Research lectures, seminars and events
The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but wish to enquire about attending one of the events please contact the organiser or host department.
|January 2018||March 2018|
Events for 6 February 2018
'Hell, Heaven and Hope. A journey through life and the afterlife with Dante', Exhibition curated by Dr Annalisa Cipollone
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The Cohen-Lenstra heuristics, postulated in the early 1980s, say that the sequence of ideal class groups of imaginary quadratic number fields can be modelled as a sequence of random finite abelian groups, where a finite abelian group gets a probability weight that is inversely proportional to the size of its automorphism group. They also propose a model for class groups of real quadratic fields. This was extended in the early 1990s by Cohen-Martinet to much more general families of number fields. I will present very recent joint work with Hendrik Lenstra, in which we are trying to understand the Cohen-Lenstra-Martinet heuristics better. Among other things, this entails disproving them and proposing corrected versions.
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