Hartung Ferenc
szakmai önéletrajza
2020. január

Végzettség:

1986 május Okleveles matematikus, József Attila Tudományegyetem, Szeged
oklevél száma: 64/1986
1995 január PhD alkalmazott matematikából, University of Texas at Dallas, USA
Disszertáció címe: On classes of functional differential equations with state-dependent delays,  Témavezető: Janos Turi
1997 július PhD matematika tudományszakból, József Attila Tudományegyetem, Szeged, oklevél száma: TTK: 60/1997. R.sz. (külföldi PhD fokozat honosítása)
2010 december
habilitáció, Szegedi Tudományegyetem
2012 október
DSc (az MTA doktora)
Disszertáció címe: Differentiability of solutions with respect to parameters in differential equations with state-dependent delays

Munkahelyek:

1986 szept. - 1989 szept. tudományos segédmunkatárs
Szent-Györgyi Albert Orvostudományi Egyetem Számítástechnikai Központ
1989 okt. - 1993 júl. tudományos munkatárs
Szent-Györgyi Albert Orvostudományi Egyetem Számítástechnikai Központ (1991 augusztustól 1993 júliusig külföldi tanulmányúton)
1991 szept. - 1994 dec. Teaching Assistant (doktorandusz) 
University of Texas at Dallas, USA
1995 jan. - 1995 aug. Lecturer (óraadó tanár) 
University of Texas at Dallas, USA
1995 szept. - 1996 máj. Lecturer (óraadó tanár)
Virginia Polytechnic Institute & State University, USA
1996 jún. Research Associate
Virginia Polytechnic Institute & State University, USA
1996 aug. - 1998. febr. egyetemi adjunktus
Veszprémi Egyetem, Matematikai és Számítástechnikai Tanszék
1998 márc. - 2012 aug. egyetemi docens
Pannon Egyetem (korábbi nevén: Veszprémi Egyetem), Matematika Tanszék
2012 szept. - jelenleg egyetemi tanár
Pannon Egyetem, Matematika Tanszék

Szakmai érdeklődés:

Funkcionál-differenciálegyenletek, differenciaegyenletek, numerikus approximáció, paraméter becslés.

Publikációs lista hivatkozásokkal együtt az MTMT adatbázisból


Megjelent tudományos közlemények:

referált nemzetközi folyóirat cikkek:

