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## October 2021

### Zoe Wyatt, Cambridge – Analysis & PDE Seminar

Virtual and alternative time to be arranged to accommodate time difference Meeting in-person, 12:00 - 1:00 pm in Phillips Hall 228 Title: Coupled wave and Klein-Gordon equations in two and three spatial dimensions Abstract: Semilinear wave equations in three spatial dimensions with wave--wave nonlinearities exhibit interesting and well-studied phenomena: from John's famous blow-up examples, to the null condition of Christodoulou and Klainerman, and more recently to the weak null condition of Lindblad and Rodnianski. The study of coupled semilinear wave…

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