INEQUALITIES FOR MEROMORPHICALLY P-VALENT FUNCTIONS
A.
EBADIAN
Department of Mathematics, Faculty of Science, Urmia University, Urmia, I. R. of Iran
author
SH.
NAJAFZADEH
Department of Mathematics, University of Maragheh, Maragheh, I. R. of Iran
author
text
article
2009
eng
The aim of this paper is to prove some inequalities for p-valent meromorphic functions in thepunctured unit disk Δ* and find important corollaries.
Iranian Journal of Science and Technology (Sciences)
Springer
1028-6276
33
v.
2
no.
2009
139
143
http://ijsts.shirazu.ac.ir/article_2209_9f1c9605d6234b994a3831b7f52d53ce.pdf
dx.doi.org/10.22099/ijsts.2009.2209
N-ARY POLYGROUPS
M.
GHADIRI
Department of Mathematics, Yazd University, Yazd, I. R. of Iran
author
B. N.
WAPHARE
Department of Mathematics, University of Pune, Pune, India
author
text
article
2009
eng
Polygroups are multivalued systems that satisfy group like axioms. In this paper the class of n-arypolygroups is introduced. The concepts of n-ary normal subpolygroups and strong homomorphisms of n-arypolygroups are adopted. With respect to these concepts the isomorphism theorems for n-ary polygroups arestated and proved. Finally, we will consider the fundamental relation * defined on an n-ary polygroup andprove some results in this respect.
Iranian Journal of Science and Technology (Sciences)
Springer
1028-6276
33
v.
2
no.
2009
145
158
http://ijsts.shirazu.ac.ir/article_2210_33be221c3bf789b5deb0c97fadd69fe8.pdf
dx.doi.org/10.22099/ijsts.2009.2210
1-TYPE AND BIHARMONIC FRENET CURVES IN LORENTZIAN 3-SPACE
H.
KOCAYIGIT
Celal Bayar University, Faculty of Science and Arts Department of Mathematics
Muradiye Campus, Muradiye, Manisa, Turkey
author
H. H.
HACISALIHOGLU
Ankara University, Faculty of Science, Department of Mathematics, Tandogan, Ankara, Turkey
author
text
article
2009
eng
1-type and biharmonic curves by using Laplace operator in Lorentzian 3-space arestudied and some theorems and characterizations are given for these curves.
Iranian Journal of Science and Technology (Sciences)
Springer
1028-6276
33
v.
2
no.
2009
159
168
http://ijsts.shirazu.ac.ir/article_2211_9752964b343a95c33b6aa4fbc6118beb.pdf
dx.doi.org/10.22099/ijsts.2009.2211
ALMOST CONVERGENCE THROUGH THE GENERALIZED DE LA VALLÉE-POUSSIN MEAN
M.
MURSALEEN
Department of Mathematics, Aligarh Muslim University, Aligarh 202002, India
author
A. M.
JARRAH
Department of Mathematics, Yarmouk University, Irbid, Jordan
author
S. A.
MOHIUDDINE
Department of Mathematics, Aligarh Muslim University, Aligarh 202002, India
author
text
article
2009
eng
Lorentz characterized the almost convergence through the concept of uniform convergence of de laVallée-Poussin mean. In this paper, we generalize the notion of almost convergence by using the concept ofinvariant mean and the generalized de la Vallée-Poussin mean. We determine the bounded linear operators forthe generalized σ-conservative, σ-regular and σ-coercive matrices.
Iranian Journal of Science and Technology (Sciences)
Springer
1028-6276
33
v.
2
no.
2009
169
177
http://ijsts.shirazu.ac.ir/article_2212_d1e55ec4c0da81e23f83a7453123ef25.pdf
dx.doi.org/10.22099/ijsts.2009.2212
ON A SPECIAL CLASS OF FINSLER METRICS
A.
TAYEBI
Department of Mathematics and Computer Science, Qom University, Qom, I. R. of Iran
author
E.
PEYGHAN
Department of Mathematics, Faculty of Science, Arak University, Arak, I. R. of Iran
author
text
article
2009
eng
In this paper, we study projective Randers change and C-conformal change of P-reduciblemetrics. Then we show that every P-reducible generalized Landsberg metric of dimension n 2 must be aLandsberg metric. This implies that on Randers manifolds the notions of generalized Landsberg metric andBerwald metric are equivalent.
