Monomorphisms of finitely generated free groups have finitely generated equalizers.
R.Z. Goldstein, E.G. Turner (1985)
Inventiones mathematicae
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R.Z. Goldstein, E.G. Turner (1985)
Inventiones mathematicae
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P. A. Zalesskii (1999)
Disertaciones Matemáticas del Seminario de Matemáticas Fundamentales
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Benjamin Fine, Gerhard Rosenberger, Michael Stille (1997)
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Here we consider two classes of torsion-free one-relator groups which have proved quite amenable to study-the cyclically pinched one-relator groups and the conjugacy pinched one-relator groups. The former is the class of groups which are free products of free groups with cyclic amalgamations while the latter is the class of HNN extensions of free groups with cyclic associated subgroups. Both are generalizations of surface groups. We compare and contrast results in these classes relative...
László Fuchs, Gerhardus Viljoen (1999)
Czechoslovak Mathematical Journal
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F.E.A. Johnson (1994)
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B. H. Neumann (1956-1958)
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Tieudjo, D. (2005)
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