01748nas a2200241 i 4500 acta76528 20221108083347.0 220908s2022 hu o 0|| eng d 1417-3875 10.14232/ejqtde.2022.1.27 doi SZTE Egyetemi Kiadványok Repozitórium hun eng Pessoa Claudio Limit cycles of planar piecewise linear Hamiltonian differential systems with two or three zones [elektronikus dokumentum] / Pessoa Claudio 2022 19 Electronic journal of qualitative theory of differential equations In this paper, we study the existence of limit cycles in continuous and discontinuous planar piecewise linear Hamiltonian differential system with two or three zones separated by straight lines and such that the linear systems that define the piecewise one have isolated singular points, i.e. centers or saddles. In this case, we show that if the planar piecewise linear Hamiltonian differential system is either continuous or discontinuous with two zones, then it has no limit cycles. Now, if the planar piecewise linear Hamiltonian differential system is discontinuous with three zones, then it has at most one limit cycle, and there are examples with one limit cycle. More precisely, without taking into account the position of the singular points in the zones, we present examples with the unique limit cycle for all possible combinations of saddles and centers. Természettudományok Matematika Hamilton rendszerek, Differenciálegyenlet - lineáris Ribeiro Ronisio aut http://acta.bibl.u-szeged.hu/76528/1/ejqtde_2022_027.pdf Dokumentum-elérés