  1. S. P. Pradhan, F. Hartung, J. Turi, Dynamics in a Respiratory Control Model With Two Delays, Applications and Applied Mathematics 14:2 (2019) 863-874.
  2. Awwad E, Győri I, Hartung F, BIBO stability of discrete control systems with several time delays, Miskolc Mathematical Notes 19:1 (2018) 95-109.
  3. I Győri, F Hartung, N A Mohamady, Permanence in a class of delay differential equations with mixed monotonicity, Electronic Journal of Qualitative Theory of Differential Equations 2018:53 (2018) 1-28.
  4. I. Győri, F. Hartung, N. A. Mohamady, Boundedness of positive solutions of a system of nonlinear delay differential equations, Discrete and Continuous Dynamical Systems - Series B, 23:2 (2018) 809-836. (PDF)
  5. I. Győri, F. Hartung, N. A. Mohamady, Existence and uniqueness of positive solutions of a system of nonlinear algebraic equations, Period. Math. Hung., 75:1 (2017) 114-127. DOI 10.1007/s10998-016-0179-3 (PDF)
  6. F. Hartung, Differentiability of solutions with respect to the delay function in functional differential equations, Electron. J. Qual. Theory Differ. Equ. 2016, No. 73, 1-16
  7. F. Hartung, Nonlinear variation of constants formula for differential equations with state-dependent delays, J. Dyn. Differ. Equ. (2015), DOI 10.1007/s10884-015-9445-y (PDF)
  8. I. Győri, F. Hartung, N. A. Mohamady, On a nonlinear delay population model, Applied Mathematics And Computation, 270 (2015) 909-925. DOI 10.1016/j.amc.2015.08.090 (PDF)
  9. F. Hartung, On second-order differentiability with respect to parameters for differential equations with state-dependent delays, Journal of Dynamics and Differential Equations, 25 (2013) 1089-1138. DOI 10.1007/s10884-013-9330-5.  (PDF)
  10. F. Hartung, Parameter Estimation by Quasilinearization in Differential Equations with State-Dependent Delays, Discrete and Continuous Dynamical Systems-B, 18:6 (2013) 1611-1631. (PDF)
  11. F. Hartung, On Differentiability of Solutions with respect to Parameters in Neutral Differential Equations with State-Dependent Delays, Annali di Matematica Pura ed Applicata, 192 (2013) 17-47. DOI 10.1007/s10231-011-0210-5. (PDF)
  12. E. Awwad, I. Győri, F. Hartung, BIBO stabilization of feedback control systems with time dependent delays, Applied Mathematics and Computation, 219 (2012) 1485-1509, doi:10.1016/j.amc.2012.09.065 (PDF)
  13. I. Győri, F. Hartung, Asymptotic behavior of nonlinear difference equations, Journal of Difference Equations and Applications, 18:9 (2012) 1485-1509. DOI 10.1080/10236198.2011.574619. (PDF)
  14. F. Hartung, Differentiability of solutions with respect to the initial data in differential equations with state-dependent delays, Journal of Dynamics and Differential Equations, 23:4 (2011) 843-884, DOI 10.1007/s10884-011-9218-1. (PDF)
  15. I. Győri, F. Hartung, Asymptotically exponential solutions in nonlinear integral and differential equations, J. Differential Equations 249 (2010) 1322-1352. (PDF)
  16. F. Hartung, Linearized Stability for a Class of Neutral Functional Differential Equations with State-Dependent Delays, J. Nonlinear Analysis: Theory, Methods and Applications, 69 (2008) 1629–1643. (PDF)
  17. I. Győri, F. Hartung, On Numerical Approximation using Differential Equations with Piecewise-Constant Arguments, Periodica Mathematica Hungarica, 56:1 (2008) 55-69. (PDF)
  18. I. Győri, F. Hartung, Stability results for Cohen-Grossberg neural networks with delays, Int. J. Qualitative Theory of Differential Equations and Applications, 1:2 (2007) 142-156. (PDF)
  19. I. Győri, F. Hartung, Exponential Stability of a State-Dependent Delay System, Discrete and Continuous Dynamical Systems - Series A, 18:4 (2007) 773-791. (PDF)
  20. F. Hartung, Differentiability of Solutions with respect to Parameters  in Neutral Differential Equations with State-Dependent Delays, J. Math. Anal. Appl.,324:1 (2006) 504-524.  (PDF)
  21. F. Hartung, T. Insperger, G. Stépán, J. Turi, Approximate stability charts for milling processes using semi-discretization, Applied Mathematics and Computation, 174:1 (2006) 51-73.  (PDF)
  22. I. Győri, F. Hartung, Fundamental solution and asymptotic stability of linear delay equations, Dyn. Contin. Discrete Impuls. Syst., 13:2 (2006) 261-288. (PDF)
  23. F. Hartung, Linearized Stability  in Periodic Functional Differential Equations with State-Dependent Delays, J. Computational and Applied Mathematics, 174 (2005) 201-211.  (PDF)
  24. I. Győri and F. Hartung, Stability analysis of a single neuron model with delay, J. Computational and Applied Mathematics, 157:1 (2003) 73-92.  (PDF)
  25. I. Győri and F. Hartung, On equi-stability with respect to parameters in functional differential equations, Nonlinear Functional Analysis and Applications, 7:3 (2002) 329-351.  (PDF)
  26. I. Győri and F. Hartung, Numerical approximation of neutral differential equations on infinite interval, J. Difference Eqns Appl., 8:11 (2002) 983-999.  (PDF)
  27. F. Hartung, Parameter estimation by quasilinearization in functional differential equations with state-dependent delays: a numerical study, J. Nonlinear Analysis: Theory, Methods and Applications, 47:7 (2001) 4557-4566.  (PDF)
  28. I. Győri and F. Hartung, Preservation of stability in a linear neutral differential equation under delay perturbations, Dynamic Systems and Applications, 10 (2001) 225-242.  (PDF)
  29. I. Győri and F. Hartung, Stability in delay perturbed differential and difference equations, In Topics in Functional Differential and Difference Equations, Fields Institute Communications, Vol. 29 (2001) 181-194.  (PDF)
  30. I. Győri and F. Hartung, On the exponential stability of a state-dependent delay equation,  Acta Sci. Math. (Szeged), 66 (2000) 71-84. (PDF)
  31. F. Hartung, T. L. Herdman and J. Turi, Parameter identifications in classes of neutral differential equations with state-dependent delays, J. Nonlinear Analysis: Theory, Methods and Applications, 39:3 (2000) 305-325. (PDF)
  32. I. Győri, F. Hartung and J. Turi, Preservation of stability in delay equations under delay perturbations, J. Math. Anal. Appl., 220 (1998) 290-312.  (PDF
  33. F. Hartung, T. L. Herdman and J. Turi, Parameter identification in classes of hereditary systems of neutral type, Applied Mathematics and Computation, 89 (1998) 147-160.  (PDF)
  34. F. Hartung, On differentiability of solutions with respect to parameters in a class of functional differential equations, Functional Differential Equations, 4:1-2 (1997) 65-79.  (PDF)
  35. F. Hartung and J. Turi, Identification of parameters in delay equations with state-dependent delays, J. Nonlinear Analysis: Theory, Methods and Applications, 29:11 (1997) 1303-1318.  (PDF)
  36. F. Hartung, T. L. Herdman and J. Turi, On existence, uniqueness and numerical approximation for neutral equations with state-dependent delays, Applied Numerical Mathematics, 24:2-3 (1997) 393-409.  (PDF)
  37. F. Hartung and J. Turi, On differentiability of solutions with respect to parameters in state-dependent delay equations, J. Differential Equations, 135:2 (1997) 192-237.  (PDF)
  38. I. Győri, F. Hartung and J. Turi, On numerical approximations for a class of differential equations with time- and state-dependent delays, Applied Mathematics Letters, 8:6 (1995) 19-24. (PDF)
  39. F. Hartung and J. Turi, On the asymptotic behavior of the solutions of a state-dependent delay equation, Differential and Integral Equations, 8:7 (1995) 1867-1872. (PDF)

