Prof. Dr. A Okay Celebi's Home Page

International / National Conference Participations

INTERNATIONAL CONFERENCE PARTICIPATION

Title of the Talk

1. A.O. Çelebi; Decomposition formulas for a class of PDE;  4. Congress of U.B.M, İstanbul 1971, pp.51-52, Turkey
2. A.O. Çelebi; Similarity principle for pseudoholomorphic functions;Workshop on Functional Analytic Methods in Complex Analysis and Appl. to PDE, feb.8-19, 1988, Trieste, Italy
3. A.O. Çelebi;  K. Leblebicioğlu, On the convergence of numerical solutions of a nonlinear optimal control problem, Inter. Sym. on Numerical Analysis, Ankara, Sept.1-4, 1988, Turkey
4. A.O. Çelebi, Ö. Akın; Generalized Cauchy-Riemann equations and the positive k-harmonic functions: Proc. Potential theory, Plenum Press, pp 7-11, 1988
5. A.O. Çelebi; Some studies in differential equations in Turkey (survey), 1. Türk Azeri Matematik Sempozyumu, İstanbul, 12-18 Eylül 1991.
6. A.O. Çelebi, M. Çağlıyan; On a generalization of areolar monogenic functions, 2. Türk-Azeri Matematik Sempozyumu, Bakü, Eylül 1992.
7. A.O. Çelebi, M. Çağlıyan; A generalization of areolar monogenic functions. Fourth Int. Coll. on Diff.Eqns, Plovdiv, Bulgaria, Aug.18-23 , 1993.
8. A.O. Çelebi, K. Leblebicioğlu; An optimal Control  problem for a class of nonlinear parabolic partial differential equations, Fourth Int. Coll. on Diff. Eqns, Plovdiv, Bulgaria, Aug.18-23 , 1993.
9. A.O. Çelebi, B. Kaymakçalan; Implusive dynamic systems on time scales: Fifth Int. Coll. on Diff. Eqns, Plovdiv, Bulgaria, Aug.18-23 , 1994.
10. A.O. Çelebi, U. Yüksel: Solution of intial value problems for pseudo-holomorphic functions in conical domains, Graz-Austria, Jan.6-11 , 1997.
11. V. Kalantarov, A.O.Celebi: Lower semicontinuity of the attractors for singularly perturbed Boussinesq – tpye equations, DEMPh, 1997.
12. A.O. Çelebi, S. Şengül: On Riemann functions for complex differential equations, Workshop on recent trends in complex meth. for PDE. July 6-10, 1998, Ankara, Turkey
13. A.O. Çelebi, S. Şengül: Differential-operator solutions for complex partial differential equations; Workshop on recent trends in complex meth. for PDE. July 6-10, 1998, Ankara, Turkey,
14. A.O.Çelebi,  V.K. Kalantarov,  Spatial  behavior  estimates for the  wave equation  under  nonlinear  boundary  conditions, Nonlinear Systems: Modeling  ,Simulation and applications,  Nanded,  India,  Dec. 26-29 , 2000.
15. A. O. Celebi, Initial value problems for  pseudoholomorphic  functions, Workshop on functional-analytic and complex methods, their  interaction, and applications  to partial differential equations, Graz- Austria, Feb. 12 -16,  2001.
16. A.O.Celebi : An introduction  to partial differential equations with complex variables I , II; Research semester on the qualitative theory of non-linear partial differential equations, Feb.22 and Feb.24 2001, Feza Gursey Institute, TUBITAK  - Bogazici University, Kandilli – Istanbul.
17. A.O. Celebi, A Boundary Value Problem for Generalized Analytic Functions in Wiener- type Domains: I
The Existence of the Solutions of Cauchy-Riemann System, ISAAC Conference on Complex Analysis,                        
Differential Equations and Related Topics, Sept. 17 – 21 2002, Yerevan, Armenia.
18. A.O. Celebi, A Boundary Value Problem for Generalized Analytic Functions in Wiener- type Domains: II
Representation of Solutions of BVP by  T_D  Operators, NATO ARW, Sep.22 – 25 2002, Yerevan, Armenia.
19. A.O. Celebi, D. Ugurlu, Determining functionals for solutions of strongly damped nonlinear wave equations,  International Conference on Research and Education, Malaysia , April 2 – 4,  2003.
20. A.O. Celebi, Boundary value problems for complex partial differential equations in Wiener-type domains, Workshop on Recent Trends in Applied Complex Analysis, June 1 – 5 ,2004, Ankara, Turkey.
