http://system.lm-ns.org/index.php/lm-ns/issue/feedLIBERTAS MATHEMATICA (new series)2020-04-18T15:49:25+01:00LM-NS Secretariatsecretariat@lm-ns.orgOpen Journal SystemsThis is the submission and reviewing management system. For the journal information please see <a href="http://www.lm-ns.org">http://www.lm-ns.org</a>http://system.lm-ns.org/index.php/lm-ns/article/view/1446Cover_v39n22020-04-18T15:49:25+01:00Vasile Staicuvasile@ua.pt.2019-12-05T00:00:00+00:00http://system.lm-ns.org/index.php/lm-ns/article/view/1448Table of Contents of v39n22020-04-18T15:49:25+01:00Vasile Staicuvasile@ua.pt.2019-11-09T00:00:00+00:00http://system.lm-ns.org/index.php/lm-ns/article/view/1429Periodic solutions in gross-substitute discrete dynamical systems2020-04-18T15:49:25+01:00Kaori Saitosaito_k@iwate-pu.ac.jpWe consider the existence of asymptotically periodic solutions of a gross-substitute discrete system, which appear as tatonnement processes of mathematical economic models, by using uniformly stable and the properties of a gross-substitute discrete system.2019-10-08T07:32:15+01:00http://system.lm-ns.org/index.php/lm-ns/article/view/1443Relationship between the left-right Jeribi essential spectra and the left-right Weyl essential spectra of closed densely de ned linear operators2020-04-18T15:49:25+01:00Aymen Ammarammar_aymen84@yahoo.frBilel Boukettayaboukettayabilel@gmail.comAref Jeribiaref.jeribi@fss.rnu.tnIn the present paper, we introduce and study the notion of the left-right Jeribi essential spectra, and we characterize the left-right Weyl essential spectra of closed densely de ned linear operators. Furthermore, we apply the obtained results to study the transport equation.2019-04-09T00:00:00+01:00http://system.lm-ns.org/index.php/lm-ns/article/view/1440Determinant for bi-univalent of pseudo starlikeness for certain class of analytic univalent functions2020-04-18T15:49:25+01:00Ibrahim Tunji Awolereawolereibrahim01@gmail.comAbiodun Tinuoye Oladipoatoladipo@lautech.edu.ngThis paper introduces and investigates the polynomials whose coefficients are bi-univalent of generalized distribution. We employed method of convolution via generalized polylogarithm and Sigmoid function to obtain first few coefficients of the defined subclasses. Furthermore, second and third Hankel determinant for the class defined were established. Consequences of various choices of parameter were discussed which further establish geometric properties of the generalized distribution associated with bi-univalent functions.2019-11-09T00:00:00+00:00http://system.lm-ns.org/index.php/lm-ns/article/view/1432A CLASS OF MEROMORPHIC FUNCTIONS WITH POSITIVE COEFFICIENTS INVOLVING POLYLOGARITHM FUNCTIONS2020-04-18T15:49:25+01:00B. Venkateswarlubvlmaths@gmail.comP. Thirupathi Reddyreddypt2@gmail.comRajkumar N Inglebvlmaths@yahoo.comS Sreelakshmisreelakshmisarikonda@gmail.comIn this paper, we introduce and study a new subclass of meromorphic functions with positive coefficients involving the Polylogaritham function defined by a new operator~ $\mathfrak{D}_c f(z)$~ and obtain coefficient estimates, growth and distortion theorem, radius of convexity, integral transforms,convex linear combinations,convolution properties and~ $\delta-$neighborhoods for the class~ $\sigma_{c,p}(\alpha).$2020-11-07T00:00:00+00:00http://system.lm-ns.org/index.php/lm-ns/article/view/1428A CLASS OF 2-STABLE COMMUTATIVE SEMIRINGS2020-04-18T15:49:25+01:00Amir Massoud Rahimiamrahimi@ipm.irThe notion and some properties of (strongly) B-rings, in a natural way, are extended to (strongly) B- and (strongly) BJ -semirings which is somewhat similar to the notion of rings having stable range 2. Results are given showing the connection between several types of semirings whose nite sequences satisfy some stability condition, some involving the Jacobson k-radical of the semiring R. Besides some examples and other results, it is shown that R[x], the semiring of polynomials over a semiring R, is not a B-semiring (consequently, not a strongly B-semiring) when R is a zerosumfree semiring.2020-04-07T12:15:53+01:00http://system.lm-ns.org/index.php/lm-ns/article/view/1438ON Lambda PSEUDO BI-STARLIKE FUNCTIONS RELATED (p; q)-LUCAS POLYNOMIAL2020-04-18T15:49:25+01:00Gangadharan Murugusundaramoorthygmsmoorthy@yahoo.comSibel Yalçınsyalcin@uludag.edu.trIn this paper we introduce a new class L(; x) of Lambda-pseudo bi-starlike functions through the (p; q)-Lucas polynomials and determine the bounds for |a2| and |a3| where a2, a3 are the initial Taylor coecients of f 2 L(; x): Furthermore, we estimate the Fekete-Szego functional for f 2 L(; x): We pointed out several new or known consequences of our result.2019-12-17T00:00:00+00:00http://system.lm-ns.org/index.php/lm-ns/article/view/1449A memorial tribute to Professor Constantin Corduneanu, the outstanding matematician2020-04-18T15:49:25+01:00Mehran Mahdavimmahdavi@bowiestate.eduThis paper contains the biographical sketch and reviews scientic contributions of Professor Constantin Corduneanu, an outstanding researcher in stability and control theory, and oscillations.2020-04-11T01:41:11+01:00http://system.lm-ns.org/index.php/lm-ns/article/view/1450A tribute to the late Professor Constantin Corduneanu2020-04-18T15:49:25+01:00Vasile Staicuvasile@ua.pt.2020-04-16T19:45:07+01:00http://system.lm-ns.org/index.php/lm-ns/article/view/1452LastPages v39n22020-04-18T15:49:25+01:00Vasile Staicuvasile@ua.pt.2020-04-18T15:46:05+01:00