Department of Mathematical Sciences, Mathematics Division
University of Stellenbosch
7602 Stellenbosch
South Africa
Tel: +27 (0) 21 808 3288
Fax: +27 (0) 21 808 3828
email: fbreuersun.ac.za
Activities:
Postdoc opportunity for Germans: Are you German, and want to do a postdoc at Stellenbosch University? Apply
here to get a postdoc scholarship from the Alexander-von-Humboldt Foundation.
As a Humboldian, I can be your host in South Africa.
The Number Theory Seminar takes place once a week, on Tuesdays 15h00-16h00, in room 1006A.
Dirk Basson is now in charge.
Wiskus is the undergraduate Mathematics society, currently in hibernation. If you're interested in reviving it, let me know.
I'm on the editorial board of the Journal of Number Theory.
If you wish to submit an article, I would prefer you to use the online submission system at this link.
A biennial conference series in Arithmetic Geometry has been held in Stellenbosch since 1997.
See below for some of the recent ones: 2005 2007 2009 2011 2013 2015 (held at AIMS)
I work in Number Theory. More specifically, my main interst lies in Arithmetic Geometry, where I work on Elliptic curves, Drinfeld modules, Drinfeld modular forms
and related topics. I also sometimes work on more elementary things, such as Ducci sequences.
Publications
Note: for copyright reasons, some of the following PDF files are not the final, published versions.
Discovery and analysis
of gamma doradus type pulsations in the F0 IV star HR 2740 QW pup,
Mon. Not. R. Astron. Soc.292 (1997), 621-630.
(4th author, with E. Poretti, C. Koen, P. Martinez, D. de Alwis and H. Haupt)
[PDF]
Line profile variations in the spectra of the gamma Dor star HR 2740,
In: IAU Symposium 185
"New Eyes to See Inside the Sun and Stars", (F.-L. Deubner, J. Christensen-Dalsgaard, D. Kurtz, eds) Kyoto, Japan, 18-22 August, 1997, p. 387.
(5th author, with E. Poretti, L. Mantegazza, C. Koen, P. Martinez,
D. De Alwis and H. Haupt).
[PDF]
Strategy and complexity of the game of squares.
Bull. London. Math. Soc30 (1998), 274-282.
(With Mike Robson)
[PDF]
A note on a paper by Glaser and Schöffl.
Fibonacci Quart.36.5 (1998), 463-466.
[PDF]
Ducci sequences over abelian groups.
Comm. Algebra27.12 (1999), 5999-6013.
[PDF]
Heights of CM points on complex affine curves.
Ramanujan J.5 (2001), 311-317.
[PDF]
Distinguished liftings and the André-Oort conjecture.
Quaest. Math.25(3) (2002), 363-380.
[PDF]
La conjecture d'André-Oort pour le produit de deux
coubres modulaires de Drinfeld. C. R. Math. Acad. Sci. Paris335 (2002), no. 11, 867--870.
[PDF]
Higher Heegner points on elliptic curves over function
fields. J. Number Theory104 (2004), 315-326.
[PDF]
Images of isogeny classes on modular elliptic curves.
Math. Res. Lett.11 (2004), 649-651.
[PDF]
The André-Oort conjecture for products of Drinfeld modular
curves.
J. reine angew. Math.579 (2005), 115-144.
[PDF]
Monodromy groups associated to non-isotrivial Drinfeld modules
in generic characteristic. In:
"Number Fields and Function Fields - Two Parallel Worlds",
(G. van der Geer, B. Moonen, R. Schoof, eds.),
Progress in Mathematics, 239,
p61-69,
Birkhäuser Verlag, 2005.
(With Richard Pink.)
[PDF]
CM points on products of Drinfeld modular curves.
Trans. Amer. Math. Soc.359 (2007), 1351-1374.
[PDF]
Ducci sequences and cyclotomic polynomials.
Finite Fields Appl.13 (2007), 293-304.