könyvrészlet:

  1. F. Hartung, J. Turi, Parameter Identification in a Respiratory Control System Model, in Batzel J J, Bachar M, Kappel F (ed.) Mathematical Modeling and Validation in Physiology: Applications to the Cardiovascular and Respiratory Systems, Berlin ; Heidelberg: Springer Verlag, 2013. pp. 105-118. (Lecture Notes in Mathematics; 2064.) Mathematical Biosciences Subseries( PDF)
  2. I. Győri, F. Hartung, On the Exponential Stability of a Nonlinear State-Dependent Delay System, in Advances in Mathematical Problems in Engineering Aerospace and Sciences, vol.3, Advances in Nonlinear Analysis: Theory, Methods and Applications, ed. S. Sivasundaram, J. Vasundhara Devi, Z. Drici, F. Mcrae. Cambridge, UK: Cambridge Scientific Publishers Ltd, 2009, 39-48. (PDF)
  3. F. Hartung, T. Krisztin, H.-O. Walther, and J. Wu, Functional differential equations with state-dependent delay: theory and applications, in Handbook of Differential Equations: Ordinary Differential Equations, volume 3, edited by A. Canada, P. Drábek and A. Fonda, Elsevier, North-Holand, 2006, 435-545. (PDF)
  4. F. Hartung and J. Turi, Stability in a class of functional differntial equations with state-dependent delays, in Qualitative Problems for Differential Equations and Control Theory, ed. C. Corduneanu, Word Scientific, 1995, 15-31. (PDF)

konferenciakiadvány:

