{"id":364,"date":"2015-12-31T01:51:00","date_gmt":"2015-12-31T01:51:00","guid":{"rendered":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/?page_id=364"},"modified":"2015-12-31T01:51:00","modified_gmt":"2015-12-31T01:51:00","slug":"iris-de-oliveira-zeli","status":"publish","type":"page","link":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/iris-de-oliveira-zeli\/","title":{"rendered":"Iris de Oliveira Zeli"},"content":{"rendered":"<p><a href=\"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/pesquisa\/colaboradores\/\">Colaboradores<\/a><\/p>\n<div class=\"teachpress_pub_list\"><form name=\"tppublistform\" method=\"get\"><a name=\"tppubs\" id=\"tppubs\"><\/a><\/form><div class=\"teachpress_publication_list\"><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_number\">3.<\/div><div class=\"tp_pub_info\"><p class=\"tp_pub_author\">Douglas D. Novaes; Tere Seara; Marco A. Teixeira; Iris O. Zeli <\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" href=\"https:\/\/dx.doi.org\/10.1137\/19M1289959\" title=\"Study of periodic orbits in periodic perturbations of planar reversible Filippov systems having a two-fold cycle\" target=\"blank\">Study of periodic orbits in periodic perturbations of planar reversible Filippov systems having a two-fold cycle<\/a> <span class=\"tp_pub_type article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">Em: <\/span><span class=\"tp_pub_additional_journal\">SIAM J. Appl. Dyn. Syst., <\/span><span class=\"tp_pub_additional_volume\">vol. 19, <\/span><span class=\"tp_pub_additional_number\">n\u00e3o 2, <\/span><span class=\"tp_pub_additional_pages\">pp. 1343-1371, <\/span><span class=\"tp_pub_additional_year\">2020<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_23\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('23','tp_abstract')\" title=\"Mostrar resumo\" style=\"cursor:pointer;\">Resumo<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_23\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('23','tp_links')\" title=\"Mostrar links e recursos\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_23\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('23','tp_bibtex')\" title=\"Mostrar BibTeX\" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_23\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{NovSeaTeiZel2020,<br \/>\r\ntitle = {Study of periodic orbits in periodic perturbations of planar reversible Filippov systems having a two-fold cycle},<br \/>\r\nauthor = {Douglas D. Novaes and Tere Seara and Marco A. Teixeira and Iris O. Zeli },<br \/>\r\nurl = {http:\/\/arxiv.org\/abs\/1910.01954},<br \/>\r\ndoi = {10.1137\/19M1289959},<br \/>\r\nyear  = {2020},<br \/>\r\ndate = {2020-06-01},<br \/>\r\nurldate = {2020-06-01},<br \/>\r\njournal = {SIAM J. Appl. Dyn. Syst.},<br \/>\r\nvolume = {19},<br \/>\r\nnumber = {2},<br \/>\r\npages = {1343-1371},<br \/>\r\nabstract = {We study the existence of periodic solutions in a class of nonsmooth differential systems obtained from nonautonomous periodic perturbations of reversible piecewise smooth differential systems. It is assumed that the unperturbed system presents a simple two-fold cycle, which is characterized by a closed trajectory connecting a visible  two-fold singularity to itself. It is shown that under certain generic conditions the perturbed problem has sliding and crossing periodic solutions. In order to get our results, Melnikov's ideas were applied together with  tools from the geometric singular perturbation theory. Finally, a study of a perturbed piecewise Hamiltonian model is performed.},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('23','tp_bibtex')\">Fechar<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_23\" style=\"display:none;\"><div class=\"tp_abstract_entry\">We study the existence of periodic solutions in a class of nonsmooth differential systems obtained from nonautonomous periodic perturbations of reversible piecewise smooth differential systems. It is assumed that the unperturbed system presents a simple two-fold cycle, which is characterized by a closed trajectory connecting a visible  two-fold singularity to itself. It is shown that under certain generic conditions the perturbed problem has sliding and crossing periodic solutions. In order to get our results, Melnikov's ideas were applied together with  tools from the geometric singular perturbation theory. Finally, a study of a perturbed piecewise Hamiltonian model is performed.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('23','tp_abstract')\">Fechar<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_23\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-arxiv\"><\/i><a class=\"tp_pub_list\" href=\"http:\/\/arxiv.org\/abs\/1910.01954\" title=\"http:\/\/arxiv.org\/abs\/1910.01954\" target=\"_blank\">http:\/\/arxiv.org\/abs\/1910.01954<\/a><\/li><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1137\/19M1289959\" title=\"Follow DOI:10.1137\/19M1289959\" target=\"_blank\">doi:10.1137\/19M1289959<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('23','tp_links')\">Fechar<\/a><\/p><\/div><\/div><\/div><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_number\">2.