COMING SOON! PQDT Open is getting a new home!

ProQuest Open Access Dissertations & Theses will remain freely available as part of a new and enhanced search experience at

Questions? Please refer to this FAQ.

Dissertation/Thesis Abstract

Trees, Prisms and a Quillen Model Structure on Prismatic Sets
by Thrall, Louis, Ph.D., City University of New York, 2013, 93; 3601841
Abstract (Summary)

We define a category which we call the category of prisms, [special characters omitted]. This category interpolates between the simplex category, ▵ and the box category □. The way in which we interpolate these two categories is considering categories with a tensor functor and a cone functor. It turns out that the objects of the category [special characters omitted] are in one to one correspondence with planer rooted trees. Furthermore the morphisms of this category may be defined as certain combinatorial decorations on certain trees. We then show that that the category [special characters omitted] is a test category automatically giving a Quillen model structure on the presheaves on [special characters omitted].

Indexing (document details)
Advisor: Bendersky, Martin
Commitee: Bendersky, Martin, Thompson, Robert, Yanofsky, Noson
School: City University of New York
Department: Mathematics
School Location: United States -- New York
Source: DAI-B 75/02(E), Dissertation Abstracts International
Subjects: Applied Mathematics, Mathematics
Keywords: Category theory, Homotopy theory, Presheaf category, Prismatic sets, Test category
Publication Number: 3601841
ISBN: 978-1-303-53562-8
Copyright © 2021 ProQuest LLC. All rights reserved. Terms and Conditions Privacy Policy Cookie Policy