Iranian Journal of Science and Technology (Sciences)
Springer
1028-6276
33
v.
2
no.
2009
179
186
http://ijsts.shirazu.ac.ir/article_2213_2031af62a001b9946fc1cedeeb4112da.pdf
dx.doi.org/10.22099/ijsts.2009.2213
A CLASS OF LIFT METRICS ON FINSLER MANIFOLDS
E.
PEYGHAN
Department of Mathematics and Computer Science, Arak University, Arak, I. R. of Iran
author
A.
TAYEBI
Department of Mathematics, Faculty of Science, Qom University, Qom, I. R. of Iran
author
text
article
2009
eng
In this paper, we are going to study the g-natural metrics on the tangent bundle of Finslermanifolds. We concentrate on the complex and Kählerian and Hermitian structures associated with Finslermanifolds via g-natural metrics. We prove that the almost complex structure induced by this metric is acomplex structure on tangent bundle if and only if the Finsler metric is of scalar flag curvature. Then we showthat the complex structure is Hermitian if and only if the Finsler metric is of constant flag curvature.
Iranian Journal of Science and Technology (Sciences)
Springer
1028-6276
33
v.
2
no.
2009
187
194
http://ijsts.shirazu.ac.ir/article_2214_0dccc75738900c9463fd320add2681f7.pdf
dx.doi.org/10.22099/ijsts.2009.2214
THE INVOLUTE-EVOLUTE OFFSETS OF RULED SURFACES
E.
KASAP
Ondokuz Mayis University, Science and Arts Faculty, Department of Mathematics,
Kurupelit 55139, Samsun, Turkey
author
S.
YUCE
Yıldız Technical University, Faculty of Arts and Science, Department of Mathematics,
Esenler, 34210, Istanbul, Turkey
author
N.
KURUOGLU
University of Bahcesehir, Faculty of Arts and Science, Department of Mathematics and Computer
Sciences, Besiktas, 34100, Istanbul, Turkey
author
text
article
2009
eng
In this study, a generalization of the theory of involute-evolute curves is presented for ruledsurfaces based on line geometry. Using lines instead of points, two ruled surfaces which are offset in the senseof involute-evolute are defined. Moreover, the found results are clarified using computer-aided examples
Iranian Journal of Science and Technology (Sciences)
Springer
1028-6276
33
v.
2
no.
2009
195
201
http://ijsts.shirazu.ac.ir/article_2215_cee2e898ba7eb173d0f2d4497189f574.pdf
dx.doi.org/10.22099/ijsts.2009.2215
DESIGN AND CONSTRUCTION OF A HIGH PRECISION TAC
F.
ESFANDI
Radiation Application Group, Faculty of Nuclear Engineering, Shahid Beheshti University,
Tehran, I. R. of Iran, Post Box No. 19839631130211
author
M.
SHAHRIARI
Radiation Application Group, Faculty of Nuclear Engineering, Shahid Beheshti University,
Tehran, I. R. of Iran, Post Box No. 19839631130211
author
F.
ABBASI DAVANI
Radiation Application Group, Faculty of Nuclear Engineering, Shahid Beheshti University,
Tehran, I. R. of Iran, Post Box No. 19839631130211
author
A.
SHARGHI IDO
Shahid Beheshti University, Incubator Center of Technology Units, Tehran, I. R. of Iran
author
text
article
2009
eng
TAC (Time to Amplitude Convertor) is one of the most important time measurement instrumentswhich has great significance in many fields of science, especially radiation physics. A TAC unit has beendesigned based on the START-STOP analog method and NIM (Nuclear Instrument Modules) standards. Afterdesigning the circuit, it was simulated by PSPICE software and constructed by discrete and integratedcomponents. Accuracy of performance, linearity and time resolution of the TAC were checked in laboratorycondition and a neutron-gamma discrimination experiment was carried out using this TAC. Results of theseexperiments and the spectrum of neutron-gamma discrimination completely agree with those from othersimilar TACs, and are, to some extent, better.
Iranian Journal of Science and Technology (Sciences)
Springer
1028-6276
33
v.
2
no.
2009
203
211
http://ijsts.shirazu.ac.ir/article_2216_656b93a985618eee10003218bed10455.pdf
dx.doi.org/10.22099/ijsts.2009.2216