21. A.O. Çelebi,  K. Koca, A boundary value problem for nonlinear complex Differential Equation in Wiener –type Domains,   Recent Trends of Applied Mathematics based on PDE  and Complex Analysis, Hanoi,
Aug.25 – 29 , 2004, Vietnam
22.A.O.Celebi, Boundary Value Problems for Second Order Equations in Domains with Non-smooth Boundaries, Catania, July 25 – 30, 2005, Italy.
23. A.O. Celebi, M. Kaya, Inverse problems for a heat equation with memory, Inverse Problems: Modeling and Simulation, Fethiye, May 29 – June 2, 2006, Turkey , pp. 36 – 37.
24.A.O. Celebi, M. Kaya, Inverse problems for a heat equation with memory; Inverse problems, homogenization and related topics in Analysis, UCF (Orlando), USA, January 13 – 15, 2007.
25.  A. O. Celebi, U. Aksoy; Norm estimates of a class of Calderon – Zygmund type strongly singular integral operators; Ilia Vekua – 100, ISAAC Conference, Tbilisi, April 23 – 27, 2007. 
26.  A. O. Celebi, U. Aksoy; On a boundary value problem for higher order elliptic complex partial differential equations,  Ilia Vekua – 100, ISAAC Conference, Tbilisi, April 23 – 27, 2007.
27. A. O. Celebi, U. Aksoy; Neumann problem for a particular fourth-order equation, 6th International ISAAC Congress, 13 – 18 August 2007, Ankara.
28. A. O. Celebi, U. Dinlemez Ates; Structural stability for nonlinear shallow water waves,  6th International ISAAC Congress, 13 – 18 August 2007, Ankara.
29. A. O. Celebi, Meryem Kaya; Existence of weak solutions of the g-Kelvin-Voigt equations, 6th International ISAAC Congress, 13 – 18 August 2007, Ankara.
30.  A. O. Celebi, U. Aksoy; Neumann problem for higher order linear complex differential equations, IWPDE, Aug. 4 – 8,2008, York Univ. Toronto, Canada
31. A. O. Celebi, Existence of weak solutions of the g-Kelvin-Voigth equation, The second International Conference “Problems of Cybernetics and Informaticas”, Baku, Azerbayjan, September 10 – 12, 2008, pp.30-32
32. A. O. Celebi, U. Aksoy; Some classes of integral operators related to mixed boundary value problems, Pre-ICM Intern. Convention on Math. Sci., Dec. 18 – 20, 2008, Delhi, India
33. A. O. Celebi, U. Aksoy; Mixed boundary value problems for higher order complex partial differential equations, Pre-ICM Intern. Convention on Math. Sci., Dec. 18 – 20, 2008, Delhi, India
34. A. O. Celebi, U. Aksoy; Boundary value problems for higher – order linear complex partial differential equations, CMFT 2009, June 8 – 12, 2009, Bilkent Univ., Ankara , Turkey.
35. A. O. Celebi, U. Aksoy; Some Boundary value problems for higher – order linear complex partial differential equations , III Congress of the Turkish World Mathematicians, June 30 – July 4, 2009, Almaty, Kazakhstan.   
36. A. O. Celebi, U. Aksoy; A hierarchy of polyharmonic kernel functions and related integral equations, July 13-18, 2009, London, England.  
37. A. O. Celebi, U. Aksoy; Complex partial differential equations with mixed-type boundary conditions, July 13-18, 2009, London, England.
38. A. O. Celebi, U. Aksoy; Robin problem for generalized n – Poisson equations, Boundary Value Problems, Functional Equations and Applications, April 14 – 17, 2010, Krakow, Poland.
39. A. O. Celebi, U. Aksoy; Dirichlet problem for the generalized Poisson equation in an annular domain, 18th ICFIDCAA, Aug. 13 – 17, 2010, Macau.
40. A. O. Celebi; Some Boundary value problems for complex partial differential equations, May 16 – 20 2011, Padova University, Italy.
41. A. O. Celebi, U. Aksoy; Dirichlet problem for a generalized inhomogeneous Polyanalytic equation in an annular domain, 9th ISAAC, Aug. 22 – 27, 2011,  Moscow
42. A. O. Celebi; Boundary value problems for higher-order linear complex partial differential equations, 20th ICFIDCAA, July 29 – Aug 02, 2012, Hanoi, Vietnam.

