**Conference talks in international conferences
**

39)
04/2018: Algebra and Discrete Mathematics Days, Aristotelous
University, Thessaloniki, Greece: "Maximal differential
uniformity".

38) 06/2017: The 13th
International Conference on Finite Fields and their Applications
(Fq13), Gaeta (Italy), June 04-10th 2017; talk: "Second
order differential uniformity".

37)
02/2016: Algebraic geometry for coding theory and
cryptography, Institut for Pure and Applied Mathematics (IPAM),
University of California Los Angeles (UCLA), USA, February
22-26th 2016:

"Number of points of algebraic sets".

**
36)** 05/2015: Conference ``Arithmetic, Geometry,
Cryptography and Coding Theory - XV'', C.I.R.M. (France), may
18-22 2015 ; talk (with A. Iezzi): "Towards maximal singular
curves over finite fields".

35) 09/2014: Diophantine Approximation and Transcendence, C.I.R.M. (France), 15-19 september 2014 ; talk (with D. Poulakis): "Integral solutions of Thue equations".

34) 05/2014: Antalya
Algebra Days, Antalya (Turkey), 09-13 may 2014 ; talk: "Algebraic
geometry and Abelian varieties over finite fields".

33) 12/2013: Algebraic
Geometry and Coding Theory - India Conference (India, Bombay),
02-06 december 2013 ; talk: "On three-valued Weil sums".

32) 09/2013: CAI'2013 :
5th International Conference on Algebraic Informatics,
Porquerolles Island (France), 03-06 september 2013 ; talk :
``On a conjecture of Helleseth''.

31) 06/2013: Conference ``Arithmetic, Geometry, Cryptography and Coding Theory - XIV'', C.I.R.M. (France), 03-07 june 2013 ; talk: ``On the number of rational points on Prym varieties''.

30) 09/2012 :
YACC 2012 (Yet Another Conference on Cryptography), Porquerolles
(France), 24-28 september 2012 ; talk: ``On the number of points
on Abelian and Jacobian varieties over finite fields''.

29) 01/2011:
Workshop de l'Université de Polynésie Française, Tahiti ; talk :
"Sur le spectre différentiel des fonctions sur les corps finis".

28) 10/2010:
YACC 2010 (Yet Another Conference on Cryptography), Porquerolles
(France), 04-08 october 2010 ; talk : ``On the higher term of the
differential spectrum of a function''.

27) 06/2010:
WAIFI 2010 (Workshop on the Arithmetic of Finite Fields), Istanbul
(Turkey), 27-30 june 2010 ; talk : ``Lower bounds for the number
of rational points on Jacobian varieties over finite fields''.

26) 09/2009: Workshop on
Sequences, Codes and Curves, Antalya (Turkey), 25-29 september
2009 ; talk : ``Number of points on Abelian, Jacobians and Prym
varieties''.

25) 07/2009:
Conference ``Finite fields and theirs applications'', Dublin
(Ireland), 13-17 july 2009 ; talk (with S. Haloui): ``Jacobians
and Prym varieties''.

24) 07/2009: Conference ``Finite fields and theirs applications'', Dublin (Ireland), 13-17 july 2009 ; talk (with F. Rodier): ``Polynomials on F_2^m with good resistance to cryptanalysis".

23) 04/2009:
Conference ``Geocrypt'', Pointe-à-Pitre (Guadeloupe), april 27-may
1st 2009 ; talk : ``On Prym varieties over finite fields''.

22) 03/2009:
Conference ``Arithmetic, Geometry, Cryptography and Coding Theory
- XII'', C.I.R.M. (France), march 30-april 03 2009 ; talk : ``On
almost APN functions''.

21) 12/2007: Macquarie University, Sydney (Australia) ; talk : ``Hyperelliptic curves and 2-torsion points''.

20) 11/2007: Conference ``Arithmetic, Geometry, Cryptography and Coding Theory - XI'', C.I.R.M. (France), 05-09 november 2007 ; talk : ``On the Gauss conjecture for function fields''.

