login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A097914 Number of points in a certain complex manifold associated with the Hilbert modular group of the totally real field Q(sqrt(n)), n squarefree, that arise from isotropy groups of order 2. 2

%I #8 Apr 28 2019 20:10:59

%S 1,2,3,2,6,4,6,10,2,12,8,4,10,4,6,12,18,6,12,12,4,12,20,2,18,16,8

%N Number of points in a certain complex manifold associated with the Hilbert modular group of the totally real field Q(sqrt(n)), n squarefree, that arise from isotropy groups of order 2.

%H F. Hirzebruch, <a href="http://dx.doi.org/10.5169/seals-46292">Hilbert modular surfaces</a>, L'Enseignement Math., 19 (1973), 183-281; Ges. Abh. II, 225-323.

%H A. Prestel, <a href="http://gdz.sub.uni-goettingen.de/dms/resolveppn/?PPN=GDZPPN00229978X">Die elliptischen Fixpunkte der Hilbertschen Modulgruppen</a>, Math. Ann., 177 (1968), 181-209.

%H A. Prestel, <a href="http://gdz.sub.uni-goettingen.de/dms/resolveppn/?PPN=GDZPPN002307111">Die Fixpunkte der symmetrischen Hilbertschen Modulgruppe zu einem reell-quadratischen Zahlkörper mit Primzahldiskriminante</a>, Math. Ann., 200 (1973), 123-139.

%Y Cf. A097915, A097916, A097917, A097918.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Sep 04 2004

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 11:22 EDT 2024. Contains 371779 sequences. (Running on oeis4.)