Extension of the Equal Ripple Theorem to the first Zolotarev problem on two complex intervals
Extension of the Equal Ripple Theorem to the first Zolotarev problem on two complex intervals
Let and be the two intervals in , and let and be solutions of the Zolotarev problems on and , respectively. The arrays , , and determine the intervals, while is the degree of and the degree of is .
Extended Equal Ripple conjecture. There are infinitely many arrays for which there exists such that
If the stated condition
is valid, then $t=t_et_p$ solves the global Zolotarev problem.
This proposes an extension of the Equal Ripple Theorem from real rational approximation on one interval to the first Zolotarev problem on two complex intervals. The source does not provide evidence that the conjecture has been resolved.
Progress summary
Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.
Sources & referencesView supporting material
Primary source
Vladimir Druskin, Murthy Guddati and Thomas Hagstrom, “On generalized discrete PML optimized for propagative and evanescent waves”, arXiv:1210.7862 (2012).
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