Homepage of  Andreas Schweizer


ADDRESS: Andreas Schweizer

Institute of Mathematics, Academia Sinica
6F, Astronomy-Mathematics Building
No. 1, Sec. 4, Roosevelt Road
Taipei 10617
TAIWAN
EMAIL: myfamilyname@math.sinica.edu.tw

where myfamilyname should, of course, be replaced by my family name.
PhD: Universität des Saarlandes, Saarbrücken, Germany, 1996, Supervisor: Prof. Ernst-Ulrich Gekeler
RESEARCH INTERESTS: Algebraic Number Theory and Arithmetic Geometry, especially: arithmetic of function fields, Drinfeld modules and Drinfeld modular curves, elliptic curves and modular curves, quaternion algebras, non-congruence subgroups

PUBLICATIONS:

Research papers in (chrono)logical order:
1.
On the Drinfeld Modular Polynomial $\Phi_T(X,Y)$, J. Number Theory 52 (1995), 53-68
(free access via journal)
2.
Modular automorphisms of the Drinfeld modular curves $X_0({\frak n})$, Collectanea Math. 48 (1997), 209-216 
(free access via journal)
3.
On singular and supersingular invariants of Drinfeld modules, Ann. Fac. Sci. Toulouse Math. 6 (1997), 319-334 
(free access via Numdam)
4.
Hyperelliptic Drinfeld Modular Curves, in: Drinfeld Modules, Modular Schemes and Applications, (E.-U. Gekeler, M. van der Put, M. Reversat, J. Van Geel, eds.), World Scientific, Singapore, 1997, pp. 330-343 
5.
Involutory elliptic curves over ${\mathbb F}_q(T)$, J. Th\'eor. Nombres Bordeaux 10 (1998), 107-123 
(free access via Numdam)
6.
On elliptic curves over function fields of characteristic two, J. Number Theory 87 (2001),  31-53
(free access via journal)
7.
On elliptic curves in characteristic 2 with wild additive reduction, Acta Arith. 91 (1999), 171-180
(free access via Polish Virtual Library of  Sciene)
8.
Extremal elliptic surfaces in characteristic 2 and 3, Manuscripta Math. 102 (2000), 505-521 
9.
Bielliptic Drinfeld Modular Curves,  Asian J. Math. vol. 5, no. 4 (December 2001),  705-720 
10.
On Drinfeld modular curves with many rational points over finite fields,  Finite Fields Appl. 8 (2002), 434-443
(free access via journal)
11.
On the uniform boundedness conjecture for Drinfeld modules, Math. Z. 244 (2003),  601-614 
12.
(with A.W. Mason)  The minimum index of a non-congruence subgroup of $SL_2$ over an arithmetic domain, Israel J. Math. 133 (2003), 29-44
13.
Torsion of Drinfeld modules and gonality, Forum Math. 16 (2004), 925-941
14.
On periodic points under the iteration of additive polynomials, Manuscripta Math. 113 (2004), 25-34 
15.
(with D. Jeon and C.H. Kim) On the torsion of elliptic curves over cubic number fields, Acta Arith. 113 (2004), 291-301
16.
On the $p^e$-torsion of elliptic curves and elliptic surfaces in characteristic $p$, Trans. Amer. Math. Soc. 357 (2005), 1047-1059
(free access via journal)
17.
(with A.W. Mason) The minimum index of a non-congruence subgroup of $SL_2$ over an arithmetic domain. II: The rank zero cases, J. London Math. Soc. 71 (2005), 53-68
18.
Shared values of meromorphic functions on compact Riemann surfaces, Arch. Math. (Basel) 84 (2005), 71-78
19.
(with A.W. Mason) Non-standard automorphisms and non-congruence subgroups of $SL_2$ over Dedekind domains contained in function fields,  J. Pure Appl. Algebra 205 (2006), 189-209
(free access via journal)
20.
(with M. Schütt ) On Davenport-Stothers inequalities and elliptic surfaces in positive characteristic, Quarterly J. Math. (Oxford) 59 (2008), 499-522
(article in preprint-arXiv)
21.
(with A.W. Mason) Nonrational genus zero function fields and the Bruhat-Tits tree, Communications in Algebra 37 no. 12 (2009), 4241-4258
(article in preprint-arXiv)
22.
Value-sharing of meromorphic functions on a Riemann surface, J. Math. Anal. Appl. 365 (2010), 220-228
(article in preprint-arXiv)
23.
Strong Weil curves over ${\mathbb F}_q(T)$ with small conductor,  J. Number Theory 131 (2011), 285-299
(article in preprint-arXiv
24.
(with M. Schütt ) On the uniqueness of elliptic K3 surfaces with maximal singular fibre,  Ann.  Inst. Fourier (Grenoble), to appear
(article in preprint-arXiv)
25.
(with A.W. Mason) The cusp amplitudes and quasi-level of a congruence subgroup of $SL_2$ over any Dedekind domain, Proc. London Math. Soc., in press
(article in preprint-arXiv)
26.
Entire functions sharing simple $a$-points with their first derivative, Houston J. Math., to appear
(
article in preprint-arXiv)
27.
(with A.W. Mason) The vertex stabilizers of the Bruhat-Tits tree of a Drinfeld modular group, submitted
(article in preprint-arXiv)
28.
On the uniqueness of $(p,h)$-gonal automorphisms of Riemann surfaces, submitted
(article in preprint-arXiv)

 
 

Survey articles:

1. Some applications of  Drinfeld modular curves pp. 1-6 Trends in Mathematics, vol. 4, no 2 (December 2001), KAIST, Taejon


FR 6.1 Mathematik | Arbeitsgruppe

Last changes:  March 28, 2012