Equations in free groups are not finitely approximable

Equations in free groups are not finitely approximable
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Proc. Amer. Math. Soc. 127 (1999), 963-965

DOI: https://doi.org/10.1090/S0002-9939-99-04747-4

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We give an equation in any free group $F$ of rank $\geq 2$ that has a solution in any finite quotient of $F$, but has no solution in $F$.

References

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