<\/div><div class=\"tp_pub_info\"><p class=\"tp_pub_author\">Jaume Llibre; Douglas D. Novaes; Iris O. Zeli<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" href=\"https:\/\/dx.doi.org\/10.4171\/rmi\/1131\" title=\"Limit cycles of piecewise polynomial perturbations of higher dimensional linear differential systems\" target=\"blank\">Limit cycles of piecewise polynomial perturbations of higher dimensional linear differential systems<\/a> <span class=\"tp_pub_type article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">Em: <\/span><span class=\"tp_pub_additional_journal\">Revista de Matem\u00e1tca Iberoamericana, <\/span><span class=\"tp_pub_additional_volume\">vol. 36, <\/span><span class=\"tp_pub_additional_pages\">pp. 291-318, <\/span><span class=\"tp_pub_additional_year\">2020<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_25\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('25','tp_abstract')\" title=\"Mostrar resumo\" style=\"cursor:pointer;\">Resumo<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_25\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('25','tp_links')\" title=\"Mostrar links e recursos\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_25\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('25','tp_bibtex')\" title=\"Mostrar BibTeX\" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_25\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{LliNovZel2019,<br \/>\r\ntitle = {Limit cycles of piecewise polynomial perturbations of higher dimensional linear differential systems},<br \/>\r\nauthor = {Jaume Llibre and Douglas D. Novaes and Iris O. Zeli},<br \/>\r\nurl = {hyyp:\/\/dx.doi.org\/10.4171\/rmi\/1131<br \/>\r\nhttps:\/\/arxiv.org\/abs\/1801.01730},<br \/>\r\ndoi = {10.4171\/rmi\/1131},<br \/>\r\nyear  = {2020},<br \/>\r\ndate = {2020-01-01},<br \/>\r\nurldate = {2020-01-01},<br \/>\r\njournal = {Revista de Matem\u00e1tca Iberoamericana},<br \/>\r\nvolume = {36},<br \/>\r\npages = {291-318},<br \/>\r\nabstract = {The averaging theory has been extensively employed for studying periodic solutions of smooth and nonsmooth differential systems. Here, we extend the averaging theory for studying periodic solutions a class of regularly perturbed non--autonomous $n$-dimensional discontinuous piecewise smooth differential system. As a fundamental hypothesis, it is assumed that the unperturbed system has a manifold $CZsubsetR^n$ of periodic solutions satisfying $dim(mathcal{Z})<n.$ Then, we apply this result to study limit cycles bifurcating from periodic solutions of<br \/>\r\nlinear differential systems, $x'=Mx$, when they are perturbed inside<br \/>\r\na class of discontinuous piecewise polynomial differential systems<br \/>\r\nwith two zones. More precisely, we study the periodic solutions of<br \/>\r\nthe following differential system<br \/>\r\n[<br \/>\r\nx'=Mx+ e F_1^n(x)+e^2F_2^n(x),<br \/>\r\n]<br \/>\r\nin $R^{d+2}$ where $e$ is a small parameter, $M$ is a<br \/>\r\n$(d+2)times(d+2)$ matrix having one pair of pure imaginary<br \/>\r\nconjugate eigenvalues, $m$ zeros eigenvalues, and $d-m$ non--zero real eigenvalues.},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('25','tp_bibtex')\">Fechar<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_25\" style=\"display:none;\"><div class=\"tp_abstract_entry\">The averaging theory has been extensively employed for studying periodic solutions of smooth and nonsmooth differential systems. Here, we extend the averaging theory for studying periodic solutions a class of regularly perturbed non--autonomous $n$-dimensional discontinuous piecewise smooth differential system. As a fundamental hypothesis, it is assumed that the unperturbed system has a manifold $CZsubsetR^n$ of periodic solutions satisfying $dim(mathcal{Z})&lt;n.$ Then, we apply this result to study limit cycles bifurcating from periodic solutions of<br \/>\r\nlinear differential systems, $x'=Mx$, when they are perturbed inside<br \/>\r\na class of discontinuous piecewise polynomial differential systems<br \/>\r\nwith two zones. More precisely, we study the periodic solutions of<br \/>\r\nthe following differential system<br \/>\r\n[<br \/>\r\nx'=Mx+ e F_1^n(x)+e^2F_2^n(x),<br \/>\r\n]<br \/>\r\nin $R^{d+2}$ where $e$ is a small parameter, $M$ is a<br \/>\r\n$(d+2)times(d+2)$ matrix having one pair of pure imaginary<br \/>\r\nconjugate eigenvalues, $m$ zeros eigenvalues, and $d-m$ non--zero real eigenvalues.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('25','tp_abstract')\">Fechar<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_25\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"fas fa-globe\"><\/i><a class=\"tp_pub_list\" href=\"hyyp:\/\/dx.doi.org\/10.4171\/rmi\/1131\" title=\"hyyp:\/\/dx.doi.org\/10.4171\/rmi\/1131\" target=\"_blank\">hyyp:\/\/dx.doi.org\/10.4171\/rmi\/1131<\/a><\/li><li><i class=\"ai ai-arxiv\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/arxiv.org\/abs\/1801.01730\" title=\"https:\/\/arxiv.org\/abs\/1801.01730\" target=\"_blank\">https:\/\/arxiv.org\/abs\/1801.01730<\/a><\/li><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.4171\/rmi\/1131\" title=\"Follow DOI:10.4171\/rmi\/1131\" target=\"_blank\">doi:10.4171\/rmi\/1131<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('25','tp_links')\">Fechar<\/a><\/p><\/div><\/div><\/div><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_number\">1.