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VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260913T084302Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20121026T150000Z
DTEND:20121026T170000Z
UID:event959@bu.edu
URL:http://physics.bu.edu/internal/events/show/959
SUMMARY:Survival of the Weakest? Lessons from studies of four or more compe
	ting species
DESCRIPTION:Featuring Royce Zia\, Virginia Tech\nHosted by: Sidney Redner\n
	\nPart of the Biophysics/Condensed Matter Seminar Series.\n\nAbstract: Popu
	lation dynamics is a venerable subject\, dating back two centuries to Malth
	us\, Verhulst\, Lotka\, Volterra\, and many others. Nonetheless\, new and i
	nteresting phenomena are continually being discovered. For example\, the re
	cent discovery of "Survival of the Weakest" in cyclic competition of 3 spec
	ies attracted much attention: <http://www.sciencedaily.com/releases/2009/02
	/090213115127.htm>. Considering a similar system with four or more species\
	, we find a more intuitively understandable principle which appears to unde
	rpin all systems with cyclically competing species. We will present several
	 interesting aspects of the 4-species system -- from non-linear dynamical p
	henomena in a deterministic mean-field approach to remarkable extinction pr
	obabilities in the stochastic evolution of a finite system. Some insights i
	nto the deterministic dynamics\, gained from generalizing this system to on
	e with any number of species with arbitrary pairwise interactions\, will al
	so be discussed.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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