(With Ernest Lötter and Brink van der Merwe.)
[PDF]
Ducci sequences in higher dimensions. Integers: Electronic Journal of Combinatorial
Number Theory7 (2007), #A24.
[PDF]
The André-Oort conjecture for Drinfeld modular varieties.
C. R. Math. Acad. Sci. Paris, Ser. I, 344 (2007), 733-736. [PDF]
Heegner points and the rank of elliptic curves over large extensions of global fields.
Canadian J. Math.60 (2008), no.3, 481-490. (With Bo-Hae Im)
[PDF]
Drinfeld modular polynomials in higher rank.
J. Number Theory129 (2009), 59-83. (With Hans-Georg Rück)
[PDF]
Torsion bounds for elliptic curves and Drinfeld modules.
J. Number Theory130 (2010), 1241-1250.
[PDF]
Ducci sequences and cyclotomic fields.
J. Difference Equ. Appl.16 (2010), no. 7, 847-862.
[PDF]
Special subvarieties of Drinfeld modular varieties.
J. reine angew. Math.668 (2012), 35-57.
[PDF]
Newton identities for Weierstrass products.
Amer. Math. Monthly119, no. 9 (2012), 796-799.
[PDF]
Explicit Drinfeld moduli schemes and Abhyankar's generalized iteration conjecture.
J. Number Theory160 (2016) 432-450.
[PDF]
Drinfeld modular polynomials in higher rank II: Kronecker congruences.
(With Hans-Georg Rück).
J. Number Theory165 (2016) 1-14.
[PDF]
A note on Gekeler's h-function. To appear in Arch. Math. (2016). [PDF]
Academic qualifications
B.Sc, Hons.B.Sc, University of Stellenbosch, 1997, 1998.
D.E.A., Université Pierre et Marie Curie (Paris 6), 1999.
Ph.D., Université Denis Diderot (Paris 7), 2002.
(Thesis: Sur la conjecture d'André-Oort et courbes
modulaires de Drinfeld (On the André-Oort conjecture
and Drinfeld modular curves)
[PDF]
, Supervisor: Marc Hindry)
Safidy Nandrianina Ratsimbazafy, M.Sc (AIMS), 2015, "The law of quadratic reciprocity"
Tseliso Paul Lekhoaela, M.Sc (AIMS), 2014, "The perfect numbers"
Taboka Prince Chalebgwa, M.Sc (AIMS), 2014, "Critical points of complex polynomials"
Dirk Basson, Ph.D, 2014, "On the coefficients of Drinfeld modular forms of higher rank".
Yann Ranorovelonalohotsy, M.Sc, 2014, "The Riemann Hypothesis for the zeta function of a function field over a finite field".
AIMS Postgraduate Diploma, 2012, "Meromorphic functions and vector fields".
Darlison Nyirenda, AIMS Postgraduate Diploma, 2011, "Reduction of elliptic curves"
Alex Samuel Bamunoba, M.Sc cum laude, 2011, "Cyclotomic polynomials (in the parallel worlds of number theory)";
AIMS Postgraduate Diploma, 2010, "Cyclotomic Polynomials".
Koos van Zyl, Ph.D 2011. "On the Latimer-MacDuffee Theorem for polynomials over finite fields."
Emma Owusu Kwaakwah, AIMS Postgraduate Diploma, 2010, "Ducci Sequences."
Tahina Rakotoniaina: M.Sc cum laude, 2008, "Explicit class field theory for rational function fields";
AIMS Postgraduate Diploma, 2006, "Function field arithemtic".
Dimbinaina Ralaivaosaona, AIMS Postgraduate Diploma, 2007. "The Prime Number Theorem".
Paul Joubert: M.Sc cum laude, 2006. "Geometric actions of the absolute Galois group".
Courses Offered
2016
Mathematics (Bio) 124 (Basic calculus for biology students, 1st semester)
Mathematics 278/378 (Introduction to Proofs, 1st term)