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Prof. Dr. Okay Çelebi
Selected Publications: Okay Çelebi; On the nonoscillatory behavior of solutions of third order differential equations. (to appear in the J. Applicable Analysis) Jointly with A. Tiryaki Okay Çelebi; Phragmen-Lindelöf type theorems for some semilinear elliptic and parabolic equations. (to appear in the Demonstratio Mathematica) Jointly with V.Kalantarov, F. Tahamtani Okay Çelebi; Schrödinger Operators with an energy-dependent potential: dicrete spectrum and principal functions. (to appear in the J. Math. Anal and Appl.) Jointly with Ö. Çakar , E. Bairamov Okay Çelebi; Solution of Initial Value Problems for Pseudoholomorphic functions in Conical Domains. (to appear in the Complex Variables) Jointly with U. Yüksel Okay Çelebi; A Cauchy-Kowalewski theorem in the space of pseudoholomorphic functions, Complex Variables. Vol. 29 , pp.305-311,1996. Jointly with U. Yüksel Okay Çelebi; A scattering problem in IRn ; Bull. Inst. Math. Acad. Sinica, Vol.22, pp. 323-340, 1994. Jointly with E. Anar Okay Çelebi; An optimal control problem with non-linear elliptic state equation; J.Math.Anal. and Appl. Vol. 164, pp. 178-205, 1992. Jointly with K. Leblebicioğlu Okay Çelebi; Some oscillation theorems for perturbed nonlinear, Pure and App. Math.Sci., Vol.33, pp 47-53,1991. Jointly with H. Bereketoğlu Okay Çelebi; On a class of hyperbolic differential equations, Bull. Inst.Math.Acad.Sinica, Vol.18, pp. 261-271, 1990. Jointly with N. Ersoy Okay Çelebi; A singular I.V.P. for an ultrahyperbolic equation, Radovi
Math., Vol.4, pp. 375-382, 1988.5. Jointly with M. Çagliyan
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