19) 04/2006: Workshop de l'Université de Polynésie Française, Tahiti ; talk : "La fonction zêta dans tous ses états".

18) 12/2005: Université de Laval, Québec (Canada) ; talk : ``Logarithme discret et variétés abéliennes''.

17) 09/2005: Conference ``Arithmetic, Geometry and Coding Theory - X'', C.I.R.M. (France), 26-30 september 2005 ; talk : ``Cyclic codes with few different weights''.

16) 03/2005: International Workshop on Coding and Cryptography, WCC 2005, march 2005, Bergen, Norway, P. Charpin and O. Ythrehus : talk (with P. Langevin): ``On the weights of irreducible cyclic codes''.

15) 11/2004: Workshop ``Nombres de points sur un corps fini'', Université de la Méditerranée, 29 et 30 novembre 2004 (F. Rodier) ; invited speaker; talk : ``Fonction zêta des courbes sur un corps fini''.

14) 05/2003: Conference ``Arithmetic, Geometry and Coding Theory - IX'', CIRM, France, 19-23 may 2003 ; talk : ``Zeta function and bounds ``à la Weil'' ''.

13) 03/2003: Conference ``Computational Aspects of Algebraic Curves and Cryptography'', University of Florida (U.S.A.), 3-7 march 2003 (G.and Frey H. Voelklein) ; invited speaker ; talk : ``Zeta function of connected curves over finite fields''.

12) 01/2002: Université de Thessalonique (Grèce) ; talk : ``Coverings of algebraic curves and the holomorphic Artin conjecture''.

11) 05/2001: Six-th International Conference ``Finite Fields and theirs applications'', Oaxaca (Mexique), 21-25 may 2001, talk : ``Connected curves over finite fields''.

10) 05/2001: Conference ``Arithmetic, Geometry and Coding Theory - VIII'', C.I.R.M. (France), 14-18 may 2001 ; talk : ``Divisibility of zeta functions in a covering of curves''.

9) 04/1998: International conference on coding theory, cryptography and related areas (H. Tapia-Recillas), Guanajuato (Mexique) ; talk: ``Class number in quartic functions fields in even characteristic''.

8) 07/1995: Third International Conference on Finite Fields and Theirs Applications, Glasgow (Ecosse), 11-14 July 1995, (S.D. Cohen), talk : "Class number in biquadratic function fields".

7) 09/1993: Conference 18 èmes Journées Arithmétiques, Bordeaux (France), 13-17 September 1993, (J. Martinet), talk : "Courbes singuli\`eres et nombre de points sur un corps fini".

6)
06/1993: Second International Conference on Finite Fields :
Theory, Applications and Algorithms, University of Nevada, Las
Vegas (U.S.A.), 17-21 june 1993 (P. Shiu), talk: "Coverings of
Singular curves over finite fields".

5)
06/1993: Second International Conference on Finite Fields :
Theory, Applications and Algorithms, University of Nevada, Las
Vegas (U.S.A.), 17-21 june 1993 (P. Shiu), talk: "Weil
inequality for singular curves".

4) 10/1992: Conference Eurocode, Udine (Italie), Octobre 1992, (P. Camion), talk: "Algebraic Geometric Codes on Surfaces".

3) 10/1991: Conference AAECC-9, New Orleans (U.S.A.), October 1991 (H.F. Mattson, T. Mora, T.R.N. Rao), talk : "Reed-Muller Codes on Quadrics and Maximal Hypersurfaces".

2) 10/1991: Conference Algebraic Geometry and Coding Theory 3, 17-21 june 1991, C.I.R.M., Marseille, Luminy (H. Stichtenoth, M. Tsfasman), talk : "Reed-Muller Codes Associated to Projective Algebraic Varieties".

1) 03/1991: Workshop de Sophia-Antipolis (P. Solé) : Codes, Graphes, Caractères, (25, 26, 27 march 1991), talk : "Sections hyperplanes et intersection de quadriques. Application aux codes correcteurs d'erreurs."