On a Theorem by Leon Greenberg

DOI10.2307/2037478zbMath0182.35803OpenAlexW4235409298MaRDI QIDQ5572385

Alexander W. Mason

Publication date: 1969

Full work available at URL: https://doi.org/10.2307/2037478

zbMATH Keywords

group theory

Related Items

Subgroups of infinite index in the modular group

Cites Work

• Residual nilpotency of Fuchsian groups
• An extension of F. Klein's level concept
• Congruence subgroups of positive genus of the modular group
• Free subgroups and normal subgroups of the modular group
• Note on Normal Subgroups of the Modular Group
• Lattice subgroups of free congruence groups
• Classification of Normal Subgroups of the Modular Group