National and international research collaboration has always been an important part of the philosophy of the institute. A long list of successful research work, common conferences and workshops as well as papers published together will colleagues from all over the world are some of the results. Researcher and students exchange programs with different universities, lectures held abroad and international guests are not only aiming at research results, but equally maintain good contacts and friendships.

Below we give a list of active collaborators with whom ORCOS has joint research in the indicated periods. For the period 2014- 2018 the list will be periodically updated.

• Sebastian Anita
  Faculty of Mathematics, Alexandru Ioan Cuza University, IASI, Romania
• Sergey Aseev 
  Moscow State University and IIASA (Laxenburg)
  Topic: Optimal control on infinite horizon
• Jonathan P. Caulkins
  Heinz School of Public Policy and Management, Carnegie Mellon University, Pittsburgh, USA
  Topic: Optimal control of drug consumption
• Radek Cibulka
  University of West Bohemia
  Topic: Regularity ind iterative procedures for generalized equations
• Alexey Davydov
  Functional Analysis and Its Applications Department, Vladimir State University, Russia
  Topic: Periodic utilization of renewable resources
• Asen Dontchev
  Mathematical Reviews and University of Michigan, USA
  Topic: Metric regularity under perturbations
• Fouad El Ouardighi
  ESSEC Business School, Paris, France
• Elza Farkhi
  School of Mathematical Sciences, Tel-Aviv University, Israel
• Richard F. Hartl
  Institut für Betriebswirtschaftslehre, Universität Wien, Österreich
• Edward Kaplan
  Yale School of Management/USA
  Yale School of Public Health/USA
  Yale School of Engineering and applied Science/USA
• Peter M. Kort
  Department of Econometrics, Tilburg University, Netherlands
  Topic: Economics of crime, tourism and environment
• Mikhail Krastanov
  Institute of Mathematics and Informatics, Bulgarian Academy of Sciences
  Topic: 
  (i) Numerical approximations of control systems; 
  (ii) Controllability
• Moshe Kress
  Naval Postgraduate School, Monterey/USA
• Luca Lambertini
  University of Bologna, Italy
• George Leitmann
  University of California, Berkeley/USA
• Andreas Novak
  Institut für Betriebswirtschaftslehre, Universität Wien, Österreich
• Nikolai Osmolovskii
  Moscow State University of Civil Engineering and University of Technology and Humanities in Radom, Poland
  Topic: Control of age-structured systems
• Alain Pietrus
  Dept. de Mathématiques, Université des Antilles et de la Guyane, Guadeloupe (France)
  Topic: discretization of optimal control problems
• Michael Polis
  Oakland University, Michigan, USA
  Topic: Modelling and control of batteries
• Marc Quincampoix
  University of Brest, France
  Topic: Hölder Metric regularity and approximations of bang-bang optimal control problems
• R.T. Rockafellar
  Department of Mathematics, University of Washington
  Topic: path-following methods for variational inequalities
• Tsvetomir Tsachev
  Institute of Mathematics and Informatics, Bulgarian Academy of Sciences
  Topic: Control of heterogeneous systems
• Georges Zaccour
  HEC Montreal, Canada
  
  
  
  

• Sergey Aseev 
  Moscow State University and IIASA (Laxenburg)
  Topic: Optimal control on infinite horizon
• Thierry Brechet
  Université catholique de Louvain
  Topic:
  (i) Emission permits;
  (ii) Economic control models for the global warming
• Jonathan P. Caulkins
  Heinz School of Public Policy and Management, Carnegie Mellon University, Pittsburgh, USA
  Topic: Optimal control of drug consumption
• Alexey Davydov
  Functional Analysis and Its Applications Department, Vladimir State University, Russia
  Topic: Periodic utilization of renewable resources
• Asen Dontchev
  Mathematical Reviews and University of Michigan, USA
  Topic: Metric regularity under perturbations
• Salvatore Federico
  Laboratoire de Probabilités et Modèles Aléatoires du CNRS de l'Université Paris
  Topic: Dynamic programming in for problems on a controllable spatial domain
• Michel Geoffroy
  Dept. de Mathématiques, Université des Antilles et de la Guyane, Guadeloupe (France)
  Topic: metric regularity of variational inequality
• Richard F. Hartl
  Institut für Betriebswirtschaftslehre, Universität Wien, Österreich
• Peter M. Kort
  Department of Econometrics, Tilburg University, Netherlands
  Topic: Economics of crime, tourism and environment
• Mikhail Krastanov
  Institute of Mathematics and Informatics, Bulgarian Academy of Sciences
  Topic:
  (i) Numerical approximations of control systems; 
  (ii) Controllability
• Andreas Novak
  Institut für Betriebswirtschaftslehre, Universität Wien, Österreich
• Alain Pietrus
  Dept. de Mathématiques, Université des Antilles et de la Guyane, Guadeloupe (France)
  Topic: discretization of optimal control problems
• Marc Quincampoix
  University of Brest, France
  Topic: Hölder Metric regularity and approximations of bang-bang optimal control problems
• R.T. Rockafellar
  Department of Mathematics, University of Washington
  Topic: path-following methods for variational inequalities
• Carl P. Schmertmann
  Center for Demography and Population Health, Florida State University, USA
• Nikolaos Stilianakis
  Joint Research Centre, European Commission, Ispra, Italy
  Topic: Dynamics of diseases in heterogeneous populations
• Tsvetomir Tsachev
  Institute of Mathematics and Informatics, Bulgarian Academy of Sciences
  Topic: Control of heterogeneous systems
• Franz Wirl
  Institut für Betriebswirtschaftslehre, Universität Wien, Österreich
  Topic: Optimal control theory and dynamic games applied to various socio-economic model