Rita Gitik, Eliyahu Rips
Abstract
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We give two examples of a finitely generated subgroup of a free group and a subset, closed in the profinite topology of a free group, such that their product is not closed in the profinite topology of a free group.
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We give two examples of a finitely generated subgroup of a free group and a subset, closed in the profinite topology of a free group, such that their product is not closed in the profinite topology of a free group.
Key concepts: Mathematics, Mathematical economics, Combinatorics, Business