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Plenary Lecture

MALLIAVIN CALCULUS OF BISMUT TYPE IN SEMI-GROUP THEORY


Professor Remi Leandre

Institut de Mathematiques. Universite de Bourgogne
21000. Dijon. FRANCE
E-mail: Remi.leandre@u-bourgogne.fr


Abstract:
The talk is dovided in 5 parts:

-)In the first part, we translate Malliavin Calculus of Bismut type in semi group theory, giving a sufficient condition in order a diffusion semi-group has a smooth density.

-)n the second part, we translate Varadhan estimates for hypoelliptic diffusions in semi-group theory, estimates we got a long time ago by using the Brownian motion.

-)In the third part, we translate in semi-group theory the Ben Arous and us theorem giving a sufficient condition in order an heat-kernel is strictly positive, where the Bismutian semi-distance plays an important role.

-)In the fourth part, we translate one of the result we got a long time ago by probability by using a stochastic analog of the Rothschild-Stein inhomogeneous division method.

-)In the fifth part, we translate in semi-group Bismut's ways of the Malliavin Calculus for Poisson process where the generator is an integro-differential operator.

Brief Biography of the Speaker:

1957: Born in Belfort (France).
1978/1981: Student Ecole Normale Superieure Saint-Cloud.
1980: Agregation de Mathematiques. Rank: 5.
1982/1984: National service at the University of Monastir (Tunisia).
1984: These de Troisieme cycle. Directeur: J.M. Bismut.
1984/1988: assistant at the Universite de Besancon.
1987: Habilitation a diriger les recherches. Universite de Besancon. Directeur: J.M. Bismut.
1988: Bronze medal of C.N.R.S.
1988/1994: Charge de recherches Premiere classe C.N.R.S. Universite de Strasbourg.
1989: Rollo Davidson Price.
1994/2004: Directeur de recherches Seconde Classe. C.N.R.S. Universite de Nancy.
2003: Editor of a special issue ”Probability and geometry” of the Journal ”Infinite dimensional analysis, quantum probability and related topics”.
2004: Directeur de recherches Seconde Classe. Universite de Dijon.

Organiser of various conferences:

* ”Loops spaces” (Strasbourg 1994)with S. Paycha and T. Wuerzbacher.
* ”Probability and geometry” (Nancy 1999).
* ”Infinite dimensional analysis” (C.I.R.M. 2001).
* I have organized a session ”Analysis on path spaces” at the Satellite Conference of Stochastic Analysis of I.C.M. at Beijing (2002).
* ”Infinite dimensional analysis and path integrals” (C.I.R.M 2004) with C. De Witt-Morette.
* ”Stochastic analysis and mathematical physics” (Dijon. 2006).

 


 




 

 
 
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