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UID:7549@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20170516T140000
DTEND;TZID=Europe/Paris:20170516T150000
DTSTAMP:20241120T204404Z
URL:https://www.i2m.univ-amu.fr/evenements/the-signature-function-of-posit
 ive-knots/
SUMMARY:Livio Liechti (Universität Bern ): The signature function of posit
 ive knots
DESCRIPTION:Livio Liechti: In the 60s\, Levine and Tristram introduced the 
 signature function\, a knot invariant with strong connections to the Alexa
 nder polynomial and four-dimensional topology. After an introduction to th
 e signature function focussing on these connections\, we compare the signa
 ture functions of some classes of positive knots. In particular\, we show 
 that the signature function of a positive arborescent Hopf plumbing is mon
 otonic.\n\nhttp://www.math.unibe.ch/ueber_uns/personen/liechti_livio/index
 _ger.html
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 017/05/Livio_Liechti.jpg
CATEGORIES:Séminaire,Dynamique et Topologie
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DTSTART:20170326T030000
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