ULTRA-COMBINATORICS. Applications of ultrafilters in combinatorial number theory, and related topics
timetable:
Fri 25 Jan, 16:30 - 17:10, Aula Dini
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Partition regularity in the rationals
speaker: Ben Barber (Department of Pure Mathematics and Mathematical Statistics, University of Cambridge)abstract: A system of linear equations is partition regular if, whenever the natural numbers are finitely-coloured, there is a monochromatic solution. We can similarly talk about partition regularity over the rational numbers, and if the system is finite then these notions are equivalent. What happens in the infinite case? Joint work with Neil Hindman and Imre Leader.
timetable:
Fri 25 Jan, 16:30 - 17:10, Aula Dini
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