C O M M U N I C A T I O N S
FACULTY OF SCIENCES
UNIVERSITY OF ANKARA
DE LA FACULTE DES SCIENCES
DE L’UNIVERSITE D’ANKARA
Series A1:
Mathematics and Statistics
VOLUME: 67
Number: 2
YEAR: 2018
Abstracted/Indexed in
Web of Science (ESCI), Mathematical Reviews (MathSciNet),
Zentralblatt MATH (ZbMATH),
TUBITAK-Ulakbim
Faculty of Sciences, Ankara University
06100 Beşevler, Ankara-Turkey
C O M M U N I C A T I O N S
FACULTY OF SCIENCES
UNIVERSITY OF ANKARA
DE LA FACULTE DES SCIENCES
DE L’UNIVERSITE D’ANKARA
Series A1:
Mathematics and Statistics
Volume 67
Number : 2
Year :2018
Owner (Sahibi)
Selim Osman SELAM, Dean of Faculty of Sciences
Editor in Chief (Yazı İşleri Müdürü)
Nuri ÖZALP
Managing Editor
Erdal GÜNER
Area Editors
Sait HALICIOĞLU (Group Theory) Elif DEMİRCİ (Applied Mathematics) Gülen TUNCA (Analysis-Operator Theory) Murat OLGUN (Functional Analysis) Yusuf YAYLI (Geometry) Mehmet UNVER (Analysis) Yılmaz AKDİ (Statistics) İshak ALTUN (Topology)
Burcu Ungor (Rings and Modules Theory) Oktay DUMAN (Summability and Approx. Theory) Murat ŞAHİN (Number Theory)
Editors
M. AKHMET METU TURKEY O. ARSLAN Ankara University, TURKEY A. AYTUNA Sabancı University, TURKEY Elgiz BAIRAMOV Ankara University, TURKEY H. BEREKETOĞLU Ankara University, TURKEY H. BOZDOĞAN Uni. of Tennessee, USA C.Y. CHAN University of Louisiana, USA A. B. EKİN Ankara University, TURKEY D. GEORGIOU Uni.of Patras, GREECE V. GREGORI Univ. Politècnica de València, SPAIN V.S. GULIYEV Nat. Acad. of Sci, AZERBAIJAN I GYORI Veszprem University, HUNGARY A. HARMANCI Hacettep e University, TURKEY F.HATHOUT Université de Saïda, ALGERIA K. ILARSLAN Kırıkkkale Uni., TURKEY A. KABASINSKAS Kaunas U.of Tech., LITHUANIA V. KALANTAROV Koç University, TURKEY F. KARAKOC Ankara University, TURKEY S. KOKSAL Florida Inst. of Tech., USA A. M. KRALL The Penn. State University, USA H.P. KUNZI Uni. of CT, SOUTH AFRICA H.T. LIU Tatung University, TAIWAN Vishnu Narayan MISHRA S. V.NIT., INDIA C. ORHAN Ankara University, TURKEY S. ROMAGUERA Uni. Pol. de València, SPAIN H. M. SRIVASTAVA, Univ. of Victoria, CANADA I.P. STAVROULAKIS Uni. of Ioannina, GREECE C. TEZER METU, TURKEY A.D. TÜRKOĞLU Gazi University, TURKEY S. YARDIMCI Ankara University, 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).
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C O M M U N I C A T I O N S
©Ankara University Press, Ankara 2018
FACULTY OF SCIENCES
UNIVERSITY OF ANKARA
DE LA FACULTE DES SCIENCES
DE L’UNIVERSITE D’ANKARA
Series A1:
Mathematics and Statistics
Volume 67
Number : 2
Year :2018
TOKA, O., ÇETIN, M., A correction on tangentboost algorithm ……….………. 1
ÖZDIN, T., On locally unit regularity conditions for arbitrary Leavitt path algebras ……… 11
ES, H., First and second acceleration poles in Lorentzian homothetic motions ………. 19
HANI A. KHASHAN, H.A., HANDAM, A.H., (Weakly) N-Nil cleanness of the ring ℤ𝑚 ……… 29
YAVUZ, E., TALO, Ö., ÇOŞKUN, H., Cesàro Summability of integrals of fuzzy-number-valued functions ……… 38
KEMALOGLU, S.A., INAN, G.E., APAYDIN, A., Portfolio optimization under parameter uncertainty using the risk aversion formula ……….. 50
KOÇAK, O., SULAK, F., DOGANAKSOY, A., UĞUZ, M., Modifications of Knuth randomness tests for integer and binary sequence ………... 64
TAŞCI, D., Gaussian Padovan and Gaussian Pell-Padovan sequences ……… 82
OZALP GULLER, Ö., IBIKLI, E., A theorem on weighted approximation by singular integral operators ……….. 89
DEVECI, Ö., AKÜZÜM, Y., CAMPBELL, C.M., The recurrence sequences via polyhedral groups ……….…… 99
SIDDESHA M.S., BAGEWADI, C.S., Semi-slant submanifolds of (𝑘 − 𝜇) contact manifold ……… 116
YILDIRIM, Y., YAŞAR, E., Wronskian solutions of (2+1) dimensional non-local Ito equation ………. 126
SAĞSÖZ, F., On univalence of integral operators ……… 139
GUNDUZ, B., A convergence theorem in generalized convex cone metric spaces ………. 147
IPEK, P., ISMAILOV, Z.I., Selfadjoint singular differential operators for first order ………. 156
ERDEN EGE, M., ALACA, C., C*-Algebra-valued S-metric spaces ………... 165
LOKESHA, V., SHRUTI, R., RANJINI, P.S., CEVIK, A.S., On certain topological indices of nanostructures using Q(G) and R(G) operators ……… 178
EROGLU, A., DADASHOVA, I.B., Potential operators on Carleson curves in Morrey spaces ……….. 188
ACAR, T., KAJLA, A., Blending type approximation by Bézier-summation-integral type operators ………. 195
ŞENEL, G., The relation between soft topological space and soft ditopological space ………. 209
TAN, E., A Q-analog of the bi-periodic Lucas sequence ………... 220
BUDAKÇI, G., ORUÇ, H., A generalization of the Peano kernel and its applications ……… 229
KARAMAN, Ç., On metallic semi-symmetric metric F-connections ……….. 242
IŞCAN, İ., KONUK, N.K., KADAKAL, M., Some new Simpson type inequalities for the p-convex and p-concave functions 252 DIRIK, S., ATÇEKEN, M., YILDIRIM, Ü., On the geometry of pseudo-slant submanifolds of a nearly Sasakıan manifold … 264 CALISKAN, N., On conharmonic curvature tensor of Sasakian Finsler structures on tangent bundle ………. 282
KAVGACI, M.E., Oscillation of nonlinear fourth-order difference equations with middle term ………. 291
MISHRA, V.N., PATE, P., The Voronovskaja type asymptotic formula for derivative of integral generalization of q-Bernstein operators ……… 298
OZTURK, V., TURKOGLU, D., ANSARI, A.H., Fixed points for generalized (ℱ, ℎ, 𝛼, 𝜇) − 𝜓 − contractions in b-metric spaces ………. 306
TAŞCAN, F., ÜNSAL, Ö., AKBULUT, A., SAN, S., Nonlinear self adjointness and exact solution of Fokas–Olver–Rosenau– Qiao (FORQ) equation ………... 317
C O M M U N I C A T I O N S
©Ankara University Press, Ankara 2018