Finitely generated subgroups of free groups as formal languages and their cogrowth

For finitely generated subgroups $H$ of a free group $F_m$ of finite rank $m$, we study the language $L_H$ of reduced words that represent $H$ which is a regular language. Using the (extended) core of Schreier graph of $H$, we construct the minimal deterministic finite automaton that recognizes $L_H...

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Bibliographic Details
Main Authors: Arman Darbinyan, Rostislav Grigorchuk, Asif Shaikh
Format: Article
Language:English
Published: Episciences 2021-11-01
Series:Groups, Complexity, Cryptology
Subjects:
Online Access:https://gcc.episciences.org/7617/pdf