Computer Science
Volume22
Issue number1
DOIs
Publication statusPublished - 2020

OECD Field of Science

  • 1.2 Computer and Information Sciences

Keywords

  • probabilistic automaton
  • quantum automaton
  • recognition with cutpoint
  • unary languages
  • uncountable languages

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