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GGT seminar: Links in 3-manifolds which behave like the prime numbers

Event Type
Seminar/Symposium
Sponsor
Groups, Geometry, and Topology Seminar
Location
347 Altgeld Hall
Date
May 8, 2025   11:00 am - 12:00 pm  
Speaker
Nadav Gropper (Haifa / Penn)
Views
51
Originating Calendar
Groups, Geometry, and Topology Calendar

Arithmetic topology, also known as the "knots and primes" analogy, studies connections and analogies between low dimensional topology and number theory. In low dimensional topology, McMullen constructed a sequence of knots linked in a "Chebotarev way", and it may be seen as an analogue of the set of all prime numbers. In my talk, I will outline the above and discuss an ongoing joint work with Jun Ueki and Yi Wang, in which we use this notion to provide a topological version of Nuekirch-Uchida theorem. In other words, we construct a profinite group of a 3-manifold relative to the link, which is the "absolute Galois group" of the manifold. We show that such a group determines the manifold. In our arguments we study analogies of fundamental number theoretic concepts such as Hilbert ramification theory and L-functions for links.

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