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</script>We present an exposition of the theory of finite automata augmented with a multiply-only register storing an element of a given monoid or group. Included are a number of new results of a foundational nature. We illustrate our techniques with a group-theoretic interpretation and proof of a key theorem of Chomsky and Schutzenberger from formal language theory.
15 pages, 1 figure, exposition improved, glitches fixed, references and author's contact details updated
FOS: Mathematics, 20E05, 20F10, 20M35, 68Q70, Group Theory (math.GR), Mathematics - Group Theory
FOS: Mathematics, 20E05, 20F10, 20M35, 68Q70, Group Theory (math.GR), Mathematics - Group Theory
| citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 37 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