<\/div><div class=\"tp_pub_info\"><p class=\"tp_pub_author\">Douglas D. Novaes; Marco A. Teixeira; Iris O. Zeli<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" href=\"https:\/\/dx.doi.org\/https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7\" title=\"The generic unfolding of a codimension-two connection to a two-fold singularity of planar Filippov systems\" target=\"blank\">The generic unfolding of a codimension-two connection to a two-fold singularity of planar Filippov systems<\/a> <span class=\"tp_pub_type article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">Em: <\/span><span class=\"tp_pub_additional_journal\">Nonlinearity, <\/span><span class=\"tp_pub_additional_volume\">vol. 31, <\/span><span class=\"tp_pub_additional_pages\">pp. 2083\u20132104, <\/span><span class=\"tp_pub_additional_year\">2018<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_24\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('24','tp_abstract')\" title=\"Mostrar resumo\" style=\"cursor:pointer;\">Resumo<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_24\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('24','tp_links')\" title=\"Mostrar links e recursos\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_24\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('24','tp_bibtex')\" title=\"Mostrar BibTeX\" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_24\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{NovTeiZel2018,<br \/>\r\ntitle = {The generic unfolding of a codimension-two connection to a two-fold singularity of planar Filippov systems},<br \/>\r\nauthor = {Douglas D. Novaes and Marco A. Teixeira and Iris O. Zeli},<br \/>\r\nurl = {https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7<br \/>\r\nhttps:\/\/arxiv.org\/abs\/1809.03433},<br \/>\r\ndoi = {https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7},<br \/>\r\nyear  = {2018},<br \/>\r\ndate = {2018-04-06},<br \/>\r\nurldate = {2018-04-06},<br \/>\r\njournal = {Nonlinearity},<br \/>\r\nvolume = {31},<br \/>\r\npages = {2083\u20132104},<br \/>\r\nabstract = {Generic bifurcation theory was classically well developed for smooth differential systems, establishing results for k-parameter families of planar vector fields. In the present study we focus on a qualitative analysis of 2-parameter families of planar Filippov systems assuming that it presents a codimension-two minimal set for the critical value of the parameter. Such object, named elementary simple two-fold cycle, is characterized by a regular trajectory connecting a visible two-fold singularity to itself, for which the second derivative of the first return map is nonvanishing. We analyzed the codimension-two scenario through the exhibition of its bifurcation diagram.},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('24','tp_bibtex')\">Fechar<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_24\" style=\"display:none;\"><div class=\"tp_abstract_entry\">Generic bifurcation theory was classically well developed for smooth differential systems, establishing results for k-parameter families of planar vector fields. In the present study we focus on a qualitative analysis of 2-parameter families of planar Filippov systems assuming that it presents a codimension-two minimal set for the critical value of the parameter. Such object, named elementary simple two-fold cycle, is characterized by a regular trajectory connecting a visible two-fold singularity to itself, for which the second derivative of the first return map is nonvanishing. We analyzed the codimension-two scenario through the exhibition of its bifurcation diagram.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('24','tp_abstract')\">Fechar<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_24\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"fas fa-globe\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7\" title=\"https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7\" target=\"_blank\">https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7<\/a><\/li><li><i class=\"ai ai-arxiv\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/arxiv.org\/abs\/1809.03433\" title=\"https:\/\/arxiv.org\/abs\/1809.03433\" target=\"_blank\">https:\/\/arxiv.org\/abs\/1809.03433<\/a><\/li><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7\" title=\"Follow DOI:https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7\" target=\"_blank\">doi:https:\/\/doi.org\/10.1088\/1361-6544\/aaaaf7<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('24','tp_links')\">Fechar<\/a><\/p><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Colaboradores<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/wp-json\/wp\/v2\/pages\/364"}],"collection":[{"href":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/wp-json\/wp\/v2\/comments?post=364"}],"version-history":[{"count":1,"href":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/wp-json\/wp\/v2\/pages\/364\/revisions"}],"predecessor-version":[{"id":365,"href":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/wp-json\/wp\/v2\/pages\/364\/revisions\/365"}],"wp:attachment":[{"href":"http:\/\/www.ime.unicamp.br\/~ddnovaes\/index.php\/wp-json\/wp\/v2\/media?parent=364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}