  1. J. Radó, F. Hartung, P. Iványi, An Investigation of the Convergence of Mesh Smoothing, in B.H.V. Topping, L.F. Costa Neves, R.C. Barros, (Editors), Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing, Civil-Comp Press, Stirlingshire, UK, Paper 282, 2009. doi:10.4203/ccp.91.282
  2. J. Radó, P. Iványi and F. Hartung, Triangular Based Finite Element Mesh Smoothing, Triangular Based Finite Element Mesh Smoothing, Proceedings of the 26th International Conference Science in Practice, Osijek, Croatia, May 2008, J.J. Strossmayer Univ. of Osijek, 2008, 101-106.
  3. J. Radó, F. Hartung and P. Iványi, Studying the Quality Measures for Finite Element Meshes with Triangular Elements, Proceedings of the Sixth International Conference on Engineering Computational Technology, M. Papadrakakis and B.H.V. Topping, (Editors), Civil-Comp Press, Stirlingshire, Scotland, 2008, paper no. 54 (CD-ROM).
  4. F. Hartung and J. Turi, Identification of Parameters in Neutral Functional Differential Equations with State-Dependent Delays, Proceedings of 44th IEEE Conference on Decision and Control and European Control Conference ECC 2005, Seville, (Spain). 12-15 December 2005. (PDF)
  5. T. Insperger, G. Stépán, F. Hartung, J. Turi, State dependent regenerative delay in milling processes, in Proceedings of ASME International Design Engineering Technical Conferences, Long Beach CA, (2005), paper no. DETC2005-85282 (CD-ROM).  (PDF)
  6. I. Győri, F. Hartung, Stability Results for Cellular Neural Networks with Delays, Proc. 7'th Colloq. Qual. Theory Differ. Equ., Electr. J. Qual. Theor. Diff. Equ, 13 (2004) 1-14.  (PDF)
  7. I. Győri and F. Hartung, On stability of neural networks with delays, Proceedings of the conference Science, Education and Society, Žilina, Slovak Republic, September 17-19, 2003, Section No. 7., Mathematics in Interdisciplinary Context, University of Žilina, 2003, 15-18.  (PDF)
  8. F. Hartung and J. Turi, Linearized stability in functional-differential equations with state-dependent delays, Proceedings of the conference Dynamical Systems and Differential Equations (Kennesaw, GA, 2000), added volume of Discrete and Continuous Dynamical Systems, 2001, 416-425.  (PDF)
  9. I. Győri, F. Hartung and J. Turi, On numerical solutions for a class of nonlinear delay equations with time- and state-dependent delays, Proceedings of the World Congress of Nonlinear Analysts, Tampa, Florida, August 1992, Walter de Gruyter, Berlin, New York, 1996, 1391-1402.   (PDF)
  10. I. Győri, F. Hartung and J. Turi, On the effects of delay perturbations on the stability of delay difference equations, Proceedings of the First International Conference on Difference Equations, San Antonio, Texas, May 1994, eds. S. N. Elaydi, J. R. Graef, G. Ladas and A. C. Peterson, Gordon and Breach, 1995, 237-253.   (PDF)
  11. F. Hartung, T. L. Herdman and J. Turi, Identification of parameters in hereditary systems, Proceedings of ASME Fifteenth Biennial Conference on Mechanical Vibration and Noise, Boston, Massachusetts, September 1995, DE-Vol. 84-3, 1995 Design Engineering Technical Conferences, Vol 3 - Part C, ASME 1995, 1061-1066.  (PDF)
  12. F. Hartung, T. L. Herdman and J. Turi, Identification of parameters in hereditary systems: a numerical study, Proceedings of the 3rd IEEE Mediterranean Symposium on New Directions in Control and Automation, Cyprus, July, 1995, 291-298.  (PDF)
  13. I. Győri, F. Hartung and J. Turi, Stability in delay equations with perturbed time lags, Proceedings of the 32nd IEEE CDC, San Antonio, Texas, USA, 1993, 3829-3830.  (PDF)

szerkesztés

  1. F. Hartung, M. Pituk M (szerk.), Recent Advances in Delay Differential and Difference Equations, (94) Cham (Németország): Springer International Publishing, 2014. 263 p. (Springer Proceedings in Mathematics and Statistics; 94.) (ISBN:978-3-319-08250-9)

jegyzet, elektronikus jegyzet:

  1. Hartung F.: Bevezetés a numerikus analízisbe, egyetemi jegyzet (VE 1/1999), Veszprémi Egyetemi Kiadó, Veszprém, 1998; 2. kiadás: (VE 17/2004) 2004.
  2. Győri István, Hartung Ferenc, Előadásjegyzet a Matematikai analízis III. tárgyhoz. 180 oldal. 
  3. Hartung Ferenc, Előadásjegyzet a Differenciálegyenletek tárgyhoz. 109 oldal. 
  4. Győri István, Hartung Ferenc, Discrete and Continuous Dynamical Systems with Applications, 118. oldal, Moodle, Diszkrét és folytonos dinamikai rendszerek kurzus

 egyéb publikációk:

