A proof of Ehrenfeucht's conjecture
Theoretical Computer Science
A simple proof of the Skolem-Mahler-Lech Theorem
Theoretical Computer Science
Rational series and their languages
Rational series and their languages
The equivalence problem of multitape finite automata
Theoretical Computer Science
Handbook of formal languages, vol. 1
When is a pair of matrices mortal?
Information Processing Letters
Example of undecidable problems for 2-generator matrix semigroups
Theoretical Computer Science - Special issue: papers dedicated to the memory of Marcel-Paul Schützenberger
Automata, Languages, and Machines
Automata, Languages, and Machines
Introduction to Mathematical Theory of Computation
Introduction to Mathematical Theory of Computation
Decision Problems for Semi-Thue Systems with a Few Rules
LICS '96 Proceedings of the 11th Annual IEEE Symposium on Logic in Computer Science
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We give a survey of simple undecidability results and open problems concerning matrices of low order with integer entries. Connections to the theory of finite automata (with multiplicities) are also provided.