# Stefan Geiss

Contact search available for JYU staff members.

ORCID link: http://orcid.org/0000-0001-6846-1127

Active JYU affiliations

- Department of Mathematics and Statistics, Professor

Research interests

Our research concerns Stochastic Analysis and its interactions with Interpolation- and Approximation Theory. One focus is the investigation of Backward Stochastic Differential Equations under specifications that are relevant in nowadays applications (for example in Optimization, Finance, and Insurance), in particular their approximation and their connection to Partial Differential Equations.

Projects as Principal investigator

- Stochastic Analysis and Nonlinear Partial Differential Equations, Interactions and Applications
- Academy of Finland

Publications

- Weighted bounded mean oscillation applied to backward stochastic differential equations (2020) Geiss, Stefan; et al.; A1; OA
- First time to exit of a continuous Itô process : general moment estimates and L1-convergence rate for discrete time approximations (2017) Bouchard, Bruno; et al.; A1; OA
- Permutation invariant functionals of Lévy processes (2017) Baumgartner, Florian; et al.; A1; OA
- On fractional smoothness and Lp-approximation on the Wiener space (2015) Geiss, Stefan; et al.; A1; OA
- Fractional smoothness of functionals of diffusion processes under a change of measure (2014) Geiss, Stefan; et al.; A1; OA
- A note on Malliavin fractional smoothness for Lévy processes and approximation (2013) Geiss, Christel; et al.; A1; OA
- Generalized fractional smoothness and $L_p$-variation of BSDEs with non-Lipschitz terminal condition (2012) Geiss, Christel; et al.; A1; OA
- Fractional smoothness and applications in finance (2011) Geiss, Stefan; et al.; A3; OA
- On singular integral and martingale transforms (2010) Geiss, Stefan; et al.; A1
- Extrapolation of vector-valued rerrangement operators (2009) Geiss, Stefan; et al.; A1; OA
- Weak convergence of error processes in discretizations of stochastic integrals and Besov spaces (2009) Geiss, Stefan; et al.; A1
- Haar type and Carleson constants (2008) Geiss, Stefan; et al.; A1
- Interpolation and approximation in L_2(gamma) (2007) Geiss, Stefan; et al.; A1
- On an approximation problem for stochastic integrals where random time nets do not help (2006) Geiss, Christel; et al.; A1
- A remark on extrapolation of rearrangement operators on dyadic $H^s$, $0 (2005) Geiss, Stefan; et al.; A1
- Weighted BMO and discrete time hedging within the Black-Scholes model (2005) Geiss, Stefan; A1
- On approximation of a class of stochastic integrals and interpolation (2004) Geiss, Christel; et al.; A1
- On the approximation of stochastic integrals and weighted BMO (2002) Geiss, Stefan; A3
- Quantitative approximation of certain stochastic integrals (2002) Geiss, Stefan; A1
- Absolutely L_(exp_q)-summing norms of diagonal operators in ell_r and limit orders of L_exp-summing operators (2001) Geiss, Stefan; A1