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SUMMARY:Oleh Vynnyshyn (Institute of Mathematics\, Natl. Acad. Sci. Ukrain
 e)
DTSTART:20261001T123000Z
DTEND:20261001T140000Z
DTSTAMP:20261006T100457Z
UID:fran/87
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/fran/87/">A 
 series with a Cantorval achievement set and convergent ratios of consecuti
 ve terms (the second Jones problem solved)</a>\nby Oleh Vynnyshyn (Institu
 te of Mathematics\, Natl. Acad. Sci. Ukraine) as part of Семінар з
  фрактального аналізу / Fractal analysis seminar\n\n\nA
 bstract\nIn the paper by Rafe Jones\, “Achievement sets of sequences” 
 (2011)\, an open question about the existence of a series whose achievemen
 t set is a Cantorval and whose consecutive-term ratios tend to a limit was
  formulated. This question was later stated as the Second Jones Problem in
  Szymon Głąb and Franciszek Prus-Wiśniowski “Achievement sets – cur
 rent results and open problems” (2025). In this talk\, a family of such 
 series is constructed.\n
LOCATION:https://researchseminars.org/talk/fran/87/
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