  1. F. Hartung, On second-order differentiability with respect to parameters for differential equations with state-dependent delays, arXiv:1201.0269v1 [math.DS] 31 Dec 2011. http://arxiv.org/abs/1201.0269 
  2. F. Hartung, Differentiability of solutions with respect to parameters in differential equations with state-dependent delays, Dissertation submitted for the degree
    Doctor of the Hungarian Academy of Sciences (DSc), 2011.  (PDF)
  3. F. Hartung, On classes of functional differential equations with state-dependent delays, PhD dissertation, University of Texas at Dallas, 1995.  (PDF)
  4. I. Győri, F. Hartung and J. Turi, Approximation of functional differential equations with time- and state-dependent delays by equations with piecewise constant arguments, Univ. of Minnesota, USA, IMA Preprint Series #1130, 1993.
  5. Németh János, Hartung Ferenc, Deák Andrea, Forczek Erzsébet, Számítógépes ambuláns betegnyilvántartó rendszer. Szemészet, 129; 115-117, 1992.
  6. Hartung F., Karsai J., Tordai M., Barna I., The central patient archive at SZOTE (poster, in Hungarian), Proceedings of the 15th Colloquium on Computing and Cybernetical Methods in Medicine and Biology, 1990.
  7. Karsai J., Forczek E., Hartung F., The central clinical information system at SZOTE (in Hungarian), Proceedings of the 15th Colloquium on Computing and Cybernetical Methods in Medicine and Biology, 1990, 169--175.
  8. Pavelka Z., Hartung F., Karsai J.,The PDP-PC mailing system at SZOTE (poster, in Hungarian), Proceedings of the 15th Colloquium on Computing and Cybernetical Methods in Medicine and Biology, 1990.

Konferencia előadások:

