Past events
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Logic seminar: Nicolai Kraus
14:00 - 15:00 14 May 2025
Title: Constructive Ordinal Arithmetic Abstract: Cantor's ordinal numbers can be described as an extension of the natural numbers: 0, 1, 2, ..., omega, omega+1, and so on. Although much larger than the natural numbers, they retain the property that any decreasing sequence is finite. This makes them...
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HIMR-sponsored Algebra seminar - Colva Roney-Dougal
13:00 - 14:00 13 May 2025
Title: Asymptotic enumeration of permutation groups Abstract: One of the most elementary, but difficult, questions we can ask about a finite group G is how many subgroups it has. An elementary argument shows that the symmetric group on n points has at least 2^{n^2/16} subgroups. Pyber showed in 1993...
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Dynamical Systems and Analysis Seminar - Phil Rippon & Gwyneth Stallard
13:00 - 15:00 12 May 2025
Talk I. Speaker: Gwyneth Stallard (The Open University) Title: Wandering domains and non-autonomous dynamics Abstract: Complex dynamics concerns the iteration of analytic functions of the complex plane. For each function, the plane is split into two sets: the Fatou set (where the behaviour of the...
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Dr Pablo Rodríguez Mier -- CORNETO: A unified framework for joint network inference from prior knowledge and omics data [ONLINE]
13:00 - 14:00 12 May 2025
Join us for this seminar by Dr Pablo Rodríguez Mier (Heidelberg, Germany) as part of the North West Seminar Series in Mathematical Biology and Data Sciences. More details about the joint series can be found here https://northwestseminars.great-site.net/ . The talk will be hosted via zoom, please contact...
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Logic seminar: David Meretzky
14:00 - 15:00 7 May 2025
Title: Differential Galois theory with new algebraic constants. Abstract: A well-known counterexample due to Seidenberg shows that Picard-Vessiot extensions need not exist for arbitrary ordinary homogeneous linear differential equations over arbitrary differential fields. A positive result from Kolchin's...
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