ORIGINAL_ARTICLE
INEQUALITIES FOR MEROMORPHICALLY P-VALENT FUNCTIONS
The aim of this paper is to prove some inequalities for p-valent meromorphic functions in thepunctured unit disk Δ* and find important corollaries.
https://ijsts.shirazu.ac.ir/article_2209_9f1c9605d6234b994a3831b7f52d53ce.pdf
2009-06-11
139
143
10.22099/ijsts.2009.2209
p-valent functions
meromorphic starlike function
convex
close-to-convex
A.
EBADIAN
a.ebadian@urmia.ac.ir
1
Department of Mathematics, Faculty of Science, Urmia University, Urmia, I. R. of Iran
LEAD_AUTHOR
SH.
NAJAFZADEH
2
Department of Mathematics, University of Maragheh, Maragheh, I. R. of Iran
AUTHOR
ORIGINAL_ARTICLE
N-ARY POLYGROUPS
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.
https://ijsts.shirazu.ac.ir/article_2210_33be221c3bf789b5deb0c97fadd69fe8.pdf
2009-06-11
145
158
10.22099/ijsts.2009.2210
n-ary polygroup
n-ary normal subploygroup
isomorphism theorem
fundamental relation
M.
GHADIRI
mghadiri@yazduni.ac.ir
1
Department of Mathematics, Yazd University, Yazd, I. R. of Iran
LEAD_AUTHOR
B. N.
WAPHARE
2
Department of Mathematics, University of Pune, Pune, India
AUTHOR
ORIGINAL_ARTICLE
1-TYPE AND BIHARMONIC FRENET CURVES IN LORENTZIAN 3-SPACE
1-type and biharmonic curves by using Laplace operator in Lorentzian 3-space arestudied and some theorems and characterizations are given for these curves.
https://ijsts.shirazu.ac.ir/article_2211_9752964b343a95c33b6aa4fbc6118beb.pdf
2009-06-11
159
168
10.22099/ijsts.2009.2211
– 1-type curve
biharmonic curve
Helix
degenerate helices
H.
KOCAYIGIT
huseyin.kocayigit@bayar.edu.tr
1
Celal Bayar University, Faculty of Science and Arts Department of Mathematics Muradiye Campus, Muradiye, Manisa, Turkey
LEAD_AUTHOR
H. H.
HACISALIHOGLU
2
Ankara University, Faculty of Science, Department of Mathematics, Tandogan, Ankara, Turkey
AUTHOR
ORIGINAL_ARTICLE
ALMOST CONVERGENCE THROUGH THE GENERALIZED DE LA VALLÉE-POUSSIN MEAN
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.
https://ijsts.shirazu.ac.ir/article_2212_d1e55ec4c0da81e23f83a7453123ef25.pdf
2009-06-11
169
177
10.22099/ijsts.2009.2212
sequence spaces
invariant mean
matrix transformation
bounded linear operators
M.
MURSALEEN
mursaleenm@gmail.com
1
Department of Mathematics, Aligarh Muslim University, Aligarh 202002, India
LEAD_AUTHOR
A. M.
JARRAH
2
Department of Mathematics, Yarmouk University, Irbid, Jordan
AUTHOR
S. A.
MOHIUDDINE
3
Department of Mathematics, Aligarh Muslim University, Aligarh 202002, India
AUTHOR
ORIGINAL_ARTICLE
ON A SPECIAL CLASS OF FINSLER METRICS
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.
https://ijsts.shirazu.ac.ir/article_2213_2031af62a001b9946fc1cedeeb4112da.pdf
2009-06-11
179
186
10.22099/ijsts.2009.2213
Randers metric
Landsberg metric
Berwald metric
Randers change
C-conformal change
A.
TAYEBI
1
Department of Mathematics and Computer Science, Qom University, Qom, I. R. of Iran
AUTHOR
E.
PEYGHAN
epeyghan@gmail.com
2
Department of Mathematics, Faculty of Science, Arak University, Arak, I. R. of Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
A CLASS OF LIFT METRICS ON FINSLER MANIFOLDS
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.
https://ijsts.shirazu.ac.ir/article_2214_0dccc75738900c9463fd320add2681f7.pdf
2009-06-11
187
194
10.22099/ijsts.2009.2214
finsler manifold
G-natural metrics
Kähler structure
E.
PEYGHAN
e-peyghan@araku.ac.ir,
1
Department of Mathematics and Computer Science, Arak University, Arak, I. R. of Iran
AUTHOR
A.
TAYEBI
akbar.tayebi@gmail.com
2
Department of Mathematics, Faculty of Science, Qom University, Qom, I. R. of Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
THE INVOLUTE-EVOLUTE OFFSETS OF RULED SURFACES
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
https://ijsts.shirazu.ac.ir/article_2215_cee2e898ba7eb173d0f2d4497189f574.pdf
2009-06-11
195
201
10.22099/ijsts.2009.2215
Ruled Surface
involute-evolute
differential geometry
E.
KASAP
1
Ondokuz Mayis University, Science and Arts Faculty, Department of Mathematics, Kurupelit 55139, Samsun, Turkey
AUTHOR
S.
YUCE
sayuce@yildiz.edu.tr
2
Yıldız Technical University, Faculty of Arts and Science, Department of Mathematics, Esenler, 34210, Istanbul, Turkey
LEAD_AUTHOR
N.
KURUOGLU
3
University of Bahcesehir, Faculty of Arts and Science, Department of Mathematics and Computer Sciences, Besiktas, 34100, Istanbul, Turkey
AUTHOR
ORIGINAL_ARTICLE
DESIGN AND CONSTRUCTION OF A HIGH PRECISION TAC
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.
https://ijsts.shirazu.ac.ir/article_2216_656b93a985618eee10003218bed10455.pdf
2009-06-11
203
211
10.22099/ijsts.2009.2216
Time to Amplitude Converter (TAC)
START-STOP method
Integral Non Linearity (INL)
time
resolution
neutron-gamma discrimination
F.
ESFANDI
1
Radiation Application Group, Faculty of Nuclear Engineering, Shahid Beheshti University, Tehran, I. R. of Iran, Post Box No. 19839631130211
AUTHOR
M.
SHAHRIARI
2
Radiation Application Group, Faculty of Nuclear Engineering, Shahid Beheshti University, Tehran, I. R. of Iran, Post Box No. 19839631130211
AUTHOR
F.
ABBASI DAVANI
fabbasi@sbu.ac.ir
3
Radiation Application Group, Faculty of Nuclear Engineering, Shahid Beheshti University, Tehran, I. R. of Iran, Post Box No. 19839631130211
LEAD_AUTHOR
A.
SHARGHI IDO
4
Shahid Beheshti University, Incubator Center of Technology Units, Tehran, I. R. of Iran
AUTHOR