A Proof of the Freiheitssatz and the Cohen-Lyndon Theorem for One-Relator Groups

DOI10.1112/jlms/s2-7.3.508zbMath0273.20028OpenAlexW2064342130MaRDI QIDQ5181867

Robert G. Burns

Publication date: 1974

Published in: Journal of the London Mathematical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1112/jlms/s2-7.3.508

Mathematics Subject Classification ID

Generators, relations, and presentations of groups (20F05) Extensions, wreath products, and other compositions of groups (20E22) Free products of groups, free products with amalgamation, Higman-Neumann-Neumann extensions, and generalizations (20E06)

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Aspherical group presentations ⋮ Infinite groups

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