Publications de Felix Ulmer
Articles
de revues
- Skew
codes of prescribed distance or rank (pdf file) (avec L.
Chausade et P. Loidreau)
Designs, Codes and Cryptography, 50(3),
267-284 (2009)
- Coding
with skew polynomial rings
(pdf file)
(avec D.
Boucher)
Journal
of Symbolic
Computation, 44, 1644-1656 (2009)
- The Lamé family of connections on the
projective line (avec F. Loray et M. van der Put)
(pdf
file)
Annales de
la Faculté des Sciences de Toulouse, 17,
371-409 (2008)
- Skew Constacyclic Codes over Galois Rings
(avec
D. Boucher et P. Solé)
Advances in
Mathematics of Communications, 2,
273-292 (2008)
- Skew Cyclic
Codes (avec D. Boucher et W. Geiselmann) (pdf
file) .
Applied Algebra
in Engineering, Communication and Computing, 18, 379-389
(2007)
- Note on Algebraic solutions of
differential equations with known finite Galois group
(ps file)
(pdf file)
Applied Algebra
in Engineering, Communication and Computing, 16, 205-218 (2005)
- Liouvillian solutions of
third order differential equations (ps
file)
(pdf
file)
Journal
of Symbolic
Computation, 36,
855-889 (2003)
- Linear Differential Operators for
Polynomial
Equations
(avec O. Cormier, M.F. Singer et B.M.
Trager).
(ps file)
(pdf file)
Journal
of Symbolic
Computation, 34,
355-398 (2002)
- Differential
equations and finite groups (avec M. van der Put) (ps
file) (pdf file),
Journal
of Algebra, 226, 920-966 (2000)
- How to Solve Linear Differential Equations: An
Outline (.ps file),.
Programming
and Computer Software, 26, 17-22 (2000)
- Liouvillian
solutions of linear differential equations of order three and higher
(avec van Hoeij, Ragot et Weil)
(ps
file) (pdf
file)
Journal
of Symbolic
Computation, 28,
589-609 (1999)
- Linear
Differential Equations and Products of Linear Forms (avec
M.F. Singer)
(.ps file)
(pdf file)
Journal of Pure and Applied Algebra, 117-118,
549-563 (1997)
- Constructing
a Third Order Linear Differential Equation (avec W.
Geiselman) (.ps
file),
Theoretical Computer Science, 187,
3-6 (1997)
- Note on Kovacic's algorithm (avec
J.A.
Weil)
(ps
file) (pdf
file)
Journal
of Symbolic
Computation, 22,
179-200 (1996)
- Necessary
Conditions for Liouvillian Solutions of (Third Order) Linear
Differential
Equations
(avec M.F. Singer) (ps file) (pdf file)
Applied Algebra
in Engineering, Communication and Computing, 6,
1-22 (1995)
- Irreducible
linear differential equations of prime order (ps
file) (pdf
file),
Journal
of Symbolic
Computation, 18,
385-401 (1994)
- Galois
Groups of Second and Third Order Linear Differential Equations
(avec M.F.
Singer)
(ps file),
(pdf file),
Journal
of Symbolic
Computation, 16,
9-36 (1993)
- Liouvillian
and Algebraic Solutions of Second and Third Order Linear Differential
Equations
(avec M.F. Singer)
(ps file),
(pdf file),
Journal
of Symbolic
Computation, 16,
37-74 (1993)
- On liouvillian solutions of linear
differential
equations
Applied Algebra
in Engineering, Communication and Computing,
2,
171-193 (1992)
Articles
dans des actes de conférences avec comité de
lecture
- Codes as modules over skew polynomial rings (avec D. Boucher)
(.pdf file)
Proceedings of the 12th IMA conference on Cryptography and Coding, Cirencester
Lecture Notes
in Computer Science, 5921, 38-55 (2009)
- Fourth order linear differential
equations with imprimitive group
(avec D. Boucher et P. Gaillard). (ps
file)
(pdf
file)
Proceedings ISSAC 2003, Philadelphia, ACM Press, 45-49 (2003)
- Computing
the Galois group of a polynomial using linear differential
equations (avec O. Cormier et M.F. Singer)
(.ps file)
Proceedings ISSAC 2000, St. Andrews, ACM Press, 78-85 (2000)
- Third Order Differential Equation
Whose Differential Galois Group
is a Simple Group with 168 Elements (avec M.F.
Singer)
Proceedings AAECC-10, Puerto Rico, May 1993, Lecture Notes
in Computer Science, 673,
316-324 (1993)
- Liouvillian Solutions of Third Order
Linear Differential Equations: New Bounds and Necessary Conditions
(avec M.F. Singer)
Proceedings of ISSAC 1992, Berkeley, ed. Paul S. Wang, ACM Press,
57-62 (1992)
- On algebraic solutions of linear differential
equations with primitive
unimodular Galois group
Proceedings of AAECC-9, New Orleans 1991, ed. H.F. Mattson, T.
Mora, T.R.N
Rao
Lecture Notes
in Computer Science, 539,
446-455 (1991)
- Liouvillian solutions of homogeneous
linear differential equations (avec
J. Calmet)
Proceedings of ISSAC 1990, Tokyo, Ed. S. Watanabe, N.
Nagata, ACM Press, 236-243 (1990)
Chapitres
de livres, autres
- Some methods to solve linear
differential equations in closed form (avec
J.A. Weil)
(pdf
file),
Algebraic
Theory of Differential Equations, éditeurs: M.
MacCallum et A.V. Mikhailov
London Mathematical
Society Lecture Note Series No. 357 (2009)
- Fehler
korrigierende Codes (pdf
file),
Computeralgebra
Rundbrief GI_DMV_GAMM, April, 32-34 (2008)
Sonderheft
zum Jahr der Mathematik 2008
(http://www.fachgruppe-computeralgebra.de/JdM/)
- Note on Kovacic's algorithm (avec
J.A. Weil),
ACM SIGSAM Bulletin, Volume 29 , Issue 2, 10-11 (April 1995)
- Entwurf von Algorithmen zur Berechnung
Liouvillescher Loesungen von linearen gewoehnlichen
Differentialgleichungen
Dissertation, Universitaet
Karlsruhe, Fakultaet fuer
Informatik ,
Verlag Dr. Kovac, Hamburg 1991.
Retour
page principale