  1. Permanence in a class of delay differential equations with mixed monotonicity, 9th International Congress on Industrial and Applied Mathematics, Valencia, Spain, July 15-19, 2019. (meghívott előadás)
  2. On the quasilinearization method for a parameter estimation problem in neutral functional differential equations with state-dependent delays, 11th Colloquium on the Qualitative Theory of Differential Equations, Szeged, Hungary, June 17-21, 2019. (meghívott előadás)
  3. On the quasilinearization method for a parameter estimation problem in a class of functional differential equations with state-dependent delays, 14th IFAC Workshop on Time Delay Systems, Budapest, June 28-30, 2018
  4. Permanence in a class of delay differential equations with mixed monotonicity, Szeged Dynamics Days, June 26-27, 2018 (meghívott előadás) 
  5. On permanence of differential equations with delays, International Conference on Differential and Difference Equations and Applications, June 5-9, 2017, Amadora, Portugal (meghívott előadás)
  6. Differentiability of solutions with respect to the delay function in functional differential equations, The 6th World Congress on Engineering and Technology, October 21-23, 2016, Shanghai, China
  7. Nonlinear variation of constants formula for differential equations with state-dependent delays, 10th Colloquium on the Qualitative Theory of Differential Equations, Szeged, Hungary, 1-4 July, 2015 (meghívott előadás)
  8. On differentiability of solutions with respect to initial data in differential equations with state-dependent delays, Differential equations with variable delay Fields Institute, Toronto, Canada, May 4-8, 2015 (meghívott előadás)
  9. On neutral neutral differential equations with state-dependent delays, 10th AIMS Conference on Dynamical Systems, Differential Equations and Applications, Madrid, Spain, July 7-11, 2014. (meghívott előadás)
  10. Well-posedness and parameter identification problems in a class of neutral differential equations with state-dependent delays, International Conference on Nonlinear Differential and Difference Equations: Recent Developments and Applications, Antalya, Turkey, May 27-30, 2014. (meghívott előadás)
  11. On neutral differential equations with time-dependent delays, Szeged Dynamics Days, February 28-March 1, 2014.
  12. Asymptotic behavior of nonlinear difference equations, 18th International Conference on Difference Equations and Applications, Barcelona, Spain, July 23–27, 2012 (meghívott előadás).
  13. Smooth dependence on parameters of solutions in functional differential equations with state-dependent delays, 6th European Congress of Mathematics, Mini-symposium Infinite-dimensional Dynamical Systems with Time Delays, Kraków, Poland, July 2-8, 2012 (meghívott előadás).
  14. Parameter estimation by quasilinearization in differential equations with state-dependent delays, Recent trends in delay differential equations: models, theory and numerics, June 4-8, 2012, Cortona, Italy (meghívott előadás).
  15. Parameter estimation by quasilinearization in differential equations with state-dependent delays, Szeged – Timişoara Workshop on Differential Equations, Szeged, April 20-22, 2012.
  16. On differentiability of solutions with respect to parameters in neutral differential equations with state-dependent delays, Equadiff 2011, Loughborough, United Kingdom, August 1-5, 2011 (meghívott előadás)
  17. On second order differentiability with respect to parameters for differential equations with state-dependent delays, 9th Colloquium on the Qualitative Theory of Differential Equations, Szeged, June 28-July 1, 2011 (meghívott előadás)
  18. Asymptotic behavior of nonlinear difference equations, Progress on Difference Equations, Dublin, Ireland, May 23-27, 2011 (meghívott előadás)
  19. Smooth dependence of the solutions on initial data in state-dependent delay equations, Low dimensional structures in dynamical systems with variable time lags, American Institute of Mathematics, Palo Alto, California, USA, June 7-11, 2010 (meghívott előadás) 
  20. Asymptotic behavior of nonlinear Volterra integral equations, 8th AIMS Conference on Dynamical Systems, Differential Equations and Applications, Dresden University of Technology, Dresden, Germany, May 25-28, 2010 (meghívott előadás)
  21. On linearized stability in functional differential equations with state-dependent delays, International Workshop on State-Dependent Delay Equations, Dresden, Germany, October 12-16, 2009 (meghívott előadás).
  22. Parameter estimation by quasilinearization in functional differential equations with state-dependent delays, Workshop on delay differential equations: from theory to applications, Bristol, September 7-9, 2009 (meghívott előadás).
  23. On parameter dependence in functional differential equations with state-dependent delays, 7th International ISAAC Congress, Imperial College, London, United Kingdom, July 13-18, 2009 (meghívott szekció előadás).
  24. On linearized stability of neutral differential equations with state-dependent delays, Conference on Boundary Value Problems: Mathematical Models in Engineering, Biology and Medicine, Santiago de Compostela, Spain, September 15-20, 2008 (meghívott szekció előadás).
  25. On linearized stability in state-dependent delay equations, International Conference on Differential and Difference Equations, July 14-17, 2008, Veszprém, Hungary.
