Thomas Nikolaus is a full Professor at the Fachbereich Mathematik und Informatik of the WWU Münster. He is working on topics in homotopy theory and higher categorial structures motivated from string physics, such as topological T-duality.
Higher categorical structures in geometry – General theory and applications to QFT (slides) PhD thesis (2011)
Algebraic models for higher categories, 2010 (blog discussion, arxiv/1003.1342)
Abstract: We establish a model category structure on algebraic Kan complexes. In fact, we introduce the notion of an algebraic fibrant object in a general model category (obeying certain technical conditions). Based on this construction we propose algebraic Kan complexes as an algebraic model for ∞-groupoids and algebraic quasi-categories as an algebraic model for (∞,1)-categories. (Published as Indag. Math. (N.S.) 21.1- 2 (2011), pp. 52 - 75. )
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T-Duality in K-theory and Elliptic Cohomology, talk at String Geometry Network Meeting, Feb 2014, ESI Vienna (website)
The group completion theorem via localizations of ring spectra, 2017 (pdf)