Gromov: hyperbolic groups

What changed

Developed hyperbolic groups through Cayley-graph geometry, boundaries and algorithmic consequences.

Scientific scope

The record is the sole-author 1987 chapter in Essays in Group Theory. Earlier hyperbolic geometry, prior small-cancellation theory, later proofs and extensions to relatively hyperbolic groups remain separate.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is the sole-author 1987 chapter in Essays in Group Theory. Earlier hyperbolic geometry, prior small-cancellation theory, later proofs and extensions to relatively hyperbolic groups remain separate.

Contributors

• Mikhail Gromov · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• Gromov author page for Hyperbolic Groups
• Springer record for Essays in Group Theory

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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