Participations:

1. Fullerton,Irvine and Santa Cruz AMS meetings, between Sept. 1968-Aug.1969, USA
2. Control  theory symposium, Loughborough (Great Britain), Dec. 1975.
3. Pseudo-differential operators with applications, 16-24 June 1977, Bressanone (Italy) Summer School
4. Int. Cong. Math., 15-23 Aug. 1978, Helsinki (Finland)
5. Spectral Analysis of differential operators; 27 Aug.-4 Sept. 1983, Varenna (Italy), Summer School
6. International Symposium on Numerical Analysis, Sept. 1-4, 1987, METU
7. Second workshop on functional analytic methods in complex analysis and applications to PDE, Feb. 1993, Trieste (Italy).
8. 3. Azerbaycan-Türkiye Matematik Sempozyumu, 31 Aug.-4 Sept. 1993, Trabzon
9. Workshop on  Nonlinear Problems in Mathematical Physics, 24-29 Oct. 1994, Edirne
10. Workshop on Nonlinear Problems in Math. Phys.II, 14-18 Sept. 1995, Ankara, METU
11. Workshop on Nonlinear Problems in Math. Phys. III, 3-7 June 1996, Ankara, METU
12. International Workshop on Differential and Difference Inequalities, 3-7 July 1996, Gebze 
13. Anatolian Lectures in Dynamical Systems, June 16-20, 1997, METU-Ankara 
14.  Functional Differential Difference equations and Applications; 18-22 Aug. 1997. Antalya
15. Continuum Models and Discrete Systems 9,  June 29 – July 3 1998, İstanbul
16. Workshop on Differential Equations and its Applications; Sept. 15 – 17, 2004, Istanbul
17. The First International Workshop on Dynamical Equations on Time Scales; June 27 – July 1, 2005, Istanbul
18. International Workshop on Research in Secondary and Tertiary Mathematics Education; Baskent University, Ankara, July 7 – 11, 2006
19. International Integral Geometry and Inverse Problems Symposium, July 17 – 21, 2006, Zonguldak
20. Inverse problems: Modeling and Simulation, Fethiye, May 26 – 30, 2008.
21. Nonlinear dispersive equations, imbm – Istanbul, Aug. 25 – 28, 2008.
22. International Conference on Difference Equations and Applications, July 21 – 25, 2008, Istanbul, Turkey
23. İstanbul Conference on Mathematical Methods and Modeling in Life Sciences and Biomedicine, Aug. 17 – 21, 2009, Yeditepe University
24.9th workshop on Quantization, Dualities and Integrable Systems, April 23 – 25, 2010.
25. İstanbul Conference on Mathematical Methods and Modeling in Life Sciences and Biomedicine II, Aug. 15 – 19, 2011, Yeditepe University

