C O M M U N I C A T I O N S
Series A1:
Mathematics and Statistics
VOLUME: 64 Number: 1 YEAR: 2015
Abstracted in
Mathematical Reviews (MathSciNet), Zentralblatt MATH (ZbMATH) , TUBITAK-Ulakbim
Faculty of Sciences, Ankara University 06100 Beşevler, Ankara-Turkey
ISSN 1303-5991
DE LA FACULTE DES SCIENCES
DE L’UNIVERSITE D’ANKARA
FACULTY OF SCIENCES
ANKARA UNIVERSITY
C O M M U N I C A T I O N S
DE LA FACULTE DES SCIENCES FACULTY OF SCIENCES DE L’UNIVERSITE D’ANKARA ANKARA UNIVERSITY
Series A1: Mathematics and Statistics Owner Hüseyin BEREKETOĞLU Editor in Chief Nuri ÖZALP Managing Editor Erdal GÜNER Area Editors
Sait HALICIOĞLU (Algebra) Elif DEMİRCİ (Applied Mathematics) Gülen TUNCA (Analysis-Theory of Functions) Murat OLGUN (Functional Analysis) Yusuf YAYLI (Geometry) İshak ALTUN (Topology)
Yılmaz AKDİ (Statistics)
Editors
M.AKHMET METU, TURKEY O. ARSLAN Ankara Uni. TURKEY A. AYTUNA Sabancı Uni. TURKEY E. BAIRAMOV Ankara Uni. TURKEY H. BEREKETOĞLU Ankara Uni. TURKEY H. BOZDOĞAN Uni. of Tennessee, USA C.Y.CHAN, Univ. of Louisiana, USA A. B. EKİN Ankara Uni. TURKEY D. GEORGIOU Uni. of Patras GREECE V. GREGORI Uni. Politècnica de València, SPAIN I. GYORI Veszprem Uni. HUNGARY A. HARMANCI Hacettepe Uni. TURKEY F.HATHOUT Uni. de Saïda, ALGERIA K. ILARSLAN Kırıkkkale Uni. TURKEY A. KABASINSKAS Kaunas U. of Tech., LITHUANIA V. KALANTAROV Koç Uni. TURKEY F. KARAKOC Ankara Uni. TURKEY A. M. KRALL The Penn. State Uni. USA H.P. KUNZI Uni. of Cape Town, SOUTH AFRICA H.T. LIU, Tatung Univ. TAIWAN C. ORHAN Ankara Uni. TURKEY S. ROMAGUERA Un.Pol.de València, SPAIN C. TEZER METU TURKEY A.D. TÜRKOĞLU Gazi Uni. TURKEY S. YARDIMCI Ankara Uni. TURKEY
This Journal is published two issues in a year by the Faculty of Sciences, University of Ankara. Articles and any other material published in this journal represent the opinions of the author(s) and should not be construed to reflect the opinions of the Editor(s) and the Publisher(s).
Correspondence Address:
COMMUNICATIONS DERGİ BAŞEDİTÖRLÜĞÜ Ankara Üniversitesi Fen Fakültesi, 06100 Tandoğan, ANKARA – TURKEY
Tel: (90) 312-212 67 20 Fax: (90) 312-223 23 95
e-mail: nozalp@science.ankara.edu.tr
Print:
Ankara Üniversitesi Press İncitaş Sokak No:10 06510 Beşevler ANKARA – TURKEY
Tel: (90) 312-213 65 65 Publication Year : 2015
C O M M U N I C A T I O N S
Volume 64 Number : 1 Year :2015 Series A1: Mathematics and Statistics
S. AÇIK KEMALOGLU, E. KIZILOK KARA, Modeling dependent financial assets
by dynamiccopula and portfolio optimization based on CVaR ... 1
M. JAFARI, Y. YAYLI, Generalized quaternions and their algebraic properties …… 15
T.G. SUGATI, M. S. ALWAN, X. LIU, H∞ control and input-to-state stabilization for hybrid systems with time ..………. ………. 29 S.K. DATTA, T. BISWAS, C. GHOSH, Effect of generalized relative order on the growth of composite entire functions .……… 39 N.EGHBALI, Stability and super stability of fuzzy approximately *-homomorphisms.. 61 H. KARSLI, H. E. ALTIN, Convergence of certain nonlinear counterpart of the Bernstein operators ..……… 75 I.Y. KARACA, F. TOKMAK FEN, Eigenvalues for iterative systems of dynamic equations with integral boundary conditions ...………..……. 87
C O M M U N I C A T I O N S
DE LA FACULTE DES SCIENCES FACULTY OF SCIENCES DE L’UNIVERSITE D’ANKARA ANKARA UNIVERSITY