  26. On stability in functional differential equations with state-dependent delays, Fifth World Congress of Nonlinear Analysts Orlando, FL, USA, July 2-9, 2008 (meghívott szekció előadás).
  27. Neutral differential equations with state-dependent delays, Joint AARMS-CRM Workshop: Recent Advances in Functional and Delay Differential Equations, November 1-5, 2007, Halifax, Canada  (meghívott szekció előadás).
  28. Neutral differential equations with state-dependent delays, EQUADIFF 2007, August 5-11, 2007 (meghívott szekció előadás).
  29. Linearized stability in functional differential equations with state-dependent delays, Eighth Colloquium on the Qualitative Theory of Differential Equations, Szeged Hungary, June 25-28, 2007 (meghívott szekció előadás).
  30. Linearized stability in neutral differential equations with state-dependent delays, The 5th International Conference on Differential Equations and Dynamical Systems, University of Texas-Pan American, Edinburg, Texas, USA, December 16-18, 2006 (meghívott szekció előadás).
  31. On the problem of linearization for functional differential equations with state-dependent delays, Sixth International Conference on Dynamical Systems and Differential Equations, Univerity of Poitiers, Poitiers, France, June 25-28, 2006 (in invited section).
  32. On differentiability of solutions with respect to parameters in neutral differential equations with state-dependent delays, Conference on Differential & Difference Equations and Applications, Melbourne, FL, USA, Aug 1-5, 2005 (in invited section).
  33. On stability of neural networks with delays, Fourth World Congress of Nonlinear Analysts, Orlando, FL, USA, June 30-July 7, 2004. (in invited section)
  34. On differentiability of solutions of state-dependent FDEs with respect to parameters, Fifth International Conference on Dynamical Systems and Differential Equations, Pomona, CA, USA, June 16-19, 2004. (in invited section)
  35. On numerical approximation using equations with piecewise constant arguments, Delay Differential and Difference Equations with Applications, Veszprém, Hungary, August 25-29, 2003.
  36. On stability of neural network models, Seventh Colloquium on the Qualitative Theory of Differential Equations, Szeged Hungary, July 14-18, 2003.
  37. On stability of functional differential equations with state-dependent delays, Fourth International Conference on Dynamic Systems and Applications, Atlanta, USA, 2003. május 21-24. (in invited section)
  38. Stability in State-Dependent Delay Equations, Applied Mathematics and Application of Mathematics, Nice, France, 2003. február 10-13. (in invited section)
  39. Numerical Approximation of Neutral Differential Equations on Infinite Interval, Colloquium on Differential and Difference Equations, Brno, Csehország, 2002. szeptember 3-6.
  40. Asymptotic stability of functional differential equations with state-dependent delays, Equadiff 10, Conference on Differential Equations and their Applications, Prága, Csehország, 2001. augusztus 27-31.
  41. Stability in delay perturbed differential equations, Brno Colloquium on Differential and Difference Equations, Brno, Csehország, 2000. szeptember 5-8. 
  42. Parameter identification in functional differential equations with state-dependent delays, The Third World Congress of Nonlinear Analysts, Catania, Olaszország, 2000. július 19-26.
  43. Preservation of stability in functional differential equations under delay perturbations, Sixth Colloquium on the Qualitative Theory of Differential Equations, Szeged, 1999. augusztus.
  44. Parameter identification in functional differential equations, Borůvka Mathematical Symposium, Brno-Valtice, Csehország, 1999 május. 
  45. On differentiability of solutions with respect to parameters in state-dependent delay equations, Equadiff 9, Conference on Differential Equations and their Applications, Brno, Csehország, 1997. augusztus. 
  46. Parameter identification in functional differential equations with state-dependent delays, Functional Differential-Difference Equations and Applications, Antalya, Törökország, 1997. augusztus.
  47. Fifth Colloquium on the Qualitative Theory of Differential Equations, Szeged, 1996. július.
  48. Conference on Dynamical Systems in Biology and Medicine, Veszprém, 1996. július.
  49. International Conference on Dynamical Systems & Differential Equations, Springfield, Missouri, USA, 1996. május.
  50. 15th  Regional Conference on Differential Equations, Raleigh, North Carolina, USA, 1995. október.
  51. On classes of differential equations with state-dependent delays,14th Southeastern Atlantic Regional Conference on Differential Equations, Knoxville, Tennessee, USA, 1994. október.
  52. Differentiability with respect to parameters in functional differential equations with state-dependent delays, 23rd Midwest Differential Equations Conference, Norman, Oklahoma, USA, 1994. október.
  53. On the effects of delay perturbations on the stability of delay difference equations, First International Conference on Difference Equations, San Antonio, Texas, USA, 1994. május.
  54. Stability in delay equations with perturbed time lags, 32nd IEEE Conference on Decision and Control, San Antonio, Texas, USA, 1993. december.

