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SUMMARY:James A. Yorke (University of Maryland)
DTSTART:20220621T123000Z
DTEND:20220621T133000Z
DTSTAMP:20260423T021400Z
UID:OWNS/89
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/OWNS/89/">La
 rge and Small Chaos Models</a>\nby James A. Yorke (University of Maryland)
  as part of One World Numeration seminar\n\n\nAbstract\nTo set the scene\,
  I will discuss one large model\, a whole-Earth model for predicting the w
 eather\, and how to initialize such a model and what aspects of chaos are 
 essential. Then I will discuss a couple related “very simple” maps tha
 t tell us a great deal about very complex models. The results on simple mo
 dels are new. I will discuss the logistic map mx(1-x). Its dynamics can ma
 ke us rethink climate models. Also\, we have created a piecewise linear ma
 p on a 3D cube that is unstable in 2 dimensions in some places and unstabl
 e in 1 in others. It has a dense set of periodic points that are 1 D unsta
 ble and another dense set of periodic points that are all 2 D unstable. I 
 will also discuss a new project whose tentative title is “ Can the flap 
 of butterfly's wings shift a tornado out of Texas -- without chaos?\n
LOCATION:https://researchseminars.org/talk/OWNS/89/
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