A note on a 3-dimensional homogeneous space
Page 1 Next
J. H. Rubinstein, C. Gardiner (1979)
Compositio Mathematica
D.R. Farkas, R.L. Snider (1984)
Inventiones mathematicae
G.A. Margulies (1984)
Inventiones mathematicae
Mark McConnell (1991)
Mathematische Annalen
Joachim Schwermer, Ronnie Lee (1982)
Journal für die reine und angewandte Mathematik
Avner Ash (1980)
Mathematische Annalen
Recep Şahin, Osman Bizim, I. N. Cangul (2004)
Czechoslovak Mathematical Journal
Hecke groups are the discrete subgroups of generated by and . The commutator subgroup of (, denoted by , is studied in [2]. It was shown that is a free group of rank . Here the extended Hecke groups , obtained by adjoining to the generators of , are considered. The commutator subgroup of is shown to be a free product of two finite cyclic groups. Also it is interesting to note that while in the case, the index of is changed by , in the case of , this number is either 4 for...
Chua, Kok Seng, Lang, Mong Lung (2004)
Experimental Mathematics
Cummins, C.J. (2004)
Experimental Mathematics
Theadore Sauer (1991)
Beiträge zur Algebra und Geometrie = Contributions to algebra and geometry
Müller, T.W., Schlage-Puchta, J.-C. (2005)
The New York Journal of Mathematics [electronic only]
M. Alsina (2000)
Revista de la Real Academia de Ciencias Exactas Físicas y Naturales
Opgenorth, Jürgen (2001)
Experimental Mathematics
Horst Struve (1985)
Beiträge zur Algebra und Geometrie = Contributions to algebra and geometry
Hilde Abold, Wilhelm Plesken (1978)
Mathematische Annalen
Helmut Behr (1975)
Mathematische Zeitschrift
Jürgen Wolfart, Franz Kirchheimer (1980)
Journal für die reine und angewandte Mathematik
B. Bürgisser (1981)
Mathematische Annalen
Morris Newman (1974)
Mathematische Annalen
A.W. Mason (1992)
Mathematische Annalen
Page 1 Next