LIBERTAS MATHEMATICA (new series)
https://system.lm-ns.org/index.php/lm-ns
This 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>American Romanian Academy of Arts and Sciencesen-USLIBERTAS MATHEMATICA (new series)0278-5307Cover Pages
https://system.lm-ns.org/index.php/lm-ns/article/view/1487
.Vasile Staicu2023-09-272023-09-2743Andrea Bacciotti
https://system.lm-ns.org/index.php/lm-ns/article/view/1489
In memoriam: Andreia Bacciotti and his contributionsGiuseppe AnichiniLuciano Pandolfi2024-04-072024-04-0743Chaotic Dynamics in a Class of Switched Li\'{e}nard/Rayleigh Systems with Relativistic Acceleration
https://system.lm-ns.org/index.php/lm-ns/article/view/1483
We consider a class of time-periodic switched systems, which are obtained as a perturbation of a planar autonomous reversible system by a periodic forcing term. The model is motivated by an extension of the classical Li\'{e}nard and Rayleigh equations due to the presence of a relativistic acceleration. Using recent results from the theory of topological horseshoes, we provide a new result of existence of infinitely many subharmonic solutions, as well as more complex dynamics, as illustrated by some numerical examples.Duccio PapiniGabriele VillariFabio Zanolin2023-09-262023-09-2643Boundary Regional Controllability of Semilinear Systems Involving Caputo Time Fractional Derivatives
https://system.lm-ns.org/index.php/lm-ns/article/view/1488
We study boundary regional controllability problems for a class of semilinear fractional systems. Sufficient conditions for regional boundary controllability are proved by assuming that the associated linear system is approximately regionally boundary controllable. The main result is obtained by using fractional powers of an operator and the fixed point technique under the approximate controllability of the corresponding linear system in a suitable subregion of the space domain. An algorithm is also proposed and some numerical simulations performed to illustrate the effectiveness of the obtained theoretical results.Asmae TajaniFatima-Zahrae El AlaouiDelfim F. M. Torres2024-01-032024-01-0343New Inequalities for Operator Noncommutative Perspectives Related to Convex Functions
https://system.lm-ns.org/index.php/lm-ns/article/view/1485
In this paper we obtain some new inequalities for operator noncommutative perspectives related to convex functions. Applications for weighted operator geometric mean and relative operator entropy are also given.Silvestru Sever Dragomir2024-04-072024-04-0743Remembering Andrea Bacciotti
https://system.lm-ns.org/index.php/lm-ns/article/view/1490
Remembering the colleague, friend and mathematicianGiuseppe Anichini2024-04-072024-04-0743Remembering Andrea
https://system.lm-ns.org/index.php/lm-ns/article/view/1491
Andrea remembered by a former studentFrancesca Ceragioli2024-04-072024-04-0743