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Bifurcation Chaos"],"published-print":{"date-parts":[[2021,6,30]]},"abstract":"<jats:p> In recently published work [Inaba &amp; Kousaka, 2020a; Inaba &amp; Tsubone, 2020b], we discovered significant mixed-mode oscillation (MMO) bifurcation structures in which MMOs are nested. Simple mixed-mode oscillation-incrementing bifurcations (MMOIBs) are known to generate [Formula: see text] oscillations for successive [Formula: see text] between regions of [Formula: see text]- and [Formula: see text]-oscillations, where [Formula: see text] and [Formula: see text] are adjacent simple MMOs, e.g. [Formula: see text] and [Formula: see text], where [Formula: see text] is an integer. MMOIBs are universal phenomena of evidently strong order and have been studied extensively in chemistry, physics, and engineering. Nested MMOIBs are phenomena that are more complex, but have an even stronger order, generating chaotic MMO windows that include sequences [Formula: see text] for successive [Formula: see text], where [Formula: see text] and [Formula: see text] are adjacent MMOIB-generated MMOs, i.e. [Formula: see text] and [Formula: see text] for integer [Formula: see text]. Herein, we investigate the bifurcation structures of nested MMOIB-generated MMOs exhibited by a classical forced Bonhoeffer\u2013van der Pol oscillator. We use numerical methods to prepare two- and one-parameter bifurcation diagrams of the system with [Formula: see text], and 3 for successive [Formula: see text] for the case [Formula: see text]. Our analysis suggests that nested MMOs could be widely observed and are clearly ordered phenomena. We then define the first return maps for nested MMOs, which elucidate the appearance of successively nested MMOIBs. <\/jats:p>","DOI":"10.1142\/s0218127421501212","type":"journal-article","created":{"date-parts":[[2021,6,28]],"date-time":"2021-06-28T08:18:33Z","timestamp":1624868313000},"page":"2150121","source":"Crossref","is-referenced-by-count":8,"title":["Bifurcation Structures of Nested Mixed-Mode Oscillations"],"prefix":"10.1142","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5537-4734","authenticated-orcid":false,"given":"Munehisa","family":"Sekikawa","sequence":"first","affiliation":[{"name":"Department of Fundamental Engineering, School of Engineering, Utsunomiya University, Utsunomiya 321-8585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naohiko","family":"Inaba","sequence":"additional","affiliation":[{"name":"Graduate School, Electrical and Information Engineering, Shonan Institute of Technology, Fujisawa 251-8511, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2021,6,26]]},"reference":[{"key":"S0218127421501212BIB001","doi-asserted-by":"publisher","DOI":"10.1063\/1.456106"},{"key":"S0218127421501212BIB002","volume-title":"Encyclopedia of Mathematical Sciences","volume":"5","author":"Arnol\u2019d V. 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