Day convolution and the Hodge filtration on THH

This thesis is divided into two chapters. In the first, given symmetric monoidal occategories C and D, subject to mild hypotheses on D, we define an oc-categorical analog of the Day convolution symmetric monoidal structure on the functor category Fun(C, D). In the second, we develop a Hodge filtration on the topological Hochschild homolgy spectrum of a commutative ring spectrum and describe its elementary properties. Thesis Supervisor: Clark Barwick Title: Cecil and Ida B. Green Career Development Associate Professor

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