BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//talks.cam.ac.uk//v3//EN
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:19700329T010000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:19701025T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CATEGORIES:Topology Seminar
SUMMARY:Solving tangle equations and the tangle model for
DNA recombination - Mauro Mauricio (Imperial)
DTSTART;TZID=Europe/London:20120515T150000
DTEND;TZID=Europe/London:20120515T160000
UID:TALK37211AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/37211
DESCRIPTION:In modelling site-specific DNA recombination\, one
is interested in solving certain "tangle equation
s" to characterise some biological processes. If t
he given data consists of "small" 2-bridge knots\
, then the problem admits a very satisfactory solu
tion\, as given by Ernst and Sumners (circa 1990).
However\, there are instances where one has to de
al with connect-sums of 2-bridge knots\, and this
greatly complicates the analysis.\nIn this talk\,
we will explain how tangle equations are solved. T
his is essentially studying a Dehn surgery problem
by taking double branched covers. We will see how
the work of Ernst and Sumners relied on using som
e Dehn surgery theorems (available at the time)\,
and how we can use some more recent machinery to o
btain some results on the connect-sums of 2-bridge
knots case.\nThese turn out to be strong enough t
o characterise the action of a particular protein\
, which we will describe.
LOCATION:MR9
CONTACT:Dr Andras Juhasz
END:VEVENT
END:VCALENDAR