Persistence of aligned or connected singular-cycle families

Let ε\varepsilon and δ\delta be positive perturbation parameters, and suppose that the assumptions concerning the parameters and reduced flow hold. Assume that the singularities of the system are aligned or connected, and let muSHmu_{SH}^- and muSH+mu_{SH}^+ denote the relevant parameter thresholds. Persistence conjecture. There exist positive sufficiently small ε0\varepsilon_0 and δ0\delta_0 such that, for (ε,δ)(0,ε0)×(0,δ0)(\varepsilon,\delta)\in(0,\varepsilon_0)\times(0,\delta_0) and mumu in an appropriate subinterval of (muSH,muSH+)(mu_{SH}^-,mu_{SH}^+), the system exhibits either MMOs with double epochs of SAOs and a Farey segment of type 1s1k1^s1_k, with s,k>0s,k>0; MMOs with one epoch of SAOs and one non-SAO epoch of slow dynamics and a Farey segment of type 1s101^s1_0 or 1s101_s1^0, with s>0s>0; or three-timescale relaxation oscillations and a Farey segment of type 10101^01_0. These predicted MMO and relaxation-oscillation families are expected to persist under sufficiently small perturbations.

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Primary source

Panagiotis Kaklamanos, Nikola Popović and Kristian Uldall Kristiansen, “Bifurcations of mixed-mode oscillations in three-timescale systems: an extended prototypical example”, arXiv:2009.04316 (2021).

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