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External events

2015 - 2016

Talk "Degree of commutativity in infinite groups" (Y. Antolín, Vanderbilt University) Nov 10, 2015 from 11:00 AM to 11:30 AM Texas A&M University, College Station,,
Talk: "Enriched pullbacks and the intersection problem" (J. Delgado, UPC) Nov 11, 2015 from 12:00 PM to 12:30 PM Texas A&M University, College Station,,
Talk: "Normal subgroups of the Lodha-Moore groups" (J. Burillo, UPC) Sep 18, 2015 from 04:00 PM to 05:00 PM CIRM, Luminy (Marseille),
Talk: "Recognizing Z-extensions" (J. Delgado, UPC) Oct 30, 2015 from 11:00 AM to 12:00 PM The Graduate Center (CUNY, NYC),
Talk: "Stallings foldings for Z^m x Fn" (J. Delgado, UPC) Sep 17, 2015 from 05:00 PM to 05:30 PM CIRM, Luminy (Marseille),
Talk: "Stallings graphs and pullbacks for Z^m ×Fn " (J. Delgado, UPC) Nov 20, 2015 from 02:30 PM to 03:30 PM The Graduate Center (CUNY, NYC),
Talk: "The degree of commutativity of an in finite group" (E. Ventura, UPC) Sep 17, 2015 from 09:00 AM to 10:00 AM CIRM, Luminy (Marseille),

2014 - 2015

Talk: "On Algorithmic Recognition of Certain Classes of Groups" (J. Delgado, UPC) Jul 07, 2015 from 04:00 PM to 05:00 PM The Graduate Center (CUNY, NYC),
Talk: Solvability and unsolvability results for certain cyclic extensions (J. Delgado, UPC) Oct 23, 2014 12:00 AM IMUS (Sevilla),

Talk "Degree of commutativity in infinite groups" (Y. Antolín, Vanderbilt University)

In a finitely generated group, we count the numbers of pairs of elements in a ball of radius n which commute, and register the proportion of these among all possible pairs. Taking the limit of these numbers provides us the degree of commutativity of the group. We conjecture that the degree of commutativity is positive if and only if the group is virtually abelian and I will present some results in this direction.

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