Szeminárium, workshop előadások:

  1. Differentiability of Solutions with respect to Parameters in a Class of Neutral Differential Equations with State-Dependent Delays, ELTE Matematikai Intézet, 2019. november 11.
  2. On parameter estimation in functional differential equations, Veszprém Optimization Workshop, August 26–27, 2019, Veszprém, Hungary
  3. Differentiability of solutions with respect to the delay function in functional differential equations, Szeged School on Computational Tools for Delay Differential Equations, 9-11 September, 2016
  4. Estimation of parameters in neutral differential equations with state-dependent delays using equations with piecewise constant arguments, Workshop on Delay Differential and Difference Equations, Veszprém, Hungary, July 17-18, 2014
  5. On second order differentiability with respect to parameters of solutions to differential equations with state-dependent delays, University of Valladolid, Valladolid, Spain, 2011. április 19.
  6. Állapotfüggő késleltetésű funkcionál-differenciálegyenletek megoldásainak differenciál-hatósága paraméterek szerint, ELTE, Alkalmazott Analízis és Számításmatematikai Tanszék Szemináriuma, 2010. november 15.
  7. On differentiability of solutions with respect to parameters in functional differential equations with state-dependent delays, Virginia Polytechnic Institute & State University, Blacksburg, VA, USA, 2010. április 29.
  8. On differentiability of solutions with respect to parameters in functional differential equations with state-dependent delays, University of Memphis, TN, USA, 2010. április 27.
  9. On smooth dependence on parameters in functional differential equations with state-dependent delays, University of Texas-Pan American, Edinburg, TX, USA, 2010. április 10.
  10. Asymptotically exponential solutions in nonlinear integral, differential and difference equations, University of Texas at Dallas, Richardson, TX, USA, 2010. március 2.
  11. Állapotfüggő késleltetésű differenciálegyenletek, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Veszprém, 2009. szeptember 30.
  12. Állapotfüggő késleltetésű differenciálegyenletek, Differenciálegyenletek, Tudományos ülés, MTA Székháza, 2009. május 27.
  13. Parameter estimation in functional differential equations with state-dependent delays, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Győr, 2009. május 22.
  14. Neutrális állapotfüggő késleltetésű differenciálegyenletek, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Győr, 2007. október 5.
  15. Matematika oktatás a Pannon Egyetemen, Matematika oktatás mérnök és műszaki informatikai képzésekben, Ráckeve, 2007. március 2-4.
  16. Linearized stability for neutral differential equations with state-dependent delays, Department of Mathematical Analysis, University of Santiago, Stantiago de Compostela, Spain, 2006. november 2.
  17. On stability in functional differential equations with state-dependent delays, Department of Applied Mathematics II, University of Vigo, Vigo, Spain, 2006. október 31. 
  18. On stability of delay systems using perturbation methods, Departmento de Matemática Aplicada, Uiversidad Nacional de Educación a Distancia (UNED), Madrid, Spain, 2006. október 30.
  19. Linearizált stabilitás állapotfüggő késleltetésű egyenletekre, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Veszprém, 2006. október 11.
  20. Applications of delay equations, 4-hour lecture at the Sarajevo Summer School on Mathematical Techniques in Modeling Physiological Systems, Sarajevo, Bosnia-Hercegovina, September 10-22, 2006.
  21. Állapotfüggő késleltetésű neutrális differenciálegyenletek megoldásainak paraméter szerinti differenciálhatósága, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Veszprém, 2005. május 31.
  22. Állapotfüggő késleltetésű neutrális egyenletekről, JATE Bolyai Intézet Differenciálegyenletek Szemináriuma, 2005. február 10.
  23. On stability of linear delay seytems using perturbation methods, University of Texas at Dallas, Richardson, TX, USA, 2004. június 29.
  24. Fundamental solutions and asymptotic stability of linear delay equations, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Veszprém, 2004. május 17.
  25. Semi-discretization of functional differential equations modeling milling processes, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Veszprém, 2004. május 17.
  26. Matematika programcsomagok oktatása, Informatika és kommunikáció az oktatásban, Szombathely, 2001. március 29-31.
  27. Állapotfüggő késleltetésű funkcionál-differenciálegyenletek megoldásainak paraméter szerinti differenciálhatóságáról, BME Differenciálegyenletek Tanszékének Szemináriuma, 2000. december 7.
  28. Késleltetésben perturbált funkcionál-differenciálegyenletek stabilitásáról, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Veszprém, 1999. október 25.
  29. Paraméter becslés funkcionál-differenciálegyenletekre, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Győr, 1998. június 17. 
  30. Állapotfüggő késleltetésű neutrális differenciálegyenletek egy osztályáról, MTA VEAB, Matematikai analízis és alkalmazásai munkabizottság ülése, Veszprém, 1997. június 19. 
  31. Állapotfüggő késleltetésű retardált differenciálegyenletek megoldásainak paraméter szerinti differenciálhatóságáról, JATE Bolyai Intézet Differenciálegyenletek Szemináriuma, 1997. március 13.
  32. On classes of functional differential equations with state-dependent delays, Center for Applied Mathematics, Virginia Polytechnic Institute & State University, Blacksburg, Virginia, 1995. március.

Oktatási tevékenység:

Ösztöndíjak, kitüntetések:

Elnyert tudományos pályázatok:

Nyelvismeret: 

orosz középfokú állami nyelvvizsga, angol nyelvterületen szerzett diploma

Szakmai közéleti tevékenység:

PhD hallgató témavezetése:

Vezetői megbízások:

Személyes adatok:

születési dátum, hely: 1962. június 5., Budapest
nős (Mária), gyerekek: István és Éva