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NATIONAL CONFERENCE PARTICIPATIONS

Title of theTalk:

1. A.O. Çelebi; Eliptik bir denklem için Vekua’nin metodu ve bir ultrahiperbolik denklem icin Cauchy  problemi, TUBITAK 4.Bilim Kongresi, Ankara 1973.
2.A.O. Çelebi; Lineer olmayan sınır değer problemlerinde çözümlerin varlığı, Differensiyel Denklemler sempozyumu bildirileri, İstanbul, Aralık 1985 pp. 55-70. (invited talk)
3.A.O.Çelebi, K. Leblebicioğlu; On the optimal control of distributed parameter systems, Ulusal Matematik Sempozyumu ,KTU  Trabzon,1987.
4.A.O. Çelebi; Genelleştirilmiş analitik fonksiyonlar, Ulusal Matematik Sempozyumu 25-28 Eylül 1989 İzmir (invited talk)
5. A.O.Çelebi, İ.E. Anar;A scattering problem in R,V.Ulusal Matematik Sempozyumu, Adapazarı,Eylul, 1992.
6. A.O. Çelebi, S.Şengul; 4. basmaktan bir kompleks diferensiyel denklemin çözümleri hakkında, VI. Ulusal Matematik Sempozyumu, Dogu Akdeniz Universitesi,Gazi Magusa, Eylul, 1993.
7. A.O.Çelebi,F. Güvenilir;Yüksek basamaktan eliptik denklemlerde çözümlerin varlığı, Adana, Eylülç1995.
8. A.O.Çelebi,  S.Şengül;İki farklı diferensiyel operatörün Riemann fonksiyonları  arasındaki ilişkiler,  Adana, Eylül  1995.
9. A.O.Çelebi,V.Kalantarov; Doğrusal olmayan  sistemlerin çözümlerinin kararlılığı, Bulanık Mantık ve Nöral Ağlar Sempozyumu,ODTU,Ekim 1995.
10. A.O.Çelebi,  V. Kalantarov, F. Tahamtani; Yarılineer eliptik ve parabolik denklemler için Phragmen- Lindelöf  tipi teoremler, Dinamik sistemler sempozyumu,ODTU (Uludağ) , aralık 1995.
11. A. O. Çelebi,  Nonlinear parabolik denklemlerde çözümlerin varlığı ve tekliği, Uygulamalı Matematik Günleri: Hacettepe Üniversitesi, 17-21 Şubat 1997 (invited talk)
12.A.O. Çelebi, Genelleştirilmiş analitik fonksiyon uzaylarında diferansiyel denklemler; 11-15 Eylül 1997, Adapazarı, Sakarya Üniversitesi. (invited talk)
13. A. O. Çelebi, Tekil pertürbasyon teorisine giriş: Matematiksel Fiziğin Doğrusal olmayan problemleri; Hacettepe Üniversitesi 17-19 Eylül 1997. ( invited talk)
14. A. O. Çelebi, Yapılandırılmış nüfus dinamiği, Diferansiyel Denklemler Sempozyumu IX, 22-24 Eylül 1997, KTÜ, Trabzon (invited talk)
15. A. O. Çelebi ; Genelleştirilmiş analitik fonksiyonlar sınıfında başlangıç değer problemlerinin çözümü,Palandöken Matematik günleri, Erzurum,Haziran 2001
16. A. O. Çelebi, Sinir kosulu lineer olmayan dalga denkleminin cozumlerinin uzun zaman davranisi,
Dinamik Sistemler Sempozyumu IV, Izmir, 8 – 10 Subat  2002.
17. A.O. Çelebi,  K. Koca ;  Wiener tipli bolgede homogen olmayan Vekua denklemi icin bir sinir deger problemi , XVI. Ulusal Matematik Sempozyumu, Van, 10 - 12  Eylul, 2003;Yüzüncü Yıl Üniv. Fen Bilimleri Enstitüsü Dergisi, Özel Sayı, Van, 2005, pp. 301 – 311.
18. O.Celebi, K.B.Arikan, Y.S.Unlusoy, I. Korkmaz; Identification of linear bicycle model of an automobile using experimental data, OTEKON’06, 3. Otomotiv Teknolojileri Kongresi , 26 – 28 Haziran 2006, Bursa
19. A.O. Celebi, U. Aksoy; Bir sinif kuvvetli tekil integral operatorler icin norm kestirimleri, XIX.Ulusal matematik sempozyumu, Kutahya, 22 – 25 Agustos 2006,pp.114.   
20. A. O. Celebi, U. Aksoy; Schwarz problem for higher – order elliptic complex partial differential equations. Workshop on Differential Equations and its Applications, METU, Feb. 8 -10, 2007.
21. A. O. Celebi; A boundary value problem for Bitsadze equation in Wiener – type domains, Workshop on Differential Equations and its Applications, METU, Feb. 8 -10, 2007.
22. A. O. Çelebi, Umit Aksoy; Bir kompleks integral operatörler sınıfının kompaktlığı, XX. Ulusal Matematik Sempozyumu, Erzurum, 3 – 6 Eylül 2007.
23. A. O. Celebi, U. Aksoy; Neumann problem for generalized Poisson and bi-Poisson equation, Workshop on Differential Equations and its Applications, Pamukkale Univ., April 18 -20, 2008.
24. A. O. Celebi, U. Aksoy; Neumann problem for generalized n-Poisson equation, Workshop on Differential Equations and its Applications, Pamukkale Univ., April 18 -20, 2008.
25. A. O. Celebi, U. Aksoy; Yuksek basamaktan kompleks diferensiyel denklemler icin Schwarz – Neumann sinir deger problemi, Yeditepe Universitesi Diferensiyel Denklemler Calistayi, Istanbul, 19 – 21 Haziran 2008.
26. A. O. Celebi, U. Yuksel; Differential operators associated to differential equations with anti – monogenic right-hand sides in Clifford Analysis, Yeditepe Universitesi Diferensiyel Denklemler Calistayi, Istanbul, 19 – 21 Haziran 2008.
27. A. O. Celebi, U. Aksoy; Dirichlet problems for generalized n-Poisson equation, Workshop on Differential Equations and its Applications, Sakarya Univ., April 17 -18, 2009.
28. A. O. Celebi, U. Aksoy; Mixed boundary value problems for higher-order complex partial differential equations, Workshop on Differential Equations and its Applications, Sakarya Univ., April 17 -18, 2009.
29. A. O. Celebi, U. Aksoy; Boundary value problems for linear complex partial differential equations, Dinamik Sistemler Calistayi, 18 – 19 Haziran 2009, Izmir.
30. A. O. Celebi, U. Aksoy; Robin problem for generalized n – Poisson equations, Workshop on Differential Equations and its Applications, Yeditepe Univ., April 30 – May 2, 2010.
31. A. O. Celebi, U. Aksoy; Iterated mixed boundary value problems for generalized n-Poisson equation, Workshop on Differential Equations and its Applications, Yeditepe Univ., April 30 – May 2, 2010.
32. A. O. Celebi; Varga’yı ne kadar tanıyorsunuz?, Varga Kalantarov. 60.yasgunu toplantısı, Koc Univ. 5 Kasım 2010
33. A. O. Celebi, U. Aksoy; Dirichlet problem for generalized inhomogeneous polyharmonic equation in an annular domain,  Workshop on Differential Equations and its Applications, Izmir Ekonomi Univ., Sep. 14 – 16, 2011.

CONTACT DETAILS:
Phone: +90(216) 578 1695
email: acelebi at yeditepe.edu.tr

Address: Yeditepe University, Department of Mathematics, Kayisdagi, 34755 Kadikoy